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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 | Very high | |
 | Tree pollen | Low | |
 | Grass pollen | Very high | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Ontario?
| Weather | Broken clouds |
| Temperature | 48.2°F |
| Humidity | 54% |
| Wind | 13.8 mp/h |
| Pressure | 30.1 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Mecca, California | 90 |
| 2 | Pahrump, Nevada | 80 |
| 3 | Maricopa, Arizona | 77 |
| 4 | Corpus Christi, Texas | 74 |
| 5 | Palm Desert, California | 74 |
| 6 | Canton, Ohio | 71 |
| 7 | Westlake, Louisiana | 69 |
| 8 | Claremont, California | 64 |
| 9 | Sulphur, Louisiana | 64 |
| 10 | The Woodlands, Texas | 64 |
(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 | 15 |
| 2 | Ontario May Roberts Elementary School | 13 |
(local time)
SEE WORLD AQI RANKING
US AQI
15
live AQI index
Good
Overview
What is the current air quality in Ontario?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 15 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 2.7µg/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 |
|---|---|---|---|---|
| Friday, May 17 | Good 20 AQI US | | 71.6° 42.8° |  11.2 mp/h |
| Saturday, May 18 | Good 16 AQI US |  | 64.4° 42.8° | 13.4 mp/h |
| Sunday, May 19 | Good 16 AQI US | | 64.4° 42.8° | 17.9 mp/h |
| Today | Good 15 AQI US | | 64.4° 42.8° | 17.9 mp/h |
| Tuesday, May 21 | Good 12 AQI US | | 68° 41° | 6.7 mp/h |
| Wednesday, May 22 | Good 13 AQI US |  70% | 60.8° 48.2° | 22.4 mp/h |
| Thursday, May 23 | Good 6 AQI US | | 64.4° 39.2° | 8.9 mp/h |
| Friday, May 24 | Good 13 AQI US | | 69.8° 42.8° | 11.2 mp/h |
| Saturday, May 25 | Good 18 AQI US | 60% | 62.6° 39.2° | 11.2 mp/h |
| Sunday, May 26 | Good 9 AQI US | | 69.8° 41° | 4.5 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