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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
2 Contributors
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Pollen
What is the pollen count in Ontario today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Ontario?
| Weather | Mist |
| Temperature | 57.2°F |
| Humidity | 86% |
| Wind | 3.4 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Georgetown, Texas | 115 |
| 2 | Round Rock, Texas | 113 |
| 3 | New Braunfels, Texas | 111 |
| 4 | Cedar Park, Texas | 109 |
| 5 | Boerne, Texas | 107 |
| 6 | Austin, Texas | 106 |
| 7 | Leander, Texas | 103 |
| 8 | Dallas, Texas | 97 |
| 9 | Lewisville, Texas | 96 |
| 10 | Marana, Arizona | 94 |
(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 | Ontario-Route 60 Near Road | 77 |
| 2 | Haven Ave | 64 |
(local time)
SEE WORLD AQI RANKING
US AQI
77
live AQI index
Moderate
Overview
What is the current air quality in Ontario?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 77 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 23.3µg/m³ | |
| NO2 | 50.8µg/m³ | |
!
PM2.5
x4.7
PM2.5 concentration in Ontario is currently 4.7 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 |
|---|---|---|---|---|
| Sunday, May 19 | Good 49 AQI US  |  | 69.8° 55.4° |  11.2 mp/h |
| Monday, May 20 | Moderate 55 AQI US |  | 75.2° 55.4° | 8.9 mp/h |
| Tuesday, May 21 | Moderate 61 AQI US | | 77° 57.2° | 11.2 mp/h |
| Today | Moderate 77 AQI US | | 77° 57.2° | 11.2 mp/h |
| Thursday, May 23 | Moderate 56 AQI US | | 75.2° 57.2° | 11.2 mp/h |
| Friday, May 24 | Moderate 52 AQI US | | 69.8° 57.2° | 11.2 mp/h |
| Saturday, May 25 | Good 23 AQI US | | 68° 57.2° | 6.7 mp/h |
| Sunday, May 26 | Good 27 AQI US | | 77° 57.2° | 8.9 mp/h |
| Monday, May 27 | Good 25 AQI US | | 84.2° 60.8° | 8.9 mp/h |
| Tuesday, May 28 | Moderate 54 AQI US | | 86° 62.6° | 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?
Ontario air quality data attribution
2Contributors
- California Air Resources Board (CARB)
1 station
Government Contributor
- 1 Anonymous contributor
1 station
Anonymous Contributor
3 Data sources
Data validated and calibrated by IQAirWhere is the cleanest air quality in Ontario?
AQI US, Metric