Main Class for EPA AQS Package

Python module to download EPA AQS Data hosted at https://www.epa.gov/aqs

The utility expects user to specify a list of years, a list of EPA Parameter Codes (see https://www.epa.gov/aqs/aqs-code-list) and some instructions how to format output

The data is downloaded from https://aqs.epa.gov/aqsweb/airdata/download_files.html

The tool also adds a column containing a uniquely generated Monitor Key

class AQS(context: Optional[AQSContext] = None)

Main class, describes the whole download job

Creates a new instance :param _sphinx_paramlinks_epa.aqs.AQS.context: An optional AQSContext object, if not specified, then it is constructed from the command line arguments

collect_downloads()

Constructs a list of all download tasks necessary to execute to download all the data defined in the configuration ()

Returns

Nothing

is_downloaded()

Checks if there anything remains to be downloaded or if all files are up to date

Returns

True if everything is up to date, False otherwise

clear()

Removes all previously downloaded data from the local storage :return: Nothing

download()

Downloads all remaining data absent or not up to date) :return: Nothing