Air Quality in District Of Columbia

District Of Columbia has 1 counties with EPA air quality monitoring. Air quality is stable across the state, with an average of 233 "Good" days per county per year. The best air quality is in District of Columbia (median AQI 45) and the most polluted is District of Columbia (median AQI 45).

County	Median AQI	Max AQI	Good Days	Unhealthy Days	Trend	Top Pollutant
District of Columbia	45	133	233	4	→ stable	Ozone