Greensboro Air Quality in Winter
Across 2019–2025, Greensboro's winter (December–February) air quality had a median AQI of 36 (Good) over 632 monitored days in the Greensboro-High Point, NC 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 93.7% of days. The cleanest winter on record here was 2020 (median AQI 27, 0 days above 100) and the worst was 2022 (median 47, 0 days above 100, peak AQI 69).
- Good: 72.8%
- Moderate: 27.2%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Extra Protection for Greensboro Homes
Air quality in Greensboro 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.
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 Greensboro in winter?
Good on a typical day: median AQI 36 across 2019–2025, with 0.0% of winter days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓72.8% of winter days were Good (AQI 0–50), 27.2% Moderate (51–100).
- ✓0 days of 632 reached AQI 101+; the winter peak was 87.
- ✓Cleanest month: January; worst month: December.
Frequently asked questions
What is the air quality like in Greensboro in winter?▾
Across 2019–2025, the median daily AQI in Greensboro in winter was 36 (Good). 72.8% of days were Good, 27.2% 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 Greensboro?▾
A typical winter day in Greensboro sits in the Good range (median AQI 36), 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 Greensboro's winter air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 93.7% of winter days in Greensboro. The highest winter AQI recorded in 2019–2025 was 87 (Moderate), in 2022.
Greensboro winter air quality, year by year
Greensboro winter air quality by year (Greensboro-High Point, NC, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 90 | 32 | 0 | 87 | PM2.5 |
| 2020cleanest | 91 | 27 | 0 | 64 | PM2.5 |
| 2021 | 90 | 34 | 0 | 61 | PM2.5 |
| 2022worst | 90 | 47 | 0 | 69 | PM2.5 |
| 2023 | 90 | 43 | 0 | 80 | PM2.5 |
| 2024 | 91 | 32 | 0 | 77 | PM2.5 |
| 2025 | 90 | 34 | 0 | 63 | PM2.5 |
What winter air means in Greensboro
A typical winter day in Greensboro sits in the Good range (median AQI 36), 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 36 is below Greensboro's whole-year median of 44, making it one of the area's cleaner periods. Nationally, the median Winter AQI across every EPA metro area (278,620 metro-days, 2019–2025) is 40, so Greensboro runs below the national Winter norm; 0.0% of its Winter days topped AQI 100 versus 0.6% nationally (about the same).
Within the season, January is the cleanest month (median AQI 32, 0.0% of days above 100) and December the worst (median 43, 0.0% above 100).
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Greensboro
The latest EPA AirNow observation puts Greensboro's AQI at 52 (PM2.5). The figures above are multi-year season statistics, not today's reading.
View current Greensboro air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Greensboro-High Point, 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.