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  4. Northumberland County

Northumberland County

Ontario

2026-07-21 05:00
AQI (US)
Moderate
Pollutants
PM2.5
μg/m³
12.3
PM10
μg/m³
13
Weather
  • ℃
  • ℉
17℃
81%
11 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • PM2.5
  • PM10
Places included
Cobourg
AQI 58
Port Hope
AQI 59

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Cities Nearby

Cobourg
AQI 58
Millbrook
AQI 45
Newcastle
AQI 77
Peterborough
AQI 45
Quinte West
AQI 54
Norwood
AQI 52
Courtice
AQI 85
Lakefield
AQI 45
Oshawa
AQI 38
Stirling
AQI 54
Caesarea
AQI 84