For WeatherReports using the default NwsWeatherProvider, air quality metrics are retrieved for current and forecast conditions,
including values for ozone and particulate matter levels. From this data, an AQI (Air Quality Index) is calculated, which
is used in the WeatherReports’ air quality views.
The NwsWeatherProvider gets this data from a U.S. EPA (Environmental Protection Agency) server, at: www.airnowgateway.org
Installations behind a firewall may need to add a rule (exception) to allow access to this information, in addition to rules
to allow access to NWS servers.