1. North America
  2. Canada
  3. Ontario
  4. Niagara Regional Municipality
  6. Saint Catharines

Saint Catharines

St. Catharines, Niagara Regional Municipality

2026-07-17 10:00
AQI (India)
Very poor
Pollutants
PM2.5
μg/m³
187
NO2
μg/m³
22.6
O3
μg/m³
10.7
Weather
  • ℃
  • ℉
19℃
90%
3 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • PM2.5
  • NO2
  • O3
Places included
St. Catharines
AQI 352
Data Sources
http://www.airnow.gov/

Get the App

Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.

iPhone, iPad

Android

Cities Nearby

Saint Catharines
AQI 352
Thorold
AQI 352
Niagara Falls
AQI 352
Lewiston
AQI 352
Niagara-on-the-Lake
AQI 352
Niagara Falls
AQI 352
Welland
AQI 352
Youngstown
AQI 352
Lincoln
AQI 352
Ransomville
AQI 352
Port Colborne
AQI 311