Metro area air quality · 2024

Fairmont, WV

Median AQI 33 (Good). 76.6% of monitored days rated Good across this metro's EPA monitoring network.

33
Median AQI
76.6%
Good-air days
0
Unhealthy days
56%
Cleaner than US metros

Aggregated from EPA Air Quality System (2024), 111 monitored days. EPA AQS → · NOAA →

Insights: Fairmont, WV metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 33 over 111 measured days in 2024, which corresponds to a Good band and a Good metro-wide health grade. The monitored-day split lands at 85 Good days (77%), 26 Moderate (23%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 53 while the highest single-day reading hit 62 (Moderate). Metro residents averaged roughly 23.0 clean-air days per 30-day window across the reporting year.

Across the 2020–2024 trend window, good days shifted by +28 and the median AQI moved -2 points, which classifies the multi-year trajectory as improving. The metro avoided any Unhealthy-tier days entirely, an outcome that typically reflects favorable wind patterns, lower industrial density, or effective regional emission controls. Metros with comparable AQI profiles include Bangor, ME (90.6% good, AQI 33); Bellingham, WA (92.8% good, AQI 33); Jackson, TN (81.0% good, AQI 33).

Air Quality Summary

Median AQI

33

Good

Good Days

76.6%

85 of 111 days

Max AQI

62

Moderate

Health Grade

Good

90th pct: 53

AQI Day Breakdown (2024)

Distribution of 111 monitored days across EPA AQI categories.

Good

85

77%

Moderate

26

23%

USG

0

0%

Unhealthy

0

0%

Very Unhealthy

0

0%

Hazardous

0

0%

Health Impact Assessment

Good

The Fairmont, WV metro area's air quality is rated Good based on 76.6% good air days. No unhealthy air days were recorded in 2024.

Air quality is generally acceptable. Unusually sensitive people should monitor real-time conditions at AirNow.gov during high-pollution events.

How does the Fairmont, WV metro compare?

How Fairmont, WV compares

Good-day share better than US avg
Fairmont, WV 76.6%
Bangor, ME 90.6%
US average 70.2%
Median AQI better than US avg
Fairmont, WV 33
Bangor, ME 33
US average 41
Unhealthy days / yr better than US avg
Fairmont, WV 0
Bangor, ME 0
US average 1

5-Year Air Quality Trend

Air quality is improving in the Fairmont, WV metro. Best year: 2022 (91 good days).

Year Good Moderate Unhealthy Median AQI
2020 57 17 0 35
2021 61 30 0 40
2022 91 26 0 36
2023 84 33 1 39
2024 85 26 0 33

Metros with Similar Air Quality

Metro areas across the US with a similar median AQI to Fairmont, WV.

Bangor, ME

AQI 33 · 90.6% good

33

Bellingham, WA

AQI 33 · 92.8% good

33

Jackson, TN

AQI 33 · 81.0% good

33

Klamath Falls, OR

AQI 33 · 70.8% good

33

Rockland, ME

AQI 33 · 96.6% good

33

Athens, TN

AQI 32 · 78.9% good

32

More Air Quality Data

Explore EPA air quality rankings and guides across U.S. metros and counties.

Cleanest Metro Areas

U.S. metros ranked by their share of Good air-quality days.

Worst Air Quality

Counties and metros with the most unhealthy air days.

All Metro Areas

Annual AQI by CBSA for every monitored U.S. metro area.

Best and Worst City Air

What drives urban air quality and how metro areas compare.

Air Quality Guides

Learn more about air quality monitoring, pollutants, and health impacts.

Understanding AQI

What each AQI level means and who is most at risk.

Best & Worst City Air Quality

Metro area air quality rankings and what drives urban pollution.

Health Effects of Air Pollution

How PM2.5 and ozone exposure affects respiratory and cardiovascular health.

Frequently Asked Questions

What is the air quality in the Fairmont, WV metro area? ▼
The Fairmont, WV metro area has a median Air Quality Index (AQI) of 33, rated "Good." 76.6% of monitored days (85 out of 111) had good air quality in 2024.
How many unhealthy air days does Fairmont, WV have? ▼
In 2024, the Fairmont, WV metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 62.
Is air quality in Fairmont, WV getting better or worse? ▼
Air quality in the Fairmont, WV metro is improving based on 5-year trends (2020-2024). Best year: 2022 with 91 good days. Worst year: 2020 with 57 good days.
What does AQI 33 mean for health? ▼
An AQI of 33 is "Good", air quality is satisfactory and poses little or no health risk. This is the best category on the EPA's AQI scale.
What is the 90th percentile AQI for Fairmont, WV? ▼
The 90th percentile AQI for the Fairmont, WV metro area is 53, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 62 (Moderate).
How does Fairmont, WV compare to other metro areas? ▼
The Fairmont, WV metro has 76.6% good air days. Similar metros: Bangor, ME (90.6% good), Bellingham, WA (92.8% good), Jackson, TN (81.0% good).

Data Sources

Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset, 2020–2024. The AQS collects ambient air monitoring data from state, local, and tribal monitoring agencies across the United States.

Metrics: Air Quality Index (AQI) is calculated using EPA-standard breakpoints for six criteria pollutants: PM2.5, PM10, Ozone, NO2, CO, and SO2. Median AQI, max AQI, and 90th percentile AQI are computed from daily measurements. Good days percentage reflects days with AQI 0–50.

Coverage: 501 metro areas (Core Based Statistical Areas). Only metros with active monitoring stations are included. Unmonitored areas are not represented.

Read our methodology , how this data is sourced, computed, and verified.

Source: U.S. EPA, AirNow / AQS Air Quality Index readings and pollutant concentrations · 2025