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aws_client

KMA AWS (Automated Weather Station) API client.

This module provides a client for accessing the Korea Meteorological Administration's AWS (방재기상관측) API for automated weather station observations.

AWS provides real-time weather data from automated weather stations focused on disaster prevention and monitoring, with more stations than ASOS.

AWSClient

Client for KMA AWS API.

The AWS system provides real-time weather observations from automated weather stations for disaster prevention purposes. It typically has more observation points than ASOS and focuses on real-time monitoring.

Source code in python/src/kma_mcp/surface/aws_client.py 
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class AWSClient:
    """Client for KMA AWS API.

    The AWS system provides real-time weather observations from automated weather
    stations for disaster prevention purposes. It typically has more observation
    points than ASOS and focuses on real-time monitoring.
    """

    BASE_URL = 'https://apihub.kma.go.kr/api/typ01/url'
    CGI_BASE_URL = 'https://apihub.kma.go.kr/api/typ01/cgi-bin/url'

    def __init__(self, auth_key: str, timeout: float = 30.0) -> None:
        """Initialize AWS client.

        Args:
            auth_key: KMA API authentication key
            timeout: Request timeout in seconds (default: 30.0)
        """
        self.auth_key = auth_key
        self.timeout = timeout
        self._client = httpx.Client(timeout=timeout)

    def __enter__(self) -> 'AWSClient':
        """Context manager entry."""
        return self

    def __exit__(self, *args: object) -> None:
        """Context manager exit."""
        self.close()

    def close(self) -> None:
        """Close the HTTP client."""
        self._client.close()

    def _make_request(
        self, endpoint: str, params: dict[str, Any], *, use_cgi: bool = False
    ) -> dict[str, Any]:
        """Make HTTP request to AWS API.

        Args:
            endpoint: API endpoint path
            params: Query parameters
            use_cgi: Use CGI base URL instead of regular URL (default: False)

        Returns:
            API response as dictionary

        Raises:
            httpx.HTTPError: If request fails
        """
        params['authKey'] = self.auth_key
        base_url = self.CGI_BASE_URL if use_cgi else self.BASE_URL
        url = f'{base_url}/{endpoint}'
        response = self._client.get(url, params=params)
        response.raise_for_status()
        return response.json()

    def get_minutely_data(
        self,
        tm1: str | datetime | None = None,
        tm2: str | datetime | None = None,
        stn: int | str = 0,
        disp: int = 0,
    ) -> dict[str, Any]:
        """Get AWS minutely observation data (documented endpoint).

        Documented endpoint: nph-aws2_min
        Reference: API_ENDPOINT_Surface.md line 241-252

        Args:
            tm1: Start time in 'YYYYMMDDHHmm' format or datetime object
                 (optional, defaults to tm2 if not provided)
            tm2: End time in 'YYYYMMDDHHmm' format or datetime object
                 (optional, defaults to current time if not provided)
            stn: Station number (0 for all stations)
            disp: Display format:
                  0 = Fixed width format suitable for Fortran (default)
                  1 = Comma-separated format suitable for Excel

        Returns:
            Minutely AWS observation data

        Example:
            >>> client = AWSClient('your_auth_key')
            >>> # Get data for a specific time
            >>> data = client.get_minutely_data(tm2='202302010900')
            >>> # Get data for a period
            >>> data = client.get_minutely_data(tm1='202302010800', tm2='202302010900')
        """
        params: dict[str, Any] = {'stn': str(stn), 'disp': str(disp), 'help': '1'}

        if tm1 is not None:
            if isinstance(tm1, datetime):
                tm1 = tm1.strftime('%Y%m%d%H%M')
            params['tm1'] = tm1

        if tm2 is not None:
            if isinstance(tm2, datetime):
                tm2 = tm2.strftime('%Y%m%d%H%M')
            params['tm2'] = tm2

        return self._make_request('nph-aws2_min', params, use_cgi=True)

    def get_land_surface_temperature(
        self,
        tm: str | datetime | None = None,
        tm1: str | datetime | None = None,
        tm2: str | datetime | None = None,
        stn: int | str = 0,
        disp: int = 0,
    ) -> dict[str, Any]:
        """Get AWS land surface temperature data (documented endpoint).

