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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 SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Ontario today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Ontario?
| Weather | Clear sky |
| Temperature | 64.4°F |
| Humidity | 68% |
| Wind | 0 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Kennewick, Washington | 147 |
| 2 | Corpus Christi, Texas | 129 |
| 3 | Galena Park, Texas | 96 |
| 4 | Indio, California | 92 |
| 5 | Channelview, Texas | 89 |
| 6 | Mecca, California | 86 |
| 7 | Pasadena, Texas | 86 |
| 8 | Houston, Texas | 85 |
| 9 | Yucaipa, California | 85 |
| 10 | Baytown, Texas | 82 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
36*
live AQI index
Good
Overview
What is the current air quality in Ontario?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 36* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 6.6*µg/m³ | |
!
PM2.5
x1.3
PM2.5 concentration in Ontario is currently 1.3 times 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 |
|---|---|---|---|---|
| Today | Good 36 AQI US |  100% | 64.4° 53.6° |  11.2 mp/h |
| Friday, May 17 | Moderate 58 AQI US  | 100% | 60.8° 55.4° | 6.7 mp/h |
| Saturday, May 18 | Moderate 62 AQI US | 30% | 62.6° 53.6° | 6.7 mp/h |
| Sunday, May 19 | Moderate 63 AQI US |  | 66.2° 55.4° | 4.5 mp/h |
| Monday, May 20 | Moderate 56 AQI US | 80% | 69.8° 57.2° | 11.2 mp/h |
| Tuesday, May 21 | Moderate 59 AQI US | 100% | 62.6° 53.6° | 6.7 mp/h |
| Wednesday, May 22 | Moderate 60 AQI US | 100% | 59° 55.4° | 20.1 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in Ontario?
No locations are available.
AQI US, Metric