Little Rock Air Quality in December
Across 2019–2025, Little Rock's December air quality had a median AQI of 55 (Moderate) over 217 monitored days in the Little Rock-North Little Rock-Conway, AR 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 91.7% of days. The cleanest December on record here was 2022 (median AQI 40, 0 days above 100) and the worst was 2019 (median 61, 0 days above 100, peak AQI 72).
- Good: 38.7%
- Moderate: 61.3%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Extra Protection for Little Rock Homes
Air quality in Little Rock is moderate (AQI 96), 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 Little Rock in December?
Moderate on a typical day: median AQI 55 across 2019–2025, with 0.0% of December days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓38.7% of December days were Good (AQI 0–50), 61.3% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the December peak was 77.
- ✓Best December: 2022; worst December: 2019.
Frequently asked questions
What is the air quality like in Little Rock in December?▾
Across 2019–2025, the median daily AQI in Little Rock in December was 55 (Moderate). 38.7% of days were Good, 61.3% 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 Little Rock?▾
A typical December day in Little Rock is Moderate (median AQI 55): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of December 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 Little Rock's December air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 91.7% of December days in Little Rock. The highest December AQI recorded in 2019–2025 was 77 (Moderate), in 2019.
Little Rock December air quality, year by year
Little Rock December air quality by year (Little Rock-North Little Rock-Conway, AR, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019worst | 31 | 61 | 0 | 72 | PM2.5 |
| 2020 | 31 | 51 | 0 | 76 | PM2.5 |
| 2021 | 31 | 59 | 0 | 75 | PM2.5 |
| 2022cleanest | 31 | 40 | 0 | 58 | PM2.5 |
| 2023 | 31 | 52 | 0 | 69 | PM2.5 |
| 2024 | 31 | 57 | 0 | 77 | PM2.5 |
| 2025 | 31 | 55 | 0 | 71 | PM2.5 |
What December air means in Little Rock
A typical December day in Little Rock is Moderate (median AQI 55): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of December days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
December's median AQI of 55 is in line with Little Rock's whole-year median of 54, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median December AQI across every EPA metro area (95,590 metro-days, 2019–2025) is 39, so Little Rock 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 Little Rock's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Little Rock
The latest EPA AirNow observation puts Little Rock's AQI at 96 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Little Rock air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Little Rock-North Little Rock-Conway, AR), 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.