Air Quality
Good
Active Contamination
1
Active Permits
0
Air quality in Fremont County is rated good with a median AQI of 25 (270 days measured in 2025). 1 contamination site are tracked, all with completed or ongoing remediation.
Air Quality — Fremont 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
206Ozone Daysi
0Industrial Monitoringi
Contamination Sitesi
Contaminated sites tracked by the EPA and state agencies. Superfund sites are the most seriously contaminated locations. Brownfields are former industrial properties being cleaned up for reuse. LUST sites have confirmed leaks from underground storage tanks.