Charlotte Air Quality in March
Across 2019–2025, Charlotte's March air quality had a median AQI of 51 (Moderate) over 217 monitored days in the Charlotte-Concord-Gastonia, NC-SC area. 0.0% of March days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 55.8% of days. The cleanest March on record here was 2020 (median AQI 46, 0 days above 100) and the worst was 2025 (median 53, 0 days above 100, peak AQI 84).
- Good: 48.4%
- Moderate: 51.6%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How is the air in Charlotte in March?
Moderate on a typical day: median AQI 51 across 2019–2025, with 0.0% of March days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓48.4% of March days were Good (AQI 0–50), 51.6% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the March peak was 100.
- ✓Best March: 2020; worst March: 2025.
Frequently asked questions
What is the air quality like in Charlotte in March?▾
Across 2019–2025, the median daily AQI in Charlotte in March was 51 (Moderate). 48.4% of days were Good, 51.6% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is March a good time for outdoor exercise in Charlotte?▾
A typical March day in Charlotte is Moderate (median AQI 51): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of March days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Charlotte's March air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 55.8% of March days in Charlotte. The highest March AQI recorded in 2019–2025 was 100 (Moderate), in 2025.
Charlotte March air quality, year by year
Charlotte March air quality by year (Charlotte-Concord-Gastonia, NC-SC, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 51 | 0 | 77 | PM2.5 |
| 2020cleanest | 31 | 46 | 0 | 64 | PM2.5 |
| 2021 | 31 | 48 | 0 | 80 | PM2.5 |
| 2022 | 31 | 51 | 0 | 84 | PM2.5 |
| 2023 | 31 | 52 | 0 | 77 | PM2.5 |
| 2024 | 31 | 53 | 0 | 100 | O3 |
| 2025worst | 31 | 53 | 0 | 84 | PM2.5 |
What March air means in Charlotte
A typical March day in Charlotte is Moderate (median AQI 51): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of March days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
March's median AQI of 51 is in line with Charlotte's whole-year median of 52, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median March AQI across every EPA metro area (102,455 metro-days, 2019–2025) is 42, so Charlotte runs above the national March norm; 0.0% of its March days topped AQI 100 versus 0.4% nationally (about the same).
March is part of Charlotte's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Charlotte
The latest EPA AirNow observation puts Charlotte's AQI at 34 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Charlotte air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Charlotte-Concord-Gastonia, NC-SC), 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.