Columbus Air Quality in March
Across 2019–2025, Columbus's March air quality had a median AQI of 48 (Good) over 217 monitored days in the Columbus, OH area. 0.0% of March days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 59.4% of days. The cleanest March on record here was 2020 (median AQI 42, 0 days above 100) and the worst was 2019 (median 54, 0 days above 100, peak AQI 69).
- Good: 57.1%
- Moderate: 42.9%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Extra Protection for Columbus Homes
Air quality in Columbus is moderate (AQI 58), 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 Columbus in March?
Good on a typical day: median AQI 48 across 2019–2025, with 0.0% of March days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓57.1% of March days were Good (AQI 0–50), 42.9% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the March peak was 84.
- ✓Best March: 2020; worst March: 2019.
Frequently asked questions
What is the air quality like in Columbus in March?▾
Across 2019–2025, the median daily AQI in Columbus in March was 48 (Good). 57.1% of days were Good, 42.9% Moderate, and 0.0% 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 Columbus?▾
A typical March day in Columbus sits in the Good range (median AQI 48), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of March days reached AQI 101+ in 2019–2025.
Which pollutant causes Columbus's March air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 59.4% of March days in Columbus. The highest March AQI recorded in 2019–2025 was 84 (Moderate), in 2019.
Columbus March air quality, year by year
Columbus March air quality by year (Columbus, OH, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019worst | 31 | 54 | 0 | 69 | PM2.5 |
| 2020cleanest | 31 | 42 | 0 | 58 | PM2.5 |
| 2021 | 31 | 46 | 0 | 72 | PM2.5 |
| 2022 | 31 | 45 | 0 | 67 | O3 |
| 2023 | 31 | 51 | 0 | 67 | PM2.5 |
| 2024 | 31 | 46 | 0 | 67 | PM2.5 |
| 2025 | 31 | 44 | 0 | 84 | O3 |
What March air means in Columbus
A typical March day in Columbus sits in the Good range (median AQI 48), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of March days reached AQI 101+ in 2019–2025.
March's median AQI of 48 is below Columbus's whole-year median of 53, making it one of the area's cleaner periods. Nationally, the median March AQI across every EPA metro area (102,455 metro-days, 2019–2025) is 42, so Columbus runs above the national March norm; 0.0% of its March days topped AQI 100 versus 0.4% nationally (about the same).
March is part of Columbus's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Columbus
The latest EPA AirNow observation puts Columbus's AQI at 58 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Columbus air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Columbus, OH), 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.