Charleston, WV Air Quality in June

Across 2019–2025, Charleston's June air quality had a median AQI of 47 (Good) over 210 monitored days in the Charleston, WV area. 0.5% of June days (1 of 210) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 55.2% of days. The cleanest June on record here was 2019 (median AQI 40, 0 days above 100) and the worst was 2023 (median 59, 1 day above 100, peak AQI 153).

47
Median AQI
Good
0.5%
Days above AQI 100
1 of 210 days
69
90th percentile AQI
worst 1 day in 10
153
Peak AQI
Unhealthy
PM2.5
Main pollutant
55.2% of days
57.6%
Good days
121 of 210
  • Good: 57.6%
  • Moderate: 41.9%
  • Unhealthy for Sensitive Groups: 0.0%
  • Unhealthy or worse: 0.5%

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QUICK ANSWER

How is the air in Charleston in June?

Good on a typical day: median AQI 47 across 2019–2025, with 0.5% of June days above AQI 100. Fine particulate matter (PM2.5) is the main driver.

  • 57.6% of June days were Good (AQI 0–50), 41.9% Moderate (51–100).
  • 1 day of 210 reached AQI 101+; the June peak was 153.
  • Best June: 2019; worst June: 2023.

Frequently asked questions

What is the air quality like in Charleston in June?

Across 2019–2025, the median daily AQI in Charleston in June was 47 (Good). 57.6% of days were Good, 41.9% Moderate, and 0.5% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.

Is June a good time for outdoor exercise in Charleston?

A typical June day in Charleston sits in the Good range (median AQI 47), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of June days reached AQI 101+ in 2019–2025.

Which pollutant causes Charleston's June air quality problems?

Fine particulate matter (PM2.5) set the daily AQI on 55.2% of June days in Charleston. The highest June AQI recorded in 2019–2025 was 153 (Unhealthy), in 2023.

Charleston June air quality, year by year

Charleston June air quality by year (Charleston, WV, EPA AQS daily AQI)

YearDays monitoredMedian AQIDays above 100Peak AQIMain pollutant
2019cleanest3040087O3
20203045085O3
20213047087PM2.5
20223058087PM2.5
2023worst30591153PM2.5
20243042067PM2.5
20253045069PM2.5

What June air means in Charleston

A typical June day in Charleston sits in the Good range (median AQI 47), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of June days reached AQI 101+ in 2019–2025.

June's median AQI of 47 is above Charleston's whole-year median of 41, making it one of the area's dirtier periods. Nationally, the median June AQI across every EPA metro area (100,635 metro-days, 2019–2025) is 46, so Charleston runs in line with the national June norm; 0.5% of its June days topped AQI 100 versus 3.7% nationally (below average).

June is part of Charleston's summer season (June, July, August); the summer page pools all three months.

Activity-specific thresholds: running, cycling, kids' sports.

Right now in Charleston

The latest EPA AirNow observation puts Charleston's AQI at 55 (PM2.5). The figures above are multi-year month 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.