1. North America
  2. United States
  3. California
  4. San Bernardino County
  5. Ontario

Ontario

San Bernardino County, California

2026-05-31 10:00
AQI (US)
Moderate
Pollutants|Pollens
PM2.5
μg/m³
11.2
NO2
μg/m³
50.9
PM10
μg/m³
19
CO
μg/m³
500
Weather
  • ℃
  • ℉
14℃
81%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • NO2
  • PM10
  • CO
Places included
60 Near Road
AQI 23
Ontario Near Road
AQI 25
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

Ontario
AQI 55
Upland
AQI 55
Chino
AQI 72
Rancho Cucamonga
AQI 55
Claremont
AQI 31
Pomona
AQI 31
San Antonio Heights
AQI 55
Chino Hills
AQI 31
La Verne
AQI 31
Eastvale
AQI 72
San Dimas
AQI 31