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Air quality in Ontario
Air quality index (AQI) and PM2.5 air pollution in Ontario
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Ontario Air Quality Map
Real-time Ontario air pollution map
AIR QUALITY DATA CONTRIBUTORS
2 Contributors
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Pollen
What is the pollen count in Ontario today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Ontario?
| Weather | Mist |
| Temperature | 71.6°F |
| Humidity | 60% |
| Wind | 5.7 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Channelview, Texas | 88 |
| 2 | San Bernardino, California | 87 |
| 3 | Boerne, Texas | 82 |
| 4 | Pasadena, Texas | 82 |
| 5 | Baytown, Texas | 81 |
| 6 | Fontana, California | 81 |
| 7 | Galena Park, Texas | 81 |
| 8 | San Antonio, Texas | 81 |
| 9 | Yucaipa, California | 79 |
| 10 | Pahrump, Nevada | 77 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Ontario aqi ranking
Real-time Ontario air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Haven Ave | 81 |
| 2 | Ontario-Route 60 Near Road | 66 |
(local time)
SEE WORLD AQI RANKING
US AQI
66
live AQI index
Moderate
Overview
What is the current air quality in Ontario?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 66 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 17.4µg/m³ | |
| NO2 | 18.8µg/m³ | |
!
PM2.5
x3.5
PM2.5 concentration in Ontario is currently 3.5 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Ontario?
 | Sensitive groups should reduce outdoor exercise |
 | Close your windows to avoid dirty outdoor air GET A MONITOR |
 | Sensitive groups should wear a mask outdoors GET A MASK |
 | Sensitive groups should run an air purifier GET AN AIR PURIFIER |
Forecast
Ontario air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, May 29 | Moderate 63 AQI US |  | 82.4° 60.8° |  8.9 mp/h |
| Thursday, May 30 | Moderate 73 AQI US | | 78.8° 60.8° | 8.9 mp/h |
| Friday, May 31 | Moderate 62 AQI US |  | 77° 59° | 8.9 mp/h |
| Today | Moderate 66 AQI US | | 77° 59° | 8.9 mp/h |
| Sunday, Jun 2 | Moderate 65 AQI US |  | 78.8° 59° | 8.9 mp/h |
| Monday, Jun 3 | Moderate 62 AQI US | | 82.4° 60.8° | 8.9 mp/h |
| Tuesday, Jun 4 | Moderate 67 AQI US | | 89.6° 64.4° | 8.9 mp/h |
| Wednesday, Jun 5 | Moderate 76 AQI US | | 89.6° 68° | 8.9 mp/h |
| Thursday, Jun 6 | Moderate 78 AQI US | | 89.6° 68° | 8.9 mp/h |
| Friday, Jun 7 | Moderate 76 AQI US |  20% | 86° 66.2° | 11.2 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Ontario air quality data attribution
2Contributors
- California Air Resources Board (CARB)
1 station
Government Contributor
- 1 Anonymous contributor
1 station
Anonymous Contributor
3 Data sources
Data validated and calibrated by IQAirWhere is the cleanest air quality in Ontario?
AQI US, Metric