Our government has created a great resource for checking the Air Quality Index. AirNow was created by the EPA, NOAA, CDC and other government agencies, and is a simple information tool, without advertisements. Visit AirNow.gov at any time for local AQI info. And feel free to scroll down for more info on forest fires, AQI webcams and more.
But even better, we now have an AirNow app. This, too, is free and shows no ads! So for the ultimate in convenience, throw this app on your Android or Apple smartphone, so you can check the AQI on the fly.