Little Rock Air Quality in March
Across 2019–2025, Little Rock's March air quality had a median AQI of 51 (Moderate) over 217 monitored days in the Little Rock-North Little Rock-Conway, AR area. 0.9% of March days (2 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 68.2% of days. The cleanest March on record here was 2020 (median AQI 44, 0 days above 100) and the worst was 2025 (median 53, 1 day above 100, peak AQI 138).
- Good: 47.9%
- Moderate: 51.2%
- 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 March?
Moderate on a typical day: median AQI 51 across 2019–2025, with 0.9% of March days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓47.9% of March days were Good (AQI 0–50), 51.2% Moderate (51–100).
- ✓2 days of 217 reached AQI 101+; the March peak was 138.
- ✓Best March: 2020; worst March: 2025.
Frequently asked questions
What is the air quality like in Little Rock in March?▾
Across 2019–2025, the median daily AQI in Little Rock in March was 51 (Moderate). 47.9% of days were Good, 51.2% Moderate, and 0.9% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is March a good time for outdoor exercise in Little Rock?▾
A typical March day in Little Rock is Moderate (median AQI 51): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of March 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 March air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 68.2% of March days in Little Rock. The highest March AQI recorded in 2019–2025 was 138 (Unhealthy for Sensitive Groups), in 2025.
Little Rock March air quality, year by year
Little Rock March 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 | 31 | 46 | 0 | 74 | O3 |
| 2020cleanest | 31 | 44 | 0 | 67 | PM2.5 |
| 2021 | 31 | 54 | 0 | 100 | PM2.5 |
| 2022 | 31 | 52 | 1 | 115 | PM2.5 |
| 2023 | 31 | 51 | 0 | 74 | PM2.5 |
| 2024 | 31 | 49 | 0 | 66 | PM2.5 |
| 2025worst | 31 | 53 | 1 | 138 | PM2.5 |
What March air means in Little Rock
A typical March day in Little Rock is Moderate (median AQI 51): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of March days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
March's median AQI of 51 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 March AQI across every EPA metro area (102,455 metro-days, 2019–2025) is 42, so Little Rock runs above the national March norm; 0.9% of its March days topped AQI 100 versus 0.4% nationally (about the same).
March is part of Little Rock's spring season (March, April, May); the spring 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.