        Documented endpoint: nph-aws2_min_lst
        Reference: API_ENDPOINT_Surface.md line 254-266

        Args:
            tm: Time in 'YYYYMMDDHHmm' format (optional, defaults to current time)
            tm1: Start time (optional, defaults to tm2)
            tm2: End time (optional, defaults to current time)
            stn: Station number (0 for all stations)
            disp: Display format (0=Fortran, 1=Excel)

        Returns:
            Land surface temperature data

        Example:
            >>> client = AWSClient('your_auth_key')
            >>> data = client.get_land_surface_temperature(tm2='202302010900')
        """
        params: dict[str, Any] = {'stn': str(stn), 'disp': str(disp), 'help': '1'}

        if tm is not None:
            if isinstance(tm, datetime):
                tm = tm.strftime('%Y%m%d%H%M')
            params['tm'] = tm

        if tm1 is not None:
            if isinstance(tm1, datetime):
                tm1 = tm1.strftime('%Y%m%d%H%M')
            params['tm1'] = tm1

        if tm2 is not None:
            if isinstance(tm2, datetime):
                tm2 = tm2.strftime('%Y%m%d%H%M')
            params['tm2'] = tm2

        return self._make_request('nph-aws2_min_lst', params, use_cgi=True)

    def get_cloud_data(
        self,
        tm1: str | datetime | None = None,
        tm2: str | datetime | None = None,
        stn: int | str = 0,
        itv: int | None = None,
        sms: int | None = None,
        disp: int = 0,
    ) -> dict[str, Any]:
        """Get AWS cloud height and amount data (documented endpoint).

        Documented endpoint: nph-aws2_min_cloud
        Reference: API_ENDPOINT_Surface.md line 268-281

        Args:
            tm1: Start time (optional, defaults to tm2)
            tm2: End time (optional, defaults to current time)
            stn: Station number (0 for all stations)
            itv: Time interval in minutes (optional)
            sms: Smoothing flag, 0 or 1 (optional)
            disp: Display format (0=Fortran, 1=Excel)

        Returns:
            Cloud height and amount data

        Example:
            >>> client = AWSClient('your_auth_key')
            >>> data = client.get_cloud_data(tm2='202302010900', itv=10)
        """
        params: dict[str, Any] = {'stn': str(stn), 'disp': str(disp), 'help': '1'}

        if tm1 is not None:
            if isinstance(tm1, datetime):
                tm1 = tm1.strftime('%Y%m%d%H%M')
            params['tm1'] = tm1

        if tm2 is not None:
            if isinstance(tm2, datetime):
                tm2 = tm2.strftime('%Y%m%d%H%M')
            params['tm2'] = tm2

        if itv is not None:
            params['itv'] = str(itv)

        if sms is not None:
            params['sms'] = str(sms)

        return self._make_request('nph-aws2_min_cloud', params, use_cgi=True)

    def get_cloud_average(
        self,
        tm1: str | datetime | None = None,
        tm2: str | datetime | None = None,
        stn: int | str = 0,
        itv: int = 10,
        range_minutes: int = 10,
        disp: int = 0,
    ) -> dict[str, Any]:
        """Get AWS cloud data with period average (documented endpoint).

