St. Catharines Real-time Air Quality Index (AQI) & Pollution Report - Air Matters

St. Catharines

Niagara Regional Municipality

2026-07-17 11:00

AQI (India)

Very poor

PM2.5

μg/m³

176

NO2

μg/m³

20.5

O3

μg/m³

17.1

Weather

22℃

87%

3 kph

0 of 11

Historical Data

Places included

Saint Catharines

Data Sources

http://www.airnow.gov/

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Cities Nearby

Saint Catharines

Niagara-on-the-Lake