python wrapper for AirNow API request air quality data
requires an API key from airnow.gov
how to get an API Key: https://docs.airnowapi.org/faq
api fact sheet https://docs.airnowapi.org/docs/AirNowAPIFactSheet.pdf
RSS data feeds https://docs.airnowapi.org/feeds
file products (after logging in) https://docs.airnowapi.org/files