        Documented endpoint: nph-aws2_min_ca2
        Reference: API_ENDPOINT_Surface.md line 283-297

        Args:
            tm1: Start time (optional, defaults to tm2)
            tm2: End time (optional, defaults to current time)
            stn: Station number (0 for all stations)
            itv: Time interval in minutes (default: 10)
            range_minutes: Accumulation period for average in minutes (default: 10)
            disp: Display format (0=Fortran, 1=Excel)

        Returns:
            Cloud average data for the period

        Example:
            >>> client = AWSClient('your_auth_key')
            >>> data = client.get_cloud_average(tm2='201503221200', itv=10, range_minutes=10)
        """
        params: dict[str, Any] = {
            'stn': str(stn),
            'itv': str(itv),
            'range': str(range_minutes),
            'disp': str(disp),
            'help': '1',
        }

        if tm1 is not None:
            if isinstance(tm1, datetime):
                tm1 = tm1.strftime('%Y%m%d%H%M')
            params['tm1'] = tm1

        if tm2 is not None:
            if isinstance(tm2, datetime):
                tm2 = tm2.strftime('%Y%m%d%H%M')
            params['tm2'] = tm2

        return self._make_request('nph-aws2_min_ca2', params, use_cgi=True)

    def get_cloud_min_max(
        self,
        tm1: str | datetime | None = None,
        tm2: str | datetime | None = None,
        stn: int | str = 0,
        itv: int = 10,
        range_minutes: int = 10,
        disp: int = 0,
    ) -> dict[str, Any]:
        """Get AWS cloud data with period min/max (documented endpoint).

        Documented endpoint: nph-aws2_min_ca3
        Reference: API_ENDPOINT_Surface.md line 299-312

        Args:
            tm1: Start time (optional, defaults to tm2)
            tm2: End time (optional, defaults to current time)
            stn: Station number (0 for all stations)
            itv: Time interval in minutes (default: 10)
            range_minutes: Accumulation period for min/max in minutes (default: 10)
            disp: Display format (0=Fortran, 1=Excel)

        Returns:
            Cloud min/max data for the period

        Example:
            >>> client = AWSClient('your_auth_key')
            >>> data = client.get_cloud_min_max(tm2='201503221200', itv=10, range_minutes=10)
        """
        params: dict[str, Any] = {
            'stn': str(stn),
            'itv': str(itv),
            'range': str(range_minutes),
            'disp': str(disp),
            'help': '1',
        }

        if tm1 is not None:
            if isinstance(tm1, datetime):
                tm1 = tm1.strftime('%Y%m%d%H%M')
            params['tm1'] = tm1

        if tm2 is not None:
            if isinstance(tm2, datetime):
                tm2 = tm2.strftime('%Y%m%d%H%M')
            params['tm2'] = tm2

        return self._make_request('nph-aws2_min_ca3', params, use_cgi=True)

close()

Close the HTTP client.

Source code in python/src/kma_mcp/surface/aws_client.py 
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def close(self) -> None:
    """Close the HTTP client."""
    self._client.close()

get_cloud_average(tm1=None, tm2=None, stn=0, itv=10, range_minutes=10, disp=0)

Get AWS cloud data with period average (documented endpoint).

Documented endpoint: nph-aws2_min_ca2 Reference: API_ENDPOINT_Surface.md line 283-297

Parameters:

  • tm1 (str | datetime | None, default: None ) –

    Start time (optional, defaults to tm2)

  • tm2 (str | datetime | None, default: None ) –

    End time (optional, defaults to current time)

  • stn (int | str, default: 0 ) –

    Station number (0 for all stations)

  • itv (int, default: 10 ) –

    Time interval in minutes (default: 10)

  • range_minutes (int, default: 10 ) –

    Accumulation period for average in minutes (default: 10)

  • disp (int, default: 0 ) –

    Display format (0=Fortran, 1=Excel)

Returns:

  • dict[str, Any] –

    Cloud average data for the period

Example

client = AWSClient('your_auth_key') data = client.get_cloud_average(tm2='201503221200', itv=10, range_minutes=10)

Source code in python/src/kma_mcp/surface/aws_client.py 
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def get_cloud_average(
    self,
    tm1: str | datetime | None = None,
    tm2: str | datetime | None = None,
    stn: int | str = 0,
    itv: int = 10,
    range_minutes: int = 10,
    disp: int = 0,
) -> dict[str, Any]:
    """Get AWS cloud data with period average (documented endpoint).

