Greensboro vs Durham Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 23, 2026, Durham, NC has cleaner air than Greensboro, NC — AQI 19 (Good) vs 23 (Good), a gap of 4 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. Greensboro's reading is driven by O3 and Durham's by O3.
Greensboro, NC
Good
Durham, NC
Good
Summary
Durham has 4 points better air quality
Durham has an AQI of 19 compared to 23
Reduce Indoor Ozone in Greensboro
Today's main pollutant in Greensboro is ground-level ozone (AQI 23). 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.
Compare activated-carbon purifiers (for gases & ozone):
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5-Day Forecast Comparison
| Day | Greensboro | Durham | Better |
|---|---|---|---|
| Today | AQI 22 | AQI 28 | Greensboro |
| Wed, Sep 23 | AQI 24 | AQI 25 | Greensboro |
| Thu, Sep 24 | AQI 40 | AQI 38 | Durham |
| Fri, Sep 25 | AQI 42 | AQI 38 | Durham |