Stage 1 Fire Restrictions are in effect for all of unincorporated Boulder County.

aspen trees and clear sky

Air Quality

Boulder County works to improve indoor and outdoor air quality through education, monitoring, and policy.
Sign Up for Air Quality Alerts
ditch burning on a farm

Burn Permits

Burn permits are required for the open burning of slash in Boulder County. Permits may be denied if there is a different way to dispose of slash. Learn more about what to do in spring, summer, fall, and winter, as well as other options than open burning.

Portrait of loving family on carpet

Radon

Radon is a natural gas that you can’t see or smell, and it can cause cancer. Radon enters buildings through the cracks and pipes of a house’s foundation. Learn how to test your home for radon and what to do if the test comes back positive.

mold

Mold

Mold (or mildew) is the common name for fungi that grow on damp, decaying items. Mold is found both indoors and outdoors. Learn more about the health effects, how to prevent mold, and how to fix the problem.