Low Air Quality has Returned! Follow this Real-Time Boulder Air Quality Tracker
PurpleAir has an air quality tracker that shows the impact across the state, and shows Boulder is suffering from a Particle Matter (PM) Pollution over 100, which also gives this warning:
“101-150: Members of sensitive groups may experience health effects if they are exposed for 24 hours. The general public is not likely to be affected.”
You can see the air quality tracker HERE.