Winston-Salem Air Quality in February
Across 2019–2025, Winston-Salem's February air quality had a median AQI of 47 (Good) over 198 monitored days in the Winston-Salem, NC area. 0.5% of February days (1 of 198) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 99.0% of days. The cleanest February on record here was 2020 (median AQI 41, 0 days above 100) and the worst was 2022 (median 50, 1 day above 100, peak AQI 137).
- Good: 56.6%
- Moderate: 42.9%
- Unhealthy for Sensitive Groups: 0.5%
- Unhealthy or worse: 0.0%
Extra Protection for Winston-Salem Homes
Air quality in Winston-Salem 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.
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How is the air in Winston-Salem in February?
Good on a typical day: median AQI 47 across 2019–2025, with 0.5% of February days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓56.6% of February days were Good (AQI 0–50), 42.9% Moderate (51–100).
- ✓1 day of 198 reached AQI 101+; the February peak was 137.
- ✓Best February: 2020; worst February: 2022.
Frequently asked questions
What is the air quality like in Winston-Salem in February?▾
Across 2019–2025, the median daily AQI in Winston-Salem in February was 47 (Good). 56.6% of days were Good, 42.9% Moderate, and 0.5% reached Unhealthy for Sensitive Groups or worse, based on 198 monitored days in EPA's Air Quality System.
Is February a good time for outdoor exercise in Winston-Salem?▾
A typical February day in Winston-Salem sits in the Good range (median AQI 47), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of February days reached AQI 101+ in 2019–2025.
Which pollutant causes Winston-Salem's February air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 99.0% of February days in Winston-Salem. The highest February AQI recorded in 2019–2025 was 137 (Unhealthy for Sensitive Groups), in 2022.
Winston-Salem February air quality, year by year
Winston-Salem February air quality by year (Winston-Salem, NC, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 28 | 49 | 0 | 78 | PM2.5 |
| 2020cleanest | 29 | 41 | 0 | 71 | PM2.5 |
| 2021 | 28 | 46 | 0 | 70 | PM2.5 |
| 2022worst | 28 | 50 | 1 | 137 | PM2.5 |
| 2023 | 28 | 51 | 0 | 67 | PM2.5 |
| 2024 | 29 | 41 | 0 | 88 | PM2.5 |
| 2025 | 28 | 49 | 0 | 70 | PM2.5 |
What February air means in Winston-Salem
A typical February day in Winston-Salem sits in the Good range (median AQI 47), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of February days reached AQI 101+ in 2019–2025.
February's median AQI of 47 is in line with Winston-Salem's whole-year median of 50, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median February AQI across every EPA metro area (87,428 metro-days, 2019–2025) is 41, so Winston-Salem runs above the national February norm; 0.5% of its February days topped AQI 100 versus 0.4% nationally (about the same).
February is part of Winston-Salem's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Winston-Salem
The latest EPA AirNow observation puts Winston-Salem's AQI at 52 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Winston-Salem air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Winston-Salem, NC), 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.