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Air Quality Ontario

Thunder Bay: station information

Tuesday, December 2, 2025, 8:00 pm

Thunder Bay Air Monitoring Station

Photo: Thunder Bay Ambient Air Monitoring Site

Map of Ontario with Thunder Bay
Station data for Thunder Bay
Station information
Station name: Thunder Bay
Address: 421 James St. S.
Latitude: 48.379389
Longitude: -89.290167
Station type: Urban
Height of air intake: 15 m
Elevation ASL: 192 m
Pollutants measured: O3, PM2.5, NO2
Measured pollutants at Thunder Bay
Pollutant Measured 1-hour
concentration
O3 27 ppbOzone [O3]graph
PM2.5 15 µg/m3Fine Particulate Matter [PM2.5]graph
NO2 5.7 ppbNitrogen Dioxide [NO2]graph
Ontario 1-hour AAQC for the measured pollutants
Pollutant Ontario
1-hour AAQC
O380 ppb
NO2200 ppb

Note: N/A (not available) denotes invalid or missing data.

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