    Documented endpoint: nph-aws2_min_ca2
    Reference: API_ENDPOINT_Surface.md line 283-297

    Args:
        tm1: Start time (optional, defaults to tm2)
        tm2: End time (optional, defaults to current time)
        stn: Station number (0 for all stations)
        itv: Time interval in minutes (default: 10)
        range_minutes: Accumulation period for average in minutes (default: 10)
        disp: Display format (0=Fortran, 1=Excel)

    Returns:
        Cloud average data for the period

    Example:
        >>> client = AWSClient('your_auth_key')
        >>> data = client.get_cloud_average(tm2='201503221200', itv=10, range_minutes=10)
    """
    params: dict[str, Any] = {
        'stn': str(stn),
        'itv': str(itv),
        'range': str(range_minutes),
        'disp': str(disp),
        'help': '1',
    }

    if tm1 is not None:
        if isinstance(tm1, datetime):
            tm1 = tm1.strftime('%Y%m%d%H%M')
        params['tm1'] = tm1

    if tm2 is not None:
        if isinstance(tm2, datetime):
            tm2 = tm2.strftime('%Y%m%d%H%M')
        params['tm2'] = tm2

    return self._make_request('nph-aws2_min_ca2', params, use_cgi=True)

get_cloud_data(tm1=None, tm2=None, stn=0, itv=None, sms=None, disp=0)

Get AWS cloud height and amount data (documented endpoint).

Documented endpoint: nph-aws2_min_cloud Reference: API_ENDPOINT_Surface.md line 268-281

Parameters:

  • tm1 (str | datetime | None, default: None ) –

    Start time (optional, defaults to tm2)

  • tm2 (str | datetime | None, default: None ) –

    End time (optional, defaults to current time)

  • stn (int | str, default: 0 ) –

    Station number (0 for all stations)

  • itv (int | None, default: None ) –

    Time interval in minutes (optional)

  • sms (int | None, default: None ) –

    Smoothing flag, 0 or 1 (optional)

  • disp (int, default: 0 ) –

    Display format (0=Fortran, 1=Excel)

Returns:

Example

client = AWSClient('your_auth_key') data = client.get_cloud_data(tm2='202302010900', itv=10)

Source code in python/src/kma_mcp/surface/aws_client.py 
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def get_cloud_data(
    self,
    tm1: str | datetime | None = None,
    tm2: str | datetime | None = None,
    stn: int | str = 0,
    itv: int | None = None,
    sms: int | None = None,
    disp: int = 0,
) -> dict[str, Any]:
    """Get AWS cloud height and amount data (documented endpoint).

    Documented endpoint: nph-aws2_min_cloud
    Reference: API_ENDPOINT_Surface.md line 268-281

    Args:
        tm1: Start time (optional, defaults to tm2)
        tm2: End time (optional, defaults to current time)
        stn: Station number (0 for all stations)
        itv: Time interval in minutes (optional)
        sms: Smoothing flag, 0 or 1 (optional)
        disp: Display format (0=Fortran, 1=Excel)

    Returns:
        Cloud height and amount data

    Example:
        >>> client = AWSClient('your_auth_key')
        >>> data = client.get_cloud_data(tm2='202302010900', itv=10)
    """
    params: dict[str, Any] = {'stn': str(stn), 'disp': str(disp), 'help': '1'}

    if tm1 is not None:
        if isinstance(tm1, datetime):
            tm1 = tm1.strftime('%Y%m%d%H%M')
        params['tm1'] = tm1

    if tm2 is not None:
        if isinstance(tm2, datetime):
            tm2 = tm2.strftime('%Y%m%d%H%M')
        params['tm2'] = tm2

    if itv is not None:
        params['itv'] = str(itv)

    if sms is not None:
        params['sms'] = str(sms)

    return self._make_request('nph-aws2_min_cloud', params, use_cgi=True)

get_cloud_min_max(tm1=None, tm2=None, stn=0, itv=10, range_minutes=10, disp=0)

Get AWS cloud data with period min/max (documented endpoint).

