Lexington Air Quality in 2025
In 2025, Lexington's air quality (Lexington-Fayette, KY area) had a median daily AQI of 42 (Good) across 365 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 268 were Good, and the year's peak AQI was 100 (Moderate). Fine particulate matter (PM2.5) set the daily AQI on 186 of those days. The cleanest month of 2025 was February (median AQI 34, 0 days above 100) and the worst was September (median 50, 0 days above 100, peak 100).
- Good: 73.4%
- Moderate: 26.6%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Extra Protection for Lexington Homes
Air quality in Lexington is moderate (AQI 53), 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 Lexington's air quality in 2025?
Good on a typical day: median AQI 42, with 0 days above AQI 100 out of 365 monitored — the 1st cleanest of 7 years on record for the area.
- ✓Peak AQI in 2025: 100 (Moderate).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 186 days.
- ✓Cleanest month: February; worst: September.
Frequently asked questions
What was the average AQI in Lexington in 2025?▾
EPA's Air Quality System puts Lexington's (Lexington-Fayette, KY) median daily AQI for 2025 at 42, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 100.
Which month had the worst air quality in Lexington in 2025?▾
The cleanest month of 2025 was February (median AQI 34, 0 days above 100) and the worst was September (median 50, 0 days above 100, peak 100).
Was 2025 a good or bad year for Lexington's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 1st cleanest by days above AQI 100 — the best year on record here. 2025's median of 42 is in line with the area's typical annual median of 44.
Lexington month by month in 2025
Lexington air quality month by month, 2025 (Lexington-Fayette, KY, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 37 | 0 | 76 | PM2.5 |
| Februarycleanest | 28 | 34 | 0 | 57 | PM2.5 |
| March | 31 | 43 | 0 | 63 | O3 |
| April | 30 | 44 | 0 | 64 | O3 |
| May | 31 | 40 | 0 | 61 | O3 |
| June | 30 | 47 | 0 | 76 | O3 |
| July | 31 | 49 | 0 | 75 | O3 |
| August | 31 | 44 | 0 | 62 | O3 |
| Septemberworst | 30 | 50 | 0 | 100 | O3 |
| October | 31 | 36 | 0 | 58 | O3 |
| November | 30 | 36 | 0 | 56 | PM2.5 |
| December | 31 | 42 | 0 | 69 | PM2.5 |
How 2025 compares
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 1st cleanest by days above AQI 100 — the best year on record here.
2025's median of 42 is in line with the area's typical annual median of 44.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Lexington
The latest EPA AirNow observation puts Lexington's AQI at 53 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Lexington air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Lexington-Fayette, KY), 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.