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  4. Northumberland County

Northumberland County

Ontario

2026-07-22 01:00
AQI (US)
Good
Pollutants
PM2.5
μg/m³
4.3
PM10
μg/m³
4.1
Weather
  • ℃
  • ℉
18℃
91%
21 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • PM2.5
  • PM10
Places included
Cobourg
AQI 25
Port Hope
AQI 25

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Cities Nearby

Cobourg
AQI 25
Millbrook
AQI 28
Newcastle
AQI 35
Peterborough
AQI 30
Quinte West
AQI 28
Norwood
AQI 31
Courtice
AQI 38
Lakefield
AQI 28
Oshawa
AQI 31
Stirling
AQI 28
Caesarea
AQI 33