Worst air pollution Sheffield Glen - Ottawa, today and tomorrow
Today (24 August): Air quality in Sheffield Glen 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: 28.4/100).
Tomorrow (25 August 2026): Air quality in Sheffield Glen is fair. All pollutants stay as today. Pollution peaks around 8:00 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 Sheffield Glen, dense traffic and everyday urban activity are the main drivers of local particulate matter and nitrogen dioxide levels. Some of this load is absorbed by nearby vegetation, acting as a modest natural filter. 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 - 24 August | Pollution peaks at 11:00
AQI:
Fair
28.4/100
PM2.5 (fine particles):
Good
4.2/100
PM10 (coarse particles):
Good
1.6/100
NO2 (nitrogen dioxide):
Good
6.0/100
O3 (ozone):
Fair
28.4/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.6/100
PM1 (ultrafine particles):
Good
3.5/100
Levels show the poorest local air quality during the day
Tomorrow - 25 August | Pollution peaks at 08:00
AQI:
Fair
25.2/100
PM2.5 (fine particles):
Good
4.7/100
PM10 (coarse particles):
Good
1.7/100
NO2 (nitrogen dioxide):
Good
12.7/100
O3 (ozone):
Fair
25.2/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.2/100
PM1 (ultrafine particles):
Good
3.8/100
Other Landmarks in Ottawa
Sports venues in Ottawa
Frequently Asked Questions
Is air quality bad in Sheffield Glen right now?
On 24 August 2026, overall air quality in Sheffield Glen is fair. AQI is the main air quality indicator at 28.4/100. Pollution peaks around 11:00 AM (O3: 28.4/100).
Will air quality be worse tomorrow in Sheffield Glen?
On 25 August 2026, air quality conditions in Sheffield Glen will be similar to today, with AQI forecast at fair at 25.2/100. Pollution peaks around 8:00 AM (O3: 25.2/100).
When is air pollution at its worst in Sheffield Glen?
Winter months routinely see the year's steepest rise in particulate matter across this urban area, as urban heating and steady traffic emissions concentrate under inversions typical of calm winter days. Summer shifts the concern toward ground-level ozone across the city, since dense traffic emissions combined with intense sun and heat fuel ozone formation across the city.
Are air quality levels in Sheffield Glen 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: 25 August 2026 at 02:28 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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