Air Quality
Moderate
Water Violations
None
Active Permits
9
Air quality in Larimer County is rated moderate with a median AQI of 54 (274 days measured in 2025). 1 community water system serve the area with a clean compliance record.
Air Quality — Larimer County (2025)i
AQSThe Air Quality Index measures how clean or polluted the air is on a given day. AQI is reported at the county level. A score of 0-50 is considered good; 51-100 is moderate; above 100 may be unhealthy for sensitive groups.
Median AQI
PM2.5 Daysi
37Ozone Daysi
236Drinking Wateri
SDWISPublic water systems registered to serve this area. Community systems (CWS) provide water to residents year-round. Violations indicate a system failed to meet federal drinking water standards.
Community Systemsi
1Active Systemsi
0Recent Violationsi
0