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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 | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Ontario?
| Weather | Broken clouds |
| Temperature | 55.4°F |
| Humidity | 53% |
| Wind | 10 mp/h |
| Pressure | 30.2 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Fort Worth, Texas | 88 |
| 2 | Lewisville, Texas | 87 |
| 3 | Boerne, Texas | 82 |
| 4 | Denton, Texas | 77 |
| 5 | San Antonio, Texas | 76 |
| 6 | Dallas, Texas | 74 |
| 7 | Georgetown, Texas | 71 |
| 8 | Edmond, Oklahoma | 69 |
| 9 | Hampton, Virginia | 68 |
| 10 | Oklahoma City, Oklahoma | 66 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
20*
live AQI index
Good
Overview
What is the current air quality in Ontario?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 20* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 4.9*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 20 AQI US |  100% | 55.4° 41° |  17.9 mp/h |
| Sunday, Apr 28 | Good 38 AQI US | 100% | 60.8° 51.8° | 13.4 mp/h |
| Monday, Apr 29 | Good 33 AQI US | 100% | 51.8° 41° | 11.2 mp/h |
| Tuesday, Apr 30 | Good 50 AQI US | 100% | 50° 42.8° | 6.7 mp/h |
| Wednesday, May 1 | Good 42 AQI US | | 51.8° 42.8° | 4.5 mp/h |
| Thursday, May 2 | Moderate 69 AQI US  |  | 68° 46.4° | 15.7 mp/h |
| Friday, May 3 | Moderate 67 AQI US | 100% | 69.8° 53.6° | 15.7 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
Where is the cleanest air quality in Ontario?
No locations are available.
AQI US, Metric