Greensboro Air Quality in 2024
In 2024, Greensboro's air quality (Greensboro-High Point, NC area) had a median daily AQI of 45 (Good) across 366 monitored days. 1 day (0.3%) reached Unhealthy for Sensitive Groups or worse, 243 were Good, and the year's peak AQI was 122 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 198 of those days. The cleanest month of 2024 was January (median AQI 27, 0 days above 100) and the worst was August (median 48, 1 day above 100, peak 122).
- Good: 66.4%
- Moderate: 33.3%
- Unhealthy for Sensitive Groups: 0.3%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Greensboro
Today's main pollutant in Greensboro is ground-level ozone (AQI 21). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Recommended: Levoit Core 300 — True HEPA + activated carbon · CADR ~141 CFM · rooms up to 219 sq ft
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How was Greensboro's air quality in 2024?
Good on a typical day: median AQI 45, with 1 day above AQI 100 out of 366 monitored — the 6th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2024: 122 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 198 days.
- ✓Cleanest month: January; worst: August.
Frequently asked questions
What was the average AQI in Greensboro in 2024?▾
EPA's Air Quality System puts Greensboro's (Greensboro-High Point, NC) median daily AQI for 2024 at 45, which is Good. 1 day were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 122.
Which month had the worst air quality in Greensboro in 2024?▾
The cleanest month of 2024 was January (median AQI 27, 0 days above 100) and the worst was August (median 48, 1 day above 100, peak 122).
Was 2024 a good or bad year for Greensboro's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2024 ranks 6th cleanest by days above AQI 100. 2024's median of 45 is in line with the area's typical annual median of 44.
Greensboro month by month in 2024
Greensboro air quality month by month, 2024 (Greensboro-High Point, NC, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| Januarycleanest | 31 | 27 | 0 | 60 | PM2.5 |
| February | 29 | 32 | 0 | 77 | PM2.5 |
| March | 31 | 44 | 0 | 87 | O3 |
| April | 30 | 51 | 0 | 87 | O3 |
| May | 31 | 45 | 0 | 90 | O3 |
| June | 30 | 51 | 0 | 100 | O3 |
| July | 31 | 51 | 0 | 100 | O3 |
| Augustworst | 31 | 48 | 1 | 122 | PM2.5 |
| September | 30 | 40 | 0 | 59 | O3 |
| October | 31 | 45 | 0 | 61 | O3 |
| November | 30 | 39 | 0 | 64 | PM2.5 |
| December | 31 | 46 | 0 | 60 | PM2.5 |
How 2024 compares
Among the 7 years EPA has published for the area (2019–2025), 2024 ranks 6th cleanest by days above AQI 100.
2024's median of 45 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 21 (O3). 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.