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  4. New Haven County

New Haven County

Connecticut

2026-10-18 06:00
AQI (China)
Excellent
Pollutants|Pollens
NO2
μg/m³
30
O3
μg/m³
25.7
CO
μg/m³
625
PM10
μg/m³
6.1
PM2.5
μg/m³
3.7
SO2
μg/m³
0.9
Weather
  • ℃
  • ℉
1℃
80%
7 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • NO2
  • O3
  • CO
  • PM10
  • PM2.5
  • SO2
Places included
Branford
AQI 5
Derby
AQI 5
East Haven
AQI 5
Guilford
AQI 5
Hamden
AQI 5
Madison
AQI 5
Meriden
AQI 9
Middlebury
AQI 9
Milford
AQI 4
Naugatuck
AQI 9
New Haven
AQI 15
North Haven
AQI 5
Oxford
AQI 9
Waterbury
AQI 9
West Haven
AQI 5
Woodbridge
AQI 5
Data Sources
http://www.airnow.gov/

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Cities Nearby

Branford
AQI 5
East Haven
AQI 5
North Haven
AQI 5
Hamden
AQI 5
New Haven
AQI 15
Guilford
AQI 5
West Haven
AQI 5
Woodbridge
AQI 5
Madison
AQI 5
Clinton
AQI 14
Meriden
AQI 9