Metro area air quality · 2024

Clarksburg, WV

Median AQI 34 (Good). 80.5% of monitored days rated Good across this metro's EPA monitoring network.

34
Median AQI
80.5%
Good-air days
0
Unhealthy days
66%
Cleaner than US metros

Aggregated from EPA Air Quality System (2024), 113 monitored days. EPA AQS → · NOAA →

Insights: Clarksburg, WV metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 34 over 113 measured days in 2024, which corresponds to a Good band and a Good metro-wide health grade. The monitored-day split lands at 91 Good days (81%), 22 Moderate (19%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 54 while the highest single-day reading hit 60 (Moderate). Metro residents averaged roughly 24.2 clean-air days per 30-day window across the reporting year.

Across the 2020–2024 trend window, good days shifted by -8 and the median AQI moved -1 points, which classifies the multi-year trajectory as stable. 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 Kinston, NC (95.8% good, AQI 34); New Castle, IN (78.1% good, AQI 34); Sioux Falls, SD (81.4% good, AQI 34).

Air Quality Summary

Median AQI

34

Good

Good Days

80.5%

91 of 113 days

Max AQI

60

Moderate

Health Grade

Good

90th pct: 54

AQI Day Breakdown (2024)

Distribution of 113 monitored days across EPA AQI categories.

Good

91

81%

Moderate

22

19%

USG

0

0%

Unhealthy

0

0%

Very Unhealthy

0

0%

Hazardous

0

0%

Health Impact Assessment

Good

The Clarksburg, WV metro area's air quality is rated Good based on 80.5% 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 Clarksburg, WV metro compare?

How Clarksburg, WV compares

Good-day share better than US avg
Clarksburg, WV 80.5%
Kinston, NC 95.8%
US average 70.2%
Median AQI better than US avg
Clarksburg, WV 34
Kinston, NC 34
US average 41
Unhealthy days / yr better than US avg
Clarksburg, WV 0
Kinston, NC 0
US average 1

5-Year Air Quality Trend

Air quality is stable in the Clarksburg, WV metro. Best year: 2020 (99 good days).

Year Good Moderate Unhealthy Median AQI
2020 99 19 0 35
2021 82 33 0 35
2022 93 20 0 34
2023 82 24 1 39
2024 91 22 0 34

Metros with Similar Air Quality

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

Kinston, NC

AQI 34 · 95.8% good

34

New Castle, IN

AQI 34 · 78.1% good

34

Sioux Falls, SD

AQI 34 · 81.4% good

34

St. Marys, PA

AQI 34 · 95.8% good

34

Arkadelphia, AR

AQI 35 · 93.3% good

35

Atlantic City-Hammonton, NJ

AQI 35 · 82.5% good

35

More Air Quality Data

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Worst Air Quality

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All Metro Areas

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Air Quality Guides

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Understanding AQI

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Best & Worst City Air Quality

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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 Clarksburg, WV metro area? ▼
The Clarksburg, WV metro area has a median Air Quality Index (AQI) of 34, rated "Good." 80.5% of monitored days (91 out of 113) had good air quality in 2024.
How many unhealthy air days does Clarksburg, WV have? ▼
In 2024, the Clarksburg, WV metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 60.
Is air quality in Clarksburg, WV getting better or worse? ▼
Air quality in the Clarksburg, WV metro is stable based on 5-year trends (2020-2024). Best year: 2020 with 99 good days. Worst year: 2023 with 82 good days.
What does AQI 34 mean for health? ▼
An AQI of 34 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 Clarksburg, WV? ▼
The 90th percentile AQI for the Clarksburg, WV metro area is 54, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 60 (Moderate).
How does Clarksburg, WV compare to other metro areas? ▼
The Clarksburg, WV metro has 80.5% good air days. Similar metros: Kinston, NC (95.8% good), New Castle, IN (78.1% good), Sioux Falls, SD (81.4% 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