Charleston Median AQI 2024: Historical Air Quality Data
Explore 2024 air quality data for Charleston, including the median AQI, seasonal patterns, pollution trends, and how air quality changed over the year.
Current Air Quality
Air quality is satisfactory, and air pollution poses little or no risk.
Charleston Air Quality in 2024
Historical air quality data for Charleston in 2024 shows how pollution levels have changed over time. Understanding yearly trends helps identify seasonal patterns, the impact of local policies, and long-term air quality improvements or concerns in your area. Check current conditions below for today's AQI reading.
View Current Charleston Air Quality →Charleston 2024 Air Quality Snapshot
Across 2024, Charleston's median AQI was around 54 (Moderate), based on current readings and seasonal patterns for the Charleston reporting area. That means a typical day fell near AQI 54, with the dominant pollutant being ground-level ozone (O3), which is common for the Appalachian region.
How Charleston Air Quality Changed by Season in 2024
Spring (Mar–May): Usually Charleston's cleanest stretch, with AQI near 36. Mild temperatures and better atmospheric mixing keep both ozone and particulates low.
Summer (Jun–Aug): AQI climbs toward 78 as heat and sunlight drive ozone formation to its yearly peak. Afternoons are the worst time to be outside.
Fall (Sep–Nov): Air quality generally improves as temperatures drop, though early fall can still carry wildfire smoke in the Appalachian region.
Winter (Dec–Feb): AQI near 56. Cold-air temperature inversions can trap PM2.5 from heating and vehicles close to the ground, especially on still mornings.
Is It Safe to Exercise Outside in Charleston?
With Charleston's AQI at 50 (Good), outdoor exercise is generally safe for most people. Conditions are good for running, cycling, and outdoor sports at any time of day.
See our running & AQI guide and cycling & AQI guide for activity-specific thresholds.
What's Causing Charleston's Air Pollution?
In Charleston, the leading pollutant is ground-level ozone (O3). As part of the Appalachian region, the main drivers of air pollution here are:
- •Topography that traps pollutants in narrow valleys
- •Legacy industrial and chemical-plant emissions
- •Coal mining and related processing
- •Residential wood-burning in cold mountain winters
Dig deeper: Charleston PM2.5 levels · Charleston ozone levels
Air Purifier & Monitor Buying Guides
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PM2.5 Levels
Fine particulate matter data →
Ozone Levels
Ground-level ozone data →
Seasonal Guides
Air quality by season →
Health Effects
Learn about air pollution impacts →
Frequently Asked Questions About Charleston Air Quality
What is the current air quality in Charleston?
The current Air Quality Index (AQI) in Charleston, WV is 50, which is considered good.
Is it safe to exercise outdoors in Charleston?
Yes, with an AQI of 50, outdoor exercise is safe for everyone in Charleston.
When is the best time of year to visit Charleston for good air quality?
Spring and early fall typically offer the best air quality in Charleston. Summer months may have elevated ozone levels, while winter can see higher PM2.5 from temperature inversions.
What causes air pollution in Charleston?
Air pollution in Charleston can come from vehicle emissions, industrial activity, construction, wildfires, and weather patterns. Local geography and seasonal factors also play a significant role.
Explore More Air Quality Data
Reduce Indoor Ozone in Charleston
Today's main pollutant in Charleston is ground-level ozone (AQI 50). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Compare activated-carbon purifiers (for gases & ozone):
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