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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 CONTRIBUTORS
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Pollen
What is the pollen count in Ontario today?
 | Index | Moderate | |
 | Tree pollen | Moderate | |
 | Grass pollen | Moderate | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Ontario?
| Weather | Broken clouds |
| Temperature | 71.6°F |
| Humidity | 66% |
| Wind | 17.3 mp/h |
| Pressure | 30.2 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Marana, Arizona | 61 |
| 2 | Burns Harbor, Indiana | 57 |
| 3 | Detroit, Michigan | 57 |
| 4 | Hammond, Indiana | 57 |
| 5 | Saint Clair, Pennsylvania | 57 |
| 6 | Chicago, Illinois | 56 |
| 7 | Corpus Christi, Texas | 56 |
| 8 | Galveston, Texas | 55 |
| 9 | Michigan City, Indiana | 55 |
| 10 | San Antonio, Texas | 55 |
(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 | Park Avenue West | 38 |
(local time)
SEE WORLD AQI RANKING
US AQI
38
live AQI index
Good
Overview
What is the current air quality in Ontario?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 38 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 9.3µg/m³ | |
!
PM2.5
x1.9
PM2.5 concentration in Ontario is currently 1.9 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 |
|---|---|---|---|---|
| Thursday, Apr 25 | Good 29 AQI US |  | 68° 32° |  11.2 mp/h |
| Friday, Apr 26 | Good 45 AQI US | | 73.4° 53.6° | 20.1 mp/h |
| Saturday, Apr 27 | Good 37 AQI US | | 73.4° 59° | 15.7 mp/h |
| Today | Good 38 AQI US | 70% | 73.4° 59° | 15.7 mp/h |
| Monday, Apr 29 | Moderate 52 AQI US  | 100% | 71.6° 57.2° | 17.9 mp/h |
| Tuesday, Apr 30 | Good 40 AQI US | 100% | 68° 53.6° | 11.2 mp/h |
| Wednesday, May 1 | Good 40 AQI US | 70% | 71.6° 50° | 8.9 mp/h |
| Thursday, May 2 | Moderate 61 AQI US |  | 75.2° 57.2° | 8.9 mp/h |
| Friday, May 3 | Moderate 68 AQI US | 100% | 71.6° 59° | 17.9 mp/h |
| Saturday, May 4 | Good 38 AQI US | 100% | 68° 51.8° | 17.9 mp/h |
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News
The latest air quality news and resources.
Ontario air quality data attribution
1Contributor
- 1 Anonymous contributor
1 station
Anonymous Contributor
1 Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in Ontario?
AQI US, Metric