Little Rock Air Quality in Winter
Across 2019–2025, Little Rock's winter (December–February) air quality had a median AQI of 50 (Good) over 632 monitored days in the Little Rock-North Little Rock-Conway, AR area. 0.0% of winter days (0 of 632) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 86.9% of days. The cleanest winter on record here was 2020 (median AQI 43, 0 days above 100) and the worst was 2025 (median 53, 0 days above 100, peak AQI 81).
- Good: 50.8%
- Moderate: 49.2%
- 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.
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 Little Rock in winter?
Good on a typical day: median AQI 50 across 2019–2025, with 0.0% of winter days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓50.8% of winter days were Good (AQI 0–50), 49.2% Moderate (51–100).
- ✓0 days of 632 reached AQI 101+; the winter peak was 91.
- ✓Cleanest month: January; worst month: December.
Frequently asked questions
What is the air quality like in Little Rock in winter?▾
Across 2019–2025, the median daily AQI in Little Rock in winter was 50 (Good). 50.8% of days were Good, 49.2% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 632 monitored days in EPA's Air Quality System.
Is winter a good time for outdoor exercise in Little Rock?▾
A typical winter day in Little Rock sits in the Good range (median AQI 50), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of winter days reached AQI 101+ in 2019–2025.
Which pollutant causes Little Rock's winter air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 86.9% of winter days in Little Rock. The highest winter AQI recorded in 2019–2025 was 91 (Moderate), in 2025.
Little Rock winter air quality, year by year
Little Rock winter 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 |
|---|---|---|---|---|---|
| 2019 | 90 | 52 | 0 | 72 | PM2.5 |
| 2020cleanest | 91 | 43 | 0 | 76 | PM2.5 |
| 2021 | 90 | 52 | 0 | 75 | PM2.5 |
| 2022 | 90 | 45 | 0 | 67 | PM2.5 |
| 2023 | 90 | 51 | 0 | 91 | PM2.5 |
| 2024 | 91 | 52 | 0 | 87 | PM2.5 |
| 2025worst | 90 | 53 | 0 | 81 | PM2.5 |
What winter air means in Little Rock
A typical winter day in Little Rock sits in the Good range (median AQI 50), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of winter days reached AQI 101+ in 2019–2025.
Winter's median AQI of 50 is below Little Rock's whole-year median of 54, making it one of the area's cleaner periods. Nationally, the median Winter AQI across every EPA metro area (278,620 metro-days, 2019–2025) is 40, so Little Rock runs above the national Winter norm; 0.0% of its Winter days topped AQI 100 versus 0.6% nationally (about the same).
Within the season, January is the cleanest month (median AQI 47, 0.0% of days above 100) and December the worst (median 55, 0.0% above 100).
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 season 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.