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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 | Broken clouds |
| Temperature | 60.8°F |
| Humidity | 69% |
| Wind | 3 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Durham, North Carolina | 111 |
| 2 | Chapel Hill, North Carolina | 70 |
| 3 | Lake Arrowhead, California | 66 |
| 4 | Yucaipa, California | 66 |
| 5 | Corpus Christi, Texas | 65 |
| 6 | San Antonio, Texas | 64 |
| 7 | Pahrump, Nevada | 63 |
| 8 | Mecca, California | 61 |
| 9 | Redlands, California | 60 |
| 10 | San Bernardino, California | 59 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
21*
live AQI index
Good
Overview
What is the current air quality in Ontario?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 21* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 5*µg/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 |
|---|---|---|---|---|
| Today | Good 21 AQI US |  60% | 59° 50° |  17.9 mp/h |
| Saturday, May 4 | Good 23 AQI US | 100% | 55.4° 48.2° | 15.7 mp/h |
| Sunday, May 5 | Good 36 AQI US | 80% | 55.4° 48.2° | 8.9 mp/h |
| Monday, May 6 | Moderate 54 AQI US  | 60% | 55.4° 44.6° | 8.9 mp/h |
| Tuesday, May 7 | Good 34 AQI US | 100% | 62.6° 44.6° | 17.9 mp/h |
| Wednesday, May 8 | Good 36 AQI US | 100% | 46.4° 42.8° | 11.2 mp/h |
| Thursday, May 9 | Moderate 55 AQI US | 60% | 46.4° 42.8° | 8.9 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