Little Rock Air Quality in Fall
Across 2019–2025, Little Rock's fall (September–November) air quality had a median AQI of 55 (Moderate) over 637 monitored days in the Little Rock-North Little Rock-Conway, AR area. 0.9% of fall days (6 of 637) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 88.2% of days. The cleanest fall on record here was 2020 (median AQI 52, 0 days above 100) and the worst was 2024 (median 59, 2 days above 100, peak AQI 120).
- Good: 29.2%
- Moderate: 69.9%
- Unhealthy for Sensitive Groups: 0.9%
- 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
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How is the air in Little Rock in fall?
Moderate on a typical day: median AQI 55 across 2019–2025, with 0.9% of fall days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓29.2% of fall days were Good (AQI 0–50), 69.9% Moderate (51–100).
- ✓6 days of 637 reached AQI 101+; the fall peak was 122.
- ✓Cleanest month: November; worst month: September.
Frequently asked questions
What is the air quality like in Little Rock in fall?▾
Across 2019–2025, the median daily AQI in Little Rock in fall was 55 (Moderate). 29.2% of days were Good, 69.9% Moderate, and 0.9% reached Unhealthy for Sensitive Groups or worse, based on 637 monitored days in EPA's Air Quality System.
Is fall a good time for outdoor exercise in Little Rock?▾
A typical fall 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 fall 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 fall air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 88.2% of fall days in Little Rock. The highest fall AQI recorded in 2019–2025 was 122 (Unhealthy for Sensitive Groups), in 2024.
Little Rock fall air quality, year by year
Little Rock fall 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 | 91 | 56 | 0 | 81 | PM2.5 |
| 2020cleanest | 91 | 52 | 0 | 84 | PM2.5 |
| 2021 | 91 | 54 | 1 | 112 | PM2.5 |
| 2022 | 91 | 54 | 0 | 83 | PM2.5 |
| 2023 | 91 | 57 | 1 | 122 | PM2.5 |
| 2024worst | 91 | 59 | 2 | 120 | PM2.5 |
| 2025 | 91 | 58 | 2 | 112 | PM2.5 |
What fall air means in Little Rock
A typical fall 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 fall days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Fall'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 Fall AQI across every EPA metro area (296,275 metro-days, 2019–2025) is 40, so Little Rock runs above the national Fall norm; 0.9% of its Fall days topped AQI 100 versus 1.5% nationally (about the same).
Within the season, November is the cleanest month (median AQI 54, 0.0% of days above 100) and September the worst (median 58, 1.9% 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.