Charleston, WV Air Quality in 2019
In 2019, Charleston's air quality (Charleston, WV area) had a median daily AQI of 44 (Good) across 365 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 262 were Good, and the year's peak AQI was 93 (Moderate). Ground-level ozone set the daily AQI on 201 of those days. The cleanest month of 2019 was November (median AQI 27, 0 days above 100) and the worst was September (median 50, 0 days above 100, peak 64).
- Good: 71.8%
- Moderate: 28.2%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How was Charleston's air quality in 2019?
Good on a typical day: median AQI 44, with 0 days above AQI 100 out of 365 monitored — the 5th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2019: 93 (Moderate).
- ✓Ground-level ozone was the main pollutant on 201 days.
- ✓Cleanest month: November; worst: September.
Frequently asked questions
What was the average AQI in Charleston in 2019?▾
EPA's Air Quality System puts Charleston's (Charleston, WV) median daily AQI for 2019 at 44, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 93.
Which month had the worst air quality in Charleston in 2019?▾
The cleanest month of 2019 was November (median AQI 27, 0 days above 100) and the worst was September (median 50, 0 days above 100, peak 64).
Was 2019 a good or bad year for Charleston's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2019 ranks 5th cleanest by days above AQI 100. 2019's median of 44 is above the area's typical annual median of 41.
Charleston month by month in 2019
Charleston air quality month by month, 2019 (Charleston, WV, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 42 | 0 | 75 | PM2.5 |
| February | 28 | 44 | 0 | 61 | PM2.5 |
| March | 31 | 48 | 0 | 64 | O3 |
| April | 30 | 47 | 0 | 84 | O3 |
| May | 31 | 41 | 0 | 80 | O3 |
| June | 30 | 40 | 0 | 87 | O3 |
| July | 31 | 44 | 0 | 90 | O3 |
| August | 31 | 44 | 0 | 93 | O3 |
| Septemberworst | 30 | 50 | 0 | 64 | O3 |
| October | 31 | 32 | 0 | 67 | O3 |
| Novembercleanest | 30 | 27 | 0 | 56 | O3 |
| December | 31 | 42 | 0 | 58 | PM2.5 |
How 2019 compares
Among the 7 years EPA has published for the area (2019–2025), 2019 ranks 5th cleanest by days above AQI 100.
2019's median of 44 is above the area's typical annual median of 41.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Charleston
The latest EPA AirNow observation puts Charleston's AQI at 32 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Charleston air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Charleston, WV), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.