Documented endpoint: nph-aws2_min_ca3 Reference: API_ENDPOINT_Surface.md line 299-312

Parameters:

  • tm1 (str | datetime | None, default: None ) –

    Start time (optional, defaults to tm2)

  • tm2 (str | datetime | None, default: None ) –

    End time (optional, defaults to current time)

  • stn (int | str, default: 0 ) –

    Station number (0 for all stations)

  • itv (int, default: 10 ) –

    Time interval in minutes (default: 10)

  • range_minutes (int, default: 10 ) –

    Accumulation period for min/max in minutes (default: 10)

  • disp (int, default: 0 ) –

    Display format (0=Fortran, 1=Excel)

Returns:

  • dict[str, Any] –

    Cloud min/max data for the period

Example

client = AWSClient('your_auth_key') data = client.get_cloud_min_max(tm2='201503221200', itv=10, range_minutes=10)

Source code in python/src/kma_mcp/surface/aws_client.py 
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def get_cloud_min_max(
    self,
    tm1: str | datetime | None = None,
    tm2: str | datetime | None = None,
    stn: int | str = 0,
    itv: int = 10,
    range_minutes: int = 10,
    disp: int = 0,
) -> dict[str, Any]:
    """Get AWS cloud data with period min/max (documented endpoint).

    Documented endpoint: nph-aws2_min_ca3
    Reference: API_ENDPOINT_Surface.md line 299-312

    Args:
        tm1: Start time (optional, defaults to tm2)
        tm2: End time (optional, defaults to current time)
        stn: Station number (0 for all stations)
        itv: Time interval in minutes (default: 10)
        range_minutes: Accumulation period for min/max in minutes (default: 10)
        disp: Display format (0=Fortran, 1=Excel)

    Returns:
        Cloud min/max data for the period

    Example:
        >>> client = AWSClient('your_auth_key')
        >>> data = client.get_cloud_min_max(tm2='201503221200', itv=10, range_minutes=10)
    """
    params: dict[str, Any] = {
        'stn': str(stn),
        'itv': str(itv),
        'range': str(range_minutes),
        'disp': str(disp),
        'help': '1',
    }

    if tm1 is not None:
        if isinstance(tm1, datetime):
            tm1 = tm1.strftime('%Y%m%d%H%M')
        params['tm1'] = tm1

    if tm2 is not None:
        if isinstance(tm2, datetime):
            tm2 = tm2.strftime('%Y%m%d%H%M')
        params['tm2'] = tm2

    return self._make_request('nph-aws2_min_ca3', params, use_cgi=True)

get_land_surface_temperature(tm=None, tm1=None, tm2=None, stn=0, disp=0)

Get AWS land surface temperature data (documented endpoint).

Documented endpoint: nph-aws2_min_lst Reference: API_ENDPOINT_Surface.md line 254-266

Parameters:

  • tm (str | datetime | None, default: None ) –

    Time in 'YYYYMMDDHHmm' format (optional, defaults to current time)

  • tm1 (str | datetime | None, default: None ) –

    Start time (optional, defaults to tm2)

  • tm2 (str | datetime | None, default: None ) –

    End time (optional, defaults to current time)

  • stn (int | str, default: 0 ) –

    Station number (0 for all stations)

  • disp (int, default: 0 ) –

    Display format (0=Fortran, 1=Excel)

Returns:

  • dict[str, Any] –

    Land surface temperature data

Example

client = AWSClient('your_auth_key') data = client.get_land_surface_temperature(tm2='202302010900')

Source code in python/src/kma_mcp/surface/aws_client.py 
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def get_land_surface_temperature(
    self,
    tm: str | datetime | None = None,
    tm1: str | datetime | None = None,
    tm2: str | datetime | None = None,
    stn: int | str = 0,
    disp: int = 0,
) -> dict[str, Any]:
    """Get AWS land surface temperature data (documented endpoint).

    Documented endpoint: nph-aws2_min_lst
    Reference: API_ENDPOINT_Surface.md line 254-266

    Args:
        tm: Time in 'YYYYMMDDHHmm' format (optional, defaults to current time)
        tm1: Start time (optional, defaults to tm2)
        tm2: End time (optional, defaults to current time)
        stn: Station number (0 for all stations)
        disp: Display format (0=Fortran, 1=Excel)

    Returns:
        Land surface temperature data

    Example:
        >>> client = AWSClient('your_auth_key')
        >>> data = client.get_land_surface_temperature(tm2='202302010900')
    """
    params: dict[str, Any] = {'stn': str(stn), 'disp': str(disp), 'help': '1'}

    if tm is not None:
        if isinstance(tm, datetime):
            tm = tm.strftime('%Y%m%d%H%M')
        params['tm'] = tm

    if tm1 is not None:
        if isinstance(tm1, datetime):
            tm1 = tm1.strftime('%Y%m%d%H%M')
        params['tm1'] = tm1

    if tm2 is not None:
        if isinstance(tm2, datetime):
            tm2 = tm2.strftime('%Y%m%d%H%M')
        params['tm2'] = tm2

    return self._make_request('nph-aws2_min_lst', params, use_cgi=True)

get_minutely_data(tm1=None, tm2=None, stn=0, disp=0)

Get AWS minutely observation data (documented endpoint).

Documented endpoint: nph-aws2_min Reference: API_ENDPOINT_Surface.md line 241-252

Parameters:

  • tm1 (str | datetime | None, default: None ) –

    Start time in 'YYYYMMDDHHmm' format or datetime object (optional, defaults to tm2 if not provided)

  • tm2 (str | datetime | None, default: None ) –

    End time in 'YYYYMMDDHHmm' format or datetime object (optional, defaults to current time if not provided)

  • stn (int | str, default: 0 ) –

    Station number (0 for all stations)

  • disp (int, default: 0 ) –

    Display format: 0 = Fixed width format suitable for Fortran (default) 1 = Comma-separated format suitable for Excel

Returns:

  • dict[str, Any] –

    Minutely AWS observation data

Example

client = AWSClient('your_auth_key')

Get data for a specific time

data = client.get_minutely_data(tm2='202302010900')

Get data for a period

data = client.get_minutely_data(tm1='202302010800', tm2='202302010900')

Source code in python/src/kma_mcp/surface/aws_client.py 
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def get_minutely_data(
    self,
    tm1: str | datetime | None = None,
    tm2: str | datetime | None = None,
    stn: int | str = 0,
    disp: int = 0,
) -> dict[str, Any]:
    """Get AWS minutely observation data (documented endpoint).

    Documented endpoint: nph-aws2_min
    Reference: API_ENDPOINT_Surface.md line 241-252

    Args:
        tm1: Start time in 'YYYYMMDDHHmm' format or datetime object
             (optional, defaults to tm2 if not provided)
        tm2: End time in 'YYYYMMDDHHmm' format or datetime object
             (optional, defaults to current time if not provided)
        stn: Station number (0 for all stations)
        disp: Display format:
              0 = Fixed width format suitable for Fortran (default)
              1 = Comma-separated format suitable for Excel

    Returns:
        Minutely AWS observation data

    Example:
        >>> client = AWSClient('your_auth_key')
        >>> # Get data for a specific time
        >>> data = client.get_minutely_data(tm2='202302010900')
        >>> # Get data for a period
        >>> data = client.get_minutely_data(tm1='202302010800', tm2='202302010900')
    """
    params: dict[str, Any] = {'stn': str(stn), 'disp': str(disp), 'help': '1'}

    if tm1 is not None:
        if isinstance(tm1, datetime):
            tm1 = tm1.strftime('%Y%m%d%H%M')
        params['tm1'] = tm1

    if tm2 is not None:
        if isinstance(tm2, datetime):
            tm2 = tm2.strftime('%Y%m%d%H%M')
        params['tm2'] = tm2

    return self._make_request('nph-aws2_min', params, use_cgi=True)