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  4. Northumberland County

Northumberland County

Ontario

2026-02-17 03:00
AQI (US)
Moderate
Pollutants
PM2.5
μg/m³
25.1
PM10
μg/m³
23.2
O3
μg/m³
47.6
NO2
μg/m³
20.3
Weather
  • ℃
  • ℉
1℃
99%
14 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • PM2.5
  • PM10
  • O3
  • NO2
Places included
Cobourg
AQI 81
Port Hope
AQI 81

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Cities Nearby

Cobourg
AQI 81
Millbrook
AQI 66
Newcastle
AQI 81
Peterborough
AQI 75
Quinte West
AQI 64
Norwood
AQI 69
Courtice
AQI 81
Lakefield
AQI 66
Oshawa
AQI 25
Stirling
AQI 64
Caesarea
AQI 93