Oklahoma City Air Quality in October
Across 2019–2025, Oklahoma City's October air quality had a median AQI of 52 (Moderate) over 217 monitored days in the Oklahoma City, OK area. 2.3% of October days (5 of 217) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 50.2% of days. The cleanest October on record here was 2019 (median AQI 48, 0 days above 100) and the worst was 2024 (median 61, 3 days above 100, peak AQI 147).
- Good: 46.1%
- Moderate: 51.6%
- Unhealthy for Sensitive Groups: 2.3%
- 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
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How is the air in Oklahoma City in October?
Moderate on a typical day: median AQI 52 across 2019–2025, with 2.3% of October days above AQI 100. Ground-level ozone is the main driver.
- ✓46.1% of October days were Good (AQI 0–50), 51.6% Moderate (51–100).
- ✓5 days of 217 reached AQI 101+; the October peak was 147.
- ✓Best October: 2019; worst October: 2024.
Frequently asked questions
What is the air quality like in Oklahoma City in October?▾
Across 2019–2025, the median daily AQI in Oklahoma City in October was 52 (Moderate). 46.1% of days were Good, 51.6% Moderate, and 2.3% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is October a good time for outdoor exercise in Oklahoma City?▾
A typical October day in Oklahoma City is Moderate (median AQI 52): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 43 of October days (2.3%) 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 October air quality problems?▾
Ground-level ozone set the daily AQI on 50.2% of October days in Oklahoma City. The highest October AQI recorded in 2019–2025 was 147 (Unhealthy for Sensitive Groups), in 2024.
Oklahoma City October air quality, year by year
Oklahoma City October air quality by year (Oklahoma City, OK, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019cleanest | 31 | 48 | 0 | 71 | PM2.5 |
| 2020 | 31 | 54 | 0 | 93 | PM2.5 |
| 2021 | 31 | 48 | 0 | 100 | O3 |
| 2022 | 31 | 56 | 1 | 112 | PM2.5 |
| 2023 | 31 | 43 | 1 | 101 | O3 |
| 2024worst | 31 | 61 | 3 | 147 | O3 |
| 2025 | 31 | 51 | 0 | 90 | O3 |
What October air means in Oklahoma City
A typical October day in Oklahoma City is Moderate (median AQI 52): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 43 of October days (2.3%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
October's median AQI of 52 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 October AQI across every EPA metro area (102,872 metro-days, 2019–2025) is 38, so Oklahoma City runs above the national October norm; 2.3% of its October days topped AQI 100 versus 1.3% nationally (about the same).
October is part of Oklahoma City's fall season (September, October, November); the fall 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.