Hudson Air Quality

Monitoring Station · Saint-Lazare, Canada
104
Unhealthy for sensitive groups
Sensitive groups should reduce prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
103 5pm
100
95
104 8pm
99
99
99 11pm
99
99
97 2am
97
97
97 5am
97
96
— 8am
—
—
— 11am
—
—
— 2pm
—
—
Station readings
103
100
95
104
CAMS model adj +72
27
27
27
27
27
27
27
27
27
25
25
25
25
25
24

Air Quality Forecast (24h)

PM2.536.8 µg/m³ ×2.5 WHO
Unhealthy for sensitive groups
PM1043.0 µg/m³
Good
View city history →

Nearby Cities

93 Saint-Lazare 67 Vaudreuil-Dorion 95 Les Coteaux 54 Pierrefonds 60 L'Île-Bizard–Sainte-Geneviève 69 Deux-Montagnes 94 Salaberry-de-Valleyfield 99 Mirabel 55 Kirkland

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T20:51 UTC.