- Visit AirNow.gov to learn more about our local air quality today.
- Learn how the Air Quality Index (AQI) works.
- Download the AirNow mobile app.
- View current atmospheric chemical conditions at the Boulder Reservoir.
- Sign up for Colorado Department of Public Health and Environment air quality email alerts.
- Check out the widget below to see local air quality stats at a glance.
Holiday Closures
All City of Boulder administrative facilities and Age Well Centers will be closed Thursday, July 4, for the Independence Day holiday. Some facilities and services will remain open.