Columbia Air Quality in 2025
In 2025, Columbia's air quality (Columbia, SC area) had a median daily AQI of 47 (Good) across 365 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 212 were Good, and the year's peak AQI was 89 (Moderate). Fine particulate matter (PM2.5) set the daily AQI on 223 of those days. The cleanest month of 2025 was October (median AQI 38, 0 days above 100) and the worst was November (median 54, 0 days above 100, peak 76).
- Good: 58.1%
- Moderate: 41.9%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Extra Protection for Columbia Homes
Air quality in Columbia is moderate (AQI 52), 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 was Columbia's air quality in 2025?
Good on a typical day: median AQI 47, with 0 days above AQI 100 out of 365 monitored — the 3rd cleanest of 7 years on record for the area.
- ✓Peak AQI in 2025: 89 (Moderate).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 223 days.
- ✓Cleanest month: October; worst: November.
Frequently asked questions
What was the average AQI in Columbia in 2025?▾
EPA's Air Quality System puts Columbia's (Columbia, SC) median daily AQI for 2025 at 47, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 89.
Which month had the worst air quality in Columbia in 2025?▾
The cleanest month of 2025 was October (median AQI 38, 0 days above 100) and the worst was November (median 54, 0 days above 100, peak 76).
Was 2025 a good or bad year for Columbia's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 3rd cleanest by days above AQI 100. 2025's median of 47 is in line with the area's typical annual median of 47.
Columbia month by month in 2025
Columbia air quality month by month, 2025 (Columbia, SC, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 41 | 0 | 61 | PM2.5 |
| February | 28 | 49 | 0 | 69 | PM2.5 |
| March | 31 | 48 | 0 | 83 | O3 |
| April | 30 | 48 | 0 | 77 | PM2.5 |
| May | 31 | 50 | 0 | 60 | PM2.5 |
| June | 30 | 50 | 0 | 77 | PM2.5 |
| July | 31 | 47 | 0 | 59 | PM2.5 |
| August | 31 | 42 | 0 | 67 | PM2.5 |
| September | 30 | 50 | 0 | 58 | PM2.5 |
| Octobercleanest | 31 | 38 | 0 | 54 | O3 |
| Novemberworst | 30 | 54 | 0 | 76 | PM2.5 |
| December | 31 | 53 | 0 | 89 | PM2.5 |
How 2025 compares
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 3rd cleanest by days above AQI 100.
2025's median of 47 is in line with the area's typical annual median of 47.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Columbia
The latest EPA AirNow observation puts Columbia's AQI at 52 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Columbia air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Columbia, SC), 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.