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

Saint Catharines

St. Catharines, Niagara Regional Municipality

2026-07-17 13:00
AQI (India)
Moderately polluted
Pollutants
PM2.5
μg/m³
85
O3
μg/m³
68.6
NO2
μg/m³
10.3
Weather
  • ℃
  • ℉
25℃
70%
4 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • PM2.5
  • O3
  • NO2
Places included
St. Catharines
AQI 184
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 184
Thorold
AQI 184
Niagara Falls
AQI 184
Lewiston
AQI 184
Niagara-on-the-Lake
AQI 184
Niagara Falls
AQI 184
Welland
AQI 184
Youngstown
AQI 184
Lincoln
AQI 184
Ransomville
AQI 184
Port Colborne
AQI 241