Worst air pollution Castle Downs - Edmonton, today and tomorrow
Today (16 July): Air quality in Castle Downs 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: 28.3/100).
Tomorrow (17 July 2026): Air quality in Castle Downs is fair. All pollutants stay as today. Pollution peaks around 7:00 AM (O3: 27.1/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Castle Downs's air quality reflects its suburban north-Edmonton position, with 97th Street and 153rd Avenue traffic the primary local sources.
Today - 16 July | Pollution peaks at 08:00
AQI:
Fair
28.3/100
PM2.5 (fine particles):
Good
10.3/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Good
3.9/100
O3 (ozone):
Fair
28.3/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
8.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 07:00
AQI:
Fair
27.1/100
PM2.5 (fine particles):
Good
12.5/100
PM10 (coarse particles):
Good
4.5/100
NO2 (nitrogen dioxide):
Good
2.4/100
O3 (ozone):
Fair
27.1/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.6/100
PM1 (ultrafine particles):
Good
9.8/100
Other Landmarks in Edmonton
Sports venues in Edmonton
Frequently Asked Questions
