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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 | Very high | |
 | Tree pollen | High | |
 | Grass pollen | Very high | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Ontario?
| Weather | Rain |
| Temperature | 75.2°F |
| Humidity | 71% |
| Wind | 17.3 mp/h |
| Pressure | 29.7 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  New Braunfels, Texas | 134 |
| 2 | San Antonio, Texas | 126 |
| 3 | Austin, Texas | 121 |
| 4 | Georgetown, Texas | 121 |
| 5 | Round Rock, Texas | 120 |
| 6 | Boerne, Texas | 109 |
| 7 | Leander, Texas | 106 |
| 8 | Cedar Park, Texas | 97 |
| 9 | Corpus Christi, Texas | 94 |
| 10 | Houston, Texas | 93 |
(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 | 54 |
(local time)
SEE WORLD AQI RANKING
US AQI
54
live AQI index
Moderate
Overview
What is the current air quality in Ontario?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 54 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 11µg/m³ | |
!
PM2.5
x2.2
PM2.5 concentration in Ontario is currently 2.2 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Ontario?
 | Sensitive groups should reduce outdoor exercise |
 | Close your windows to avoid dirty outdoor air GET A MONITOR |
 | Sensitive groups should wear a mask outdoors GET A MASK |
 | Sensitive groups should run an air purifier GET AN AIR PURIFIER |
Forecast
Ontario air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Thursday, May 23 | Good 39 AQI US  |  | 78.8° 57.2° |  6.7 mp/h |
| Friday, May 24 | Good 38 AQI US | | 78.8° 60.8° | 11.2 mp/h |
| Saturday, May 25 | Good 45 AQI US | | 75.2° 57.2° | 15.7 mp/h |
| Today | Moderate 54 AQI US | 100% | 75.2° 57.2° | 15.7 mp/h |
| Monday, May 27 | Moderate 54 AQI US | 100% | 69.8° 57.2° | 17.9 mp/h |
| Tuesday, May 28 | Moderate 53 AQI US | 100% | 64.4° 50° | 17.9 mp/h |
| Wednesday, May 29 | Good 26 AQI US | 70% | 59° 46.4° | 11.2 mp/h |
| Thursday, May 30 | Good 15 AQI US | 50% | 59° 42.8° | 8.9 mp/h |
| Friday, May 31 | Good 16 AQI US | | 62.6° 41° | 8.9 mp/h |
| Saturday, Jun 1 | Good 40 AQI US |  | 69.8° 44.6° | 6.7 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
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