Worst air pollution Whitchurch-Stouffville, today and tomorrow
Today (9 August): Air quality in Whitchurch-Stouffville is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (O3: 38.2/100).
Tomorrow (10 August 2026): Air quality in Whitchurch-Stouffville is fair. All pollutants stay as today. Pollution peaks around 12:00 PM (O3: 33.1/100). Airmine updates local air quality forecasts four times daily.
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In Whitchurch-Stouffville, light traffic and open farmland nearby mean seasonal dust and burning outweigh congestion as a pollution source here. Green space in the area offers some natural filtering, softening the local particulate load somewhat. Day-to-day readings still shift with wind direction, traffic volume, and weather conditions. Local monitoring for the wider area tends to track closely with this general pattern.
Today - 9 August | Pollution peaks at 08:00
AQI:
Fair
38.2/100
PM2.5 (fine particles):
Good
6.1/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Good
0.6/100
O3 (ozone):
Fair
38.2/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.9/100
PM1 (ultrafine particles):
Good
5.0/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 12:00
AQI:
Fair
33.1/100
PM2.5 (fine particles):
Good
5.9/100
PM10 (coarse particles):
Good
3.3/100
NO2 (nitrogen dioxide):
Good
0.4/100
O3 (ozone):
Fair
33.1/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.0/100
PM1 (ultrafine particles):
Good
4.6/100
Pollen forecast in Whitchurch-Stouffville
View pollen forecastFrequently Asked Questions
Is air quality bad in Whitchurch-Stouffville right now?
On 9 August 2026, overall air quality in Whitchurch-Stouffville is fair. AQI is the main air quality indicator at 38.2/100. Pollution peaks around 8:00 AM (O3: 38.2/100).
Will air quality be worse tomorrow in Whitchurch-Stouffville?
On 10 August 2026, air quality conditions in Whitchurch-Stouffville will be similar to today, with AQI forecast at fair at 33.1/100. Pollution peaks around 12:00 PM (O3: 33.1/100).
When is air pollution at its worst in Whitchurch-Stouffville?
Winter tends to bring the year's worst particulate spikes here, driven by the combination of home heating and calm winter air that resists mixing. Summer heat pushes ozone to the forefront of local air quality concerns, which forms readily in strong sunlight and heat, and can spike further during wildfire smoke events. Spring and autumn tend to offer a breather, with steadier winds helping keep pollutant levels down.
Are air quality levels in Whitchurch-Stouffville 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: 9 August 2026 at 20:27 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.
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