Outdoor air quality monitoring sensors are present throughout Grand County. A map of the location of these sensors and their data can be found by visiting PurpleAir. See various town sensors listed below. PurpleAir sensors measure airborne particulate matter (PM 2.5). Particulate matter describes solid particles suspended in air; this includes dust, smoke, and other organic and inorganic particles.
To view other air quality metrics such as ozone and PM (2.5 and 10) and air quality forecasting view Grand County on AirNow.
Curious where that smoke is coming from? For daily smoke outlook for Colorado please visit CDPHE Smoke Outlook.