Lexington Air Quality in Spring
Across 2019–2025, Lexington's spring (March–May) air quality had a median AQI of 44 (Good) over 644 monitored days in the Lexington-Fayette, KY area. 0.0% of spring days (0 of 644) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 59.2% of days. The cleanest spring on record here was 2020 (median AQI 42, 0 days above 100) and the worst was 2023 (median 47, 0 days above 100, peak AQI 84).
- Good: 73.0%
- Moderate: 27.0%
- 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 is the air in Lexington in spring?
Good on a typical day: median AQI 44 across 2019–2025, with 0.0% of spring days above AQI 100. Ground-level ozone is the main driver.
- ✓73.0% of spring days were Good (AQI 0–50), 27.0% Moderate (51–100).
- ✓0 days of 644 reached AQI 101+; the spring peak was 84.
- ✓Cleanest month: March; worst month: April.
Frequently asked questions
What is the air quality like in Lexington in spring?▾
Across 2019–2025, the median daily AQI in Lexington in spring was 44 (Good). 73.0% of days were Good, 27.0% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 644 monitored days in EPA's Air Quality System.
Is spring a good time for outdoor exercise in Lexington?▾
A typical spring day in Lexington sits in the Good range (median AQI 44), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of spring days reached AQI 101+ in 2019–2025.
Which pollutant causes Lexington's spring air quality problems?▾
Ground-level ozone set the daily AQI on 59.2% of spring days in Lexington. The highest spring AQI recorded in 2019–2025 was 84 (Moderate), in 2023.
Lexington spring air quality, year by year
Lexington spring air quality by year (Lexington-Fayette, KY, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 92 | 47 | 0 | 71 | O3 |
| 2020cleanest | 92 | 42 | 0 | 68 | O3 |
| 2021 | 92 | 46 | 0 | 77 | PM2.5 |
| 2022 | 92 | 44 | 0 | 67 | O3 |
| 2023worst | 92 | 47 | 0 | 84 | O3 |
| 2024 | 92 | 42 | 0 | 64 | O3 |
| 2025 | 92 | 43 | 0 | 64 | O3 |
What spring air means in Lexington
A typical spring day in Lexington sits in the Good range (median AQI 44), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of spring days reached AQI 101+ in 2019–2025.
Spring's median AQI of 44 is in line with Lexington's whole-year median of 44, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median Spring AQI across every EPA metro area (307,196 metro-days, 2019–2025) is 43, so Lexington runs in line with the national Spring norm; 0.0% of its Spring days topped AQI 100 versus 0.8% nationally (about the same).
Within the season, March is the cleanest month (median AQI 44, 0.0% of days above 100) and April the worst (median 45, 0.0% above 100).
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 season 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.