Syracuse Air Quality in Winter
Across 2019–2025, Syracuse's winter (December–February) air quality had a median AQI of 37 (Good) over 632 monitored days in the Syracuse, NY area. 0.0% of winter days (0 of 632) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 57.3% of days. The cleanest winter on record here was 2024 (median AQI 33, 0 days above 100) and the worst was 2021 (median 42, 0 days above 100, peak AQI 68).
- Good: 77.7%
- Moderate: 22.3%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Extra Protection for Syracuse Homes
Air quality in Syracuse is moderate (AQI 56), 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 Syracuse in winter?
Good on a typical day: median AQI 37 across 2019–2025, with 0.0% of winter days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓77.7% of winter days were Good (AQI 0–50), 22.3% Moderate (51–100).
- ✓0 days of 632 reached AQI 101+; the winter peak was 74.
- ✓Cleanest month: December; worst month: February.
Frequently asked questions
What is the air quality like in Syracuse in winter?▾
Across 2019–2025, the median daily AQI in Syracuse in winter was 37 (Good). 77.7% of days were Good, 22.3% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 632 monitored days in EPA's Air Quality System.
Is winter a good time for outdoor exercise in Syracuse?▾
A typical winter day in Syracuse sits in the Good range (median AQI 37), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of winter days reached AQI 101+ in 2019–2025.
Which pollutant causes Syracuse's winter air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 57.3% of winter days in Syracuse. The highest winter AQI recorded in 2019–2025 was 74 (Moderate), in 2021.
Syracuse winter air quality, year by year
Syracuse winter air quality by year (Syracuse, NY, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 90 | 39 | 0 | 70 | PM2.5 |
| 2020 | 91 | 38 | 0 | 74 | PM2.5 |
| 2021worst | 90 | 42 | 0 | 68 | PM2.5 |
| 2022 | 90 | 40 | 0 | 62 | PM2.5 |
| 2023 | 90 | 38 | 0 | 63 | PM2.5 |
| 2024cleanest | 91 | 33 | 0 | 61 | PM2.5 |
| 2025 | 90 | 35 | 0 | 63 | O3 |
What winter air means in Syracuse
A typical winter day in Syracuse sits in the Good range (median AQI 37), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of winter days reached AQI 101+ in 2019–2025.
Winter's median AQI of 37 is in line with Syracuse's whole-year median of 38, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median Winter AQI across every EPA metro area (278,620 metro-days, 2019–2025) is 40, so Syracuse runs in line with the national Winter norm; 0.0% of its Winter days topped AQI 100 versus 0.6% nationally (about the same).
Within the season, December is the cleanest month (median AQI 34, 0.0% of days above 100) and February the worst (median 40, 0.0% above 100).
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Syracuse
The latest EPA AirNow observation puts Syracuse's AQI at 56 (PM2.5). The figures above are multi-year season statistics, not today's reading.
View current Syracuse air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Syracuse, 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.