Canada
Toronto
Good
Air Quality Index
Updated Mar 21, 02:01 AM · Data from OpenAQ
Current Pollution Levels in Toronto
PM2.5
Good4
µg/m³
PM10
N/A—
µg/m³
O₃
—0.019
ppm
Toronto Air Quality 24-Hour Trend
Air Quality Analysis for Toronto
Toronto, Canada air quality this morning is rated Good with an Air Quality Index (AQI) of 17. The primary pollutant PM2.5 is measured at 4 µg/m³.
The current PM2.5 level is within WHO air quality guidelines, indicating relatively clean air conditions in Toronto today.
PM2.5 levels are stable, staying close to the recent average of 4.0 µg/m³.
Health Recommendation
Air quality in Toronto is excellent. All outdoor activities are safe. Perfect conditions for jogging, cycling, and outdoor sports.
Ideal conditions
Recommended
Recent Toronto Air Quality Measurements
| Time | AQI | PM2.5 | PM10 |
|---|---|---|---|
| 02:01 AM | 17 | 4 | — |
| 01:01 AM | 17 | 4 | — |
| 11:23 PM | 17 | 4 | — |
Frequently Asked Questions
Is air quality in Toronto safe today?
Yes, Toronto air quality is currently good with an AQI of 17. Outdoor activities are safe for everyone.
What AQI level is considered unhealthy?
According to EPA standards, AQI 0-50 is Good, 51-100 is Moderate, 101-150 is Unhealthy for Sensitive Groups, 151-200 is Unhealthy, 201-300 is Very Unhealthy, and above 300 is Hazardous. The WHO recommends annual PM2.5 levels below 15 µg/m³ for optimal health.
Should I wear a mask today in Toronto?
With Toronto's current AQI of 17, masks are generally not necessary for most people. However, if you have respiratory conditions, a mask may provide additional comfort.
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