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

Ontario

San Bernardino County, California

2026-06-21 19:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
25
PM2.5
μg/m³
11.4
NO2
μg/m³
18.5
CO
μg/m³
250
Weather
  • ℃
  • ℉
26℃
51%
14 kph
11 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • PM2.5
  • NO2
  • CO
Places included
60 Near Road
AQI 10
Ontario Near Road
AQI 9
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 25
Upland
AQI 25
Chino
AQI 17
Rancho Cucamonga
AQI 25
Claremont
AQI 30
Pomona
AQI 30
San Antonio Heights
AQI 25
Chino Hills
AQI 30
La Verne
AQI 30
Eastvale
AQI 17
San Dimas
AQI 30