Worst air pollution Henry Farm - Toronto, today and tomorrow
Today (30 August): Air quality in Henry Farm is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (O3: 22.2/100).
Tomorrow (31 August 2026): Air quality in Henry Farm is fair. All pollutants stay as today. Pollution peaks around 10:00 AM (O3: 25.2/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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In Henry Farm, Toronto, steady urban traffic and commercial activity are the leading source of particulate matter. Nearby trees help filter some of this load before it settles. Weather is the biggest factor in how daily figures swing. Conditions depend heavily on local wind speed and direction.
Today - 30 August | Pollution peaks at 11:00
AQI:
Fair
22.2/100
PM2.5 (fine particles):
Good
3.7/100
PM10 (coarse particles):
Good
1.5/100
NO2 (nitrogen dioxide):
Good
5.5/100
O3 (ozone):
Fair
22.2/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.0/100
PM1 (ultrafine particles):
Good
2.4/100
Levels show the poorest local air quality during the day
Tomorrow - 31 August | Pollution peaks at 10:00
AQI:
Fair
25.2/100
PM2.5 (fine particles):
Good
5.9/100
PM10 (coarse particles):
Good
2.4/100
NO2 (nitrogen dioxide):
Good
4.7/100
O3 (ozone):
Fair
25.2/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.7/100
PM1 (ultrafine particles):
Good
3.4/100
Other Landmarks in Toronto
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Frequently Asked Questions
Is air quality bad in Henry Farm right now?
On 30 August 2026, overall air quality in Henry Farm is fair. AQI is the main air quality indicator at 22.2/100. Pollution peaks around 11:00 AM (O3: 22.2/100).
Will air quality be worse tomorrow in Henry Farm?
On 31 August 2026, air quality conditions in Henry Farm will be similar to today, with AQI forecast at fair at 25.2/100. Pollution peaks around 10:00 AM (O3: 25.2/100).
When is air pollution at its worst in Henry Farm?
The colder months bring the heaviest particulate levels, as cold air traps emissions at street level.. Summer shifts the concern to ozone, as heat amplifies the reaction with vehicle emissions.. Spring and fall bring the clearest air, with milder temperatures and steadier winds.
Are air quality levels in Henry Farm based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 30 August 2026 at 20:26 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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