Buffalo Air Quality in April
Across 2019–2025, Buffalo's April air quality had a median AQI of 42 (Good) over 210 monitored days in the Buffalo-Cheektowaga-Niagara Falls, NY area. 0.0% of April days (0 of 210) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 73.8% of days. The cleanest April on record here was 2024 (median AQI 39, 0 days above 100) and the worst was 2023 (median 46, 0 days above 100, peak AQI 97).
- Good: 81.0%
- Moderate: 19.0%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Extra Protection for Buffalo Homes
Air quality in Buffalo is moderate (AQI 54), 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 Buffalo in April?
Good on a typical day: median AQI 42 across 2019–2025, with 0.0% of April days above AQI 100. Ground-level ozone is the main driver.
- ✓81.0% of April days were Good (AQI 0–50), 19.0% Moderate (51–100).
- ✓0 days of 210 reached AQI 101+; the April peak was 97.
- ✓Best April: 2024; worst April: 2023.
Frequently asked questions
What is the air quality like in Buffalo in April?▾
Across 2019–2025, the median daily AQI in Buffalo in April was 42 (Good). 81.0% of days were Good, 19.0% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is April a good time for outdoor exercise in Buffalo?▾
A typical April day in Buffalo sits in the Good range (median AQI 42), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of April days reached AQI 101+ in 2019–2025.
Which pollutant causes Buffalo's April air quality problems?▾
Ground-level ozone set the daily AQI on 73.8% of April days in Buffalo. The highest April AQI recorded in 2019–2025 was 97 (Moderate), in 2023.
Buffalo April air quality, year by year
Buffalo April air quality by year (Buffalo-Cheektowaga-Niagara Falls, NY, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 30 | 43 | 0 | 61 | O3 |
| 2020 | 30 | 41 | 0 | 47 | O3 |
| 2021 | 30 | 44 | 0 | 87 | O3 |
| 2022 | 30 | 40 | 0 | 61 | O3 |
| 2023worst | 30 | 46 | 0 | 97 | O3 |
| 2024cleanest | 30 | 39 | 0 | 61 | O3 |
| 2025 | 30 | 43 | 0 | 84 | O3 |
What April air means in Buffalo
A typical April day in Buffalo sits in the Good range (median AQI 42), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of April days reached AQI 101+ in 2019–2025.
April's median AQI of 42 is in line with Buffalo's whole-year median of 44, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median April AQI across every EPA metro area (100,677 metro-days, 2019–2025) is 44, so Buffalo runs in line with the national April norm; 0.0% of its April days topped AQI 100 versus 0.7% nationally (about the same).
April is part of Buffalo's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Buffalo
The latest EPA AirNow observation puts Buffalo's AQI at 54 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Buffalo air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Buffalo-Cheektowaga-Niagara Falls, NY), 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.