Greensboro Air Quality in 2019
In 2019, Greensboro's air quality (Greensboro-High Point, NC area) had a median daily AQI of 44 (Good) across 365 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 242 were Good, and the year's peak AQI was 90 (Moderate). Ground-level ozone set the daily AQI on 186 of those days. The cleanest month of 2019 was January (median AQI 28, 0 days above 100) and the worst was September (median 53, 0 days above 100, peak 84).
- Good: 66.3%
- Moderate: 33.7%
- 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.
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How was Greensboro's air quality in 2019?
Good on a typical day: median AQI 44, with 0 days above AQI 100 out of 365 monitored — the 3rd cleanest of 7 years on record for the area.
- ✓Peak AQI in 2019: 90 (Moderate).
- ✓Ground-level ozone was the main pollutant on 186 days.
- ✓Cleanest month: January; worst: September.
Frequently asked questions
What was the average AQI in Greensboro in 2019?▾
EPA's Air Quality System puts Greensboro's (Greensboro-High Point, NC) median daily AQI for 2019 at 44, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 90.
Which month had the worst air quality in Greensboro in 2019?▾
The cleanest month of 2019 was January (median AQI 28, 0 days above 100) and the worst was September (median 53, 0 days above 100, peak 84).
Was 2019 a good or bad year for Greensboro's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2019 ranks 3rd cleanest by days above AQI 100. 2019's median of 44 is in line with the area's typical annual median of 44.
Greensboro month by month in 2019
Greensboro air quality month by month, 2019 (Greensboro-High Point, NC, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| Januarycleanest | 31 | 28 | 0 | 56 | PM2.5 |
| February | 28 | 30 | 0 | 72 | PM2.5 |
| March | 31 | 46 | 0 | 84 | O3 |
| April | 30 | 46 | 0 | 80 | O3 |
| May | 31 | 46 | 0 | 77 | O3 |
| June | 30 | 48 | 0 | 90 | O3 |
| July | 31 | 49 | 0 | 80 | O3 |
| August | 31 | 49 | 0 | 74 | O3 |
| Septemberworst | 30 | 53 | 0 | 84 | O3 |
| October | 31 | 38 | 0 | 67 | O3 |
| November | 30 | 43 | 0 | 61 | PM2.5 |
| December | 31 | 42 | 0 | 87 | PM2.5 |
How 2019 compares
Among the 7 years EPA has published for the area (2019–2025), 2019 ranks 3rd cleanest by days above AQI 100.
2019's median of 44 is in line with the area's typical annual median of 44.
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 annual 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.