Oklahoma City Air Quality in December
Across 2019–2025, Oklahoma City's December air quality had a median AQI of 49 (Good) over 217 monitored days in the Oklahoma City, OK area. 0.0% of December days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 85.7% of days. The cleanest December on record here was 2023 (median AQI 42, 0 days above 100) and the worst was 2024 (median 52, 0 days above 100, peak AQI 64).
- Good: 51.2%
- Moderate: 48.8%
- Unhealthy for Sensitive Groups: 0.0%
- 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.
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How is the air in Oklahoma City in December?
Good on a typical day: median AQI 49 across 2019–2025, with 0.0% of December days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓51.2% of December days were Good (AQI 0–50), 48.8% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the December peak was 90.
- ✓Best December: 2023; worst December: 2024.
Frequently asked questions
What is the air quality like in Oklahoma City in December?▾
Across 2019–2025, the median daily AQI in Oklahoma City in December was 49 (Good). 51.2% of days were Good, 48.8% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is December a good time for outdoor exercise in Oklahoma City?▾
A typical December day in Oklahoma City sits in the Good range (median AQI 49), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of December days reached AQI 101+ in 2019–2025.
Which pollutant causes Oklahoma City's December air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 85.7% of December days in Oklahoma City. The highest December AQI recorded in 2019–2025 was 90 (Moderate), in 2024.
Oklahoma City December air quality, year by year
Oklahoma City December 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 | 52 | 0 | 90 | PM2.5 |
| 2020 | 31 | 52 | 0 | 69 | PM2.5 |
| 2021 | 31 | 52 | 0 | 78 | PM2.5 |
| 2022 | 31 | 46 | 0 | 70 | PM2.5 |
| 2023cleanest | 31 | 42 | 0 | 59 | PM2.5 |
| 2024worst | 31 | 52 | 0 | 64 | PM2.5 |
| 2025 | 31 | 43 | 0 | 67 | PM2.5 |
What December air means in Oklahoma City
A typical December day in Oklahoma City sits in the Good range (median AQI 49), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of December days reached AQI 101+ in 2019–2025.
December's median AQI of 49 is below Oklahoma City's whole-year median of 54, making it one of the area's cleaner periods. Nationally, the median December AQI across every EPA metro area (95,590 metro-days, 2019–2025) is 39, so Oklahoma City runs above the national December norm; 0.0% of its December days topped AQI 100 versus 0.7% nationally (about the same).
December is part of Oklahoma City's winter season (December, January, February); the winter 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.