Français

Air Quality Ontario

St. Catharines: station information

Tuesday, January 20, 2026, 7:00 am

St. Catharines Air Monitoring Station

Photo: St. Catharines Ambient Air Monitoring Site

Map of Ontario with St. Catharines
Station data for St. Catharines
Station information
Station name: St. Catharines
Address: Argyle Cres., Pump Stn.
Latitude: 43.160056
Longitude: -79.23475
Station type: Urban
Height of air intake: 4 m
Elevation ASL: 105 m
Pollutants measured: O3, PM2.5, NO2
Measured pollutants at St. Catharines
Pollutant Measured 1-hour
concentration
O3 30 ppbOzone [O3]graph
PM2.5 4 µg/m3Fine Particulate Matter [PM2.5]graph
NO2 5.9 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.

Disclaimer