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  4. Northumberland County

Northumberland County

Ontario

2026-04-08 16:00
AQI (US)
Good
Pollutants
O3
μg/m³
84.7
PM2.5
μg/m³
6.1
PM10
μg/m³
23.2
NO2
μg/m³
9.2
Weather
  • ℃
  • ℉
1℃
75%
17 kph
5 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • O3
  • PM2.5
  • PM10
  • NO2
Places included
Cobourg
AQI 37
Port Hope
AQI 37

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Cities Nearby

Cobourg
AQI 37
Millbrook
AQI 23
Newcastle
AQI 37
Peterborough
AQI 37
Quinte West
AQI 17
Norwood
AQI 56
Courtice
AQI 37
Lakefield
AQI 23
Oshawa
AQI 38
Stirling
AQI 17
Caesarea
AQI 49