Oklahoma City Air Quality in March
Across 2019–2025, Oklahoma City's March air quality had a median AQI of 54 (Moderate) over 217 monitored days in the Oklahoma City, OK area. 1.4% of March days (3 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 61.3% of days. The cleanest March on record here was 2020 (median AQI 47, 0 days above 100) and the worst was 2022 (median 56, 2 days above 100, peak AQI 108).
- Good: 35.5%
- Moderate: 63.1%
- Unhealthy for Sensitive Groups: 0.9%
- Unhealthy or worse: 0.5%
Extra Protection for Oklahoma City Homes
Air quality in Oklahoma City is moderate (AQI 73), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
Recommended: Coway AP-1512HH Mighty — True HEPA + carbon · CADR ~246 CFM · rooms up to 361 sq ft
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How is the air in Oklahoma City in March?
Moderate on a typical day: median AQI 54 across 2019–2025, with 1.4% of March days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓35.5% of March days were Good (AQI 0–50), 63.1% Moderate (51–100).
- ✓3 days of 217 reached AQI 101+; the March peak was 459.
- ✓Best March: 2020; worst March: 2022.
Frequently asked questions
What is the air quality like in Oklahoma City in March?▾
Across 2019–2025, the median daily AQI in Oklahoma City in March was 54 (Moderate). 35.5% of days were Good, 63.1% Moderate, and 1.4% 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 Oklahoma City?▾
A typical March day in Oklahoma City is Moderate (median AQI 54): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 71 of March days (1.4%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Oklahoma City's March air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 61.3% of March days in Oklahoma City. The highest March AQI recorded in 2019–2025 was 459 (Hazardous), in 2022.
Oklahoma City March air quality, year by year
Oklahoma City March air quality by year (Oklahoma City, OK, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 61 | 0 | 86 | PM2.5 |
| 2020cleanest | 31 | 47 | 0 | 84 | PM2.5 |
| 2021 | 31 | 56 | 0 | 80 | PM2.5 |
| 2022worst | 31 | 56 | 2 | 108 | PM2.5 |
| 2023 | 31 | 54 | 0 | 67 | PM2.5 |
| 2024 | 31 | 52 | 0 | 67 | PM2.5 |
| 2025 | 31 | 51 | 1 | 459 | O3 |
What March air means in Oklahoma City
A typical March day in Oklahoma City is Moderate (median AQI 54): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 71 of March days (1.4%) 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 54 is in line with Oklahoma City's whole-year median of 54, 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 Oklahoma City runs above the national March norm; 1.4% of its March days topped AQI 100 versus 0.4% nationally (about the same).
March is part of Oklahoma City's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Oklahoma City
The latest EPA AirNow observation puts Oklahoma City's AQI at 73 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Oklahoma City air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Oklahoma City, OK), 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.