Oklahoma City Air Quality in April
Across 2019–2025, Oklahoma City's April air quality had a median AQI of 54 (Moderate) over 210 monitored days in the Oklahoma City, OK area. 1.9% of April days (4 of 210) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 50.5% of days. The cleanest April on record here was 2019 (median AQI 51, 0 days above 100) and the worst was 2025 (median 60, 2 days above 100, peak AQI 108).
- Good: 32.9%
- Moderate: 65.2%
- Unhealthy for Sensitive Groups: 1.9%
- Unhealthy or worse: 0.0%
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
As an Amazon Associate, we earn from qualifying purchases.
How is the air in Oklahoma City in April?
Moderate on a typical day: median AQI 54 across 2019–2025, with 1.9% of April days above AQI 100. Ground-level ozone is the main driver.
- ✓32.9% of April days were Good (AQI 0–50), 65.2% Moderate (51–100).
- ✓4 days of 210 reached AQI 101+; the April peak was 108.
- ✓Best April: 2019; worst April: 2025.
Frequently asked questions
What is the air quality like in Oklahoma City in April?▾
Across 2019–2025, the median daily AQI in Oklahoma City in April was 54 (Moderate). 32.9% of days were Good, 65.2% Moderate, and 1.9% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is April a good time for outdoor exercise in Oklahoma City?▾
A typical April 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 53 of April days (1.9%) 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 April air quality problems?▾
Ground-level ozone set the daily AQI on 50.5% of April days in Oklahoma City. The highest April AQI recorded in 2019–2025 was 108 (Unhealthy for Sensitive Groups), in 2025.
Oklahoma City April air quality, year by year
Oklahoma City April air quality by year (Oklahoma City, OK, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019cleanest | 30 | 51 | 0 | 87 | O3 |
| 2020 | 30 | 56 | 0 | 90 | PM2.5 |
| 2021 | 30 | 59 | 2 | 106 | PM2.5 |
| 2022 | 30 | 54 | 0 | 84 | PM2.5 |
| 2023 | 30 | 53 | 0 | 71 | O3 |
| 2024 | 30 | 54 | 0 | 95 | O3 |
| 2025worst | 30 | 60 | 2 | 108 | O3 |
What April air means in Oklahoma City
A typical April 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 53 of April days (1.9%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
April'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 April AQI across every EPA metro area (100,677 metro-days, 2019–2025) is 44, so Oklahoma City runs above the national April norm; 1.9% of its April days topped AQI 100 versus 0.7% nationally (above average).
April 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.