panoramic view of chautauqua from the north 


Boulder County works to improve indoor and outdoor air quality through education, monitoring and policy.

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burn permits

Burn Permits

Burn permits are required for open burning of slash in Boulder County. Permits may be denied if a practical alternative method of disposal exists. Learn more about requirements for spring, summer, fall, and winter, as well as alternatives to open burning.

Clean Air Challenge

Clean Air Challenge

The Boulder County Clean Air Challenge is an annual call to leave the car at home at least one day a week and take alternative transportation. Take a bus, bike or walk, work from home.



Mold (or mildew) is the common name for fungi in the indoor environment, although molds are found everywhere in both the indoor and outdoor environment. Learn more about the health effects, prevention, and how to fix the problem.