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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
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Pollen
What is the pollen count in Ontario today?
 | Index | Low | |
 | Tree pollen | None | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Ontario?
| Weather | Clear sky |
| Temperature | 82.4°F |
| Humidity | 29% |
| Wind | 6.9 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Duluth, Minnesota | 158 |
| 2 | Corpus Christi, Texas | 122 |
| 3 | Hot Springs, South Dakota | 88 |
| 4 | Fontana, California | 82 |
| 5 | San Fernando, California | 79 |
| 6 | Claremont, California | 78 |
| 7 | Glendale, California | 76 |
| 8 | Hollywood, California | 76 |
| 9 | Riverside, California | 75 |
| 10 | La Verne, California | 74 |
(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 | Owyhee Dead Ox Ontario | 25 |
| 2 | Ontario May Roberts Elementary School | 22 |
(local time)
SEE WORLD AQI RANKING
US AQI
24
live AQI index
Good
Overview
What is the current air quality in Ontario?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 24 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 4.4µg/m³ | |
✓
PM2.5 concentration in Ontario air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Ontario?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Ontario air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Thursday, May 9 | Good 17 AQI US | | 77° 48.2° |  4.5 mp/h |
| Friday, May 10 | Good 24 AQI US | | 82.4° 51.8° | 4.5 mp/h |
| Saturday, May 11 | Good 24 AQI US | | 82.4° 55.4° | 8.9 mp/h |
| Today | Good 24 AQI US | | 82.4° 55.4° | 8.9 mp/h |
| Monday, May 13 | Good 14 AQI US | | 78.8° 57.2° | 13.4 mp/h |
| Tuesday, May 14 | Good 14 AQI US | | 73.4° 50° | 11.2 mp/h |
| Wednesday, May 15 | Good 8 AQI US | | 77° 50° | 6.7 mp/h |
| Thursday, May 16 | Good 10 AQI US | | 82.4° 53.6° | 6.7 mp/h |
| Friday, May 17 | Good 14 AQI US | | 82.4° 53.6° | 8.9 mp/h |
| Saturday, May 18 | Good 9 AQI US |  | 66.2° 53.6° | 13.4 mp/h |
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News
The latest air quality news and resources.
How to best protect from air pollution?
Ontario air quality data attribution
3 Data sources
Data validated and calibrated by IQAirWhere is the cleanest air quality in Ontario?
AQI US, Metric