Air Quality Rankings for West Virginia 2026

West Virginia has 14 cities with EPA air quality data. Brooke, West Virginia has the cleanest air with a 5-year average AQI of 19. Marshall, West Virginia has the highest AQI at 49.

#	City	5yr Avg AQI	Current AQI	Worst Pollutant	Trend	Grade
1	Brooke, West Virginia	19	19	PM10	Stable	B
2	Gilmer, West Virginia	32	37	Ozone	Worsening	B
3	Tucker, West Virginia	35	36	Ozone	Stable	B
4	Harrison, West Virginia	37	39	PM2.5	Improving	B
5	Greenbrier, West Virginia	37	38	Ozone	Improving	B
6	Hancock, West Virginia	37	36	Ozone	Stable	B
7	Marion, West Virginia	38	39	PM2.5	Improving	B
8	Wood, West Virginia	39	41	Ozone	Improving	B
9	Cabell, West Virginia	40	44	Ozone	Stable	B
10	Monongalia, West Virginia	40	42	Ozone	Stable	B
11	Ohio, West Virginia	40	41	Ozone	Improving	B
12	Berkeley, West Virginia	40	44	Ozone	Improving	B
13	Kanawha, West Virginia	42	42	PM2.5	Worsening	C
14	Marshall, West Virginia	49	52	PM2.5	Stable	C

Air quality data for West Virginia is sourced from the EPA Air Quality System (AQS), which monitors outdoor air quality at thousands of stations nationwide.
— EPA Air Quality System

Frequently Asked Questions

Brooke, West Virginia has the best air quality in West Virginia with a 5-year average AQI of 19 and a grade of B.

West Virginia has 14 cities with EPA air quality monitoring data in our database, covering multiple years of AQI measurements.

The Air Quality Index (AQI) measures five major pollutants: ground-level ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide. Lower AQI values indicate cleaner air — 0-50 is "Good," while 150+ is "Unhealthy."

Sources: EPA Air Quality System (AQS)

Cities ranked by 5-year average AQI (lower is better). Grades factor in average AQI, trend direction, unhealthy days, and dominant pollutant.

Cleanest Cities Nationwide →All Air Quality in West Virginia →