[NA]Air quality index sites

[Let'sgoflying!]

Are the locations of the AQI stations a secret?
I'd like to know where the Weather app is getting our data from (yes I disagree with what it is saying much of the time; I think we have some of the cleanest air in the country; zip 79734)
I could not find after a decent googling.
Also interested in an average-US AQI map.

 

[flyingron]

Lots of good information on NOAH's site: https://www.weather.gov/sti/stimodeling_airquality