Current air quality is provided below the AQI forecast section.
AQI Forecast
Forecast for Friday, 09/05/25
Good to Moderate
For local forecasts, see table below.
Air Quality Index
The U. S. Environmental Protection Agency (EPA) has provided a scale called the Air Quality Index (AQI) for rating air quality. This scale is based on the National Ambient Air Quality Standards (NAAQS). The AQI forecast is updated once daily, excluding weekends and holidays. Alternatively, you may call the Air Quality Index Hotline at (800) 249-1234 or (860) 424-4167 for the forecast or link to Airnow.gov for the most current air quality information.
Current air quality is provided below the AQI forecast section.
Current Air Quality
Air Quality for Friday, 09/05/25
Good
For current conditions, see map below.
Cautionary StatementsAIRNOW Interactive Map of Air Quality
For more information, visit the AIRNow Interactive Map of Air Quality website.
Local AQI Forecast
| Town | Friday, 09/05/25 FineParticles (PM2.5) |
Friday, 09/05/25 Ozone (O3) |
Saturday, 09/06/25 FineParticles (PM2.5) |
Saturday, 09/06/25 Ozone (O3) |
|---|---|---|---|---|
| Bridgeport | 44 | 61 | ||
| Danbury | 39 | 64 | ||
| Greenwich | 44 | 58 | ||
| Hartford | 44 | 64 | ||
| Madison | 22 | 45 | ||
| Middletown | 44 | 67 | ||
| New Haven | 33 | 54 | ||
| New London-Groton | 22 | 45 | ||
| Stafford | 39 | 44 | ||
| Stratford | 44 | 61 | ||
| Torrington | 39 | 67 | ||
| Waterbury | 33 | 67 | ||
| Westport | 44 | 61 |