Sheffield Glen, Ottawa Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in Sheffield Glen is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (NO2: 17.9/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in Sheffield Glen is moderate. AQI worsens to moderate; NO2 increases to moderate; all other pollutants stay as today. Pollution peaks around 4:00 PM (NO2: 41.7/100).
Explore Forecasts
Pollen & Mold
Air Quality for Neighborhoods
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Good | 17.9/100 |
| PM2.5 (fine particles) | Good | 13.0/100 |
| PM10 (coarse particles) | Good | 10.9/100 |
| NO2 (nitrogen dioxide) | Good | 17.9/100 |
| O3 (ozone) | Good | 12.5/100 |
| SO2 (sulfur dioxide) | Good | 0.5/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 1.3/100 |
| PM1 (ultrafine particles) | Good | 4.5/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Moderate | 41.7/100 |
| PM2.5 (fine particles) | Good | 19.6/100 |
| PM10 (coarse particles) | Good | 14.9/100 |
| NO2 (nitrogen dioxide) | Moderate | 41.7/100 |
| O3 (ozone) | Good | 12.8/100 |
| SO2 (sulfur dioxide) | Good | 0.4/100 |
| CO (carbon monoxide) | Good | 0.6/100 |
| HCHO (formaldehyde) | Good | 2.0/100 |
| PM1 (ultrafine particles) | Good | 10.2/100 |
Local Environmental Conditions
This location in Ottawa is largely built up, so vehicle exhaust and urban activity dominate the local air pollution sources. Home heating, especially wood stoves and fireplaces, adds smoke and fine particles in the colder months. Pockets of trees and green space help filter a small share of the particles from traffic. Winds are often light, which allows pollutants to linger close to where they are produced.
Hot afternoons from July to August, averaging 21°C in the warmest month, are when ozone is most likely to build up. Later, fine particle levels climb from November to April, as home heating and traffic combine with cold, still air averaging -9°C. From one day to the next, still, dry weather allows pollution to accumulate, and wind or rain clears it out.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Resource Hub
Air quality forecast neighborhoods 60 neighborhoods
Sports venues in Ottawa 2 sports venues
Frequently Asked Questions About Air Quality in Ontario
Is air quality bad in Sheffield Glen right now?
On 10 October 2026, overall air quality in Sheffield Glen is good. AQI is the main air quality indicator at 17.9/100. Pollution peaks around 4:00 PM (NO2: 17.9/100).
Will air quality be worse tomorrow in Sheffield Glen?
On 11 October 2026, air quality conditions in Sheffield Glen will be worse than today, with AQI forecast at moderate at 41.7/100. Pollution peaks around 4:00 PM (NO2: 41.7/100).
When is air pollution at its worst in Sheffield Glen?
Hot afternoons from July to August, averaging 21°C in the warmest month, are when ozone is most likely to build up. Later, fine particle levels climb from November to April, as home heating and traffic combine with cold, still air averaging -9°C. From one day to the next, still, dry weather allows pollution to accumulate, and wind or rain clears it out.
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.
Understanding the Scale
The 0–100 air quality scores represent risk levels, not direct air pollutant concentrations. Higher scores indicate higher risk.
Air Quality
| Good | 0-20 | Low air quality risk. Air quality is expected to be good, with low levels of pollution. |
| Fair | 20-40 | Generally low air quality risk. Air quality is expected to be acceptable, with some pollution present. |
| Moderate | 40-60 | Moderate air quality risk. Air pollution is elevated and air quality may be less favorable. |
| Poor | 60-80 | High air quality risk. Air pollution is high and air quality is expected to be poor. |
| Very Poor | 80-100 | Very high air quality risk. Air pollution is very high and air quality is expected to be very poor. |