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Air Quality Ontario

Ottawa Downtown: station information

Friday, October 31, 2025, 2:00 pm

Ottawa Downtown Air Monitoring Station

Photo: Ottawa Downtown Ambient Air Monitoring Site

Map of Ontario with Ottawa Downtown
Station data for Ottawa Downtown
Station information
Station name: Ottawa Downtown
Address: Rideau St./wurtemburg St.
Latitude: 45.434333
Longitude: -75.676
Station type: Urban
Height of air intake: 4 m
Elevation ASL: 68 m
Pollutants measured: O3, PM2.5, NO2
Measured pollutants at Ottawa Downtown
Pollutant Measured 1-hour
concentration
O3 13 ppbOzone [O3]graph
PM2.5 1 µg/m3Fine Particulate Matter [PM2.5]graph
NO2 2.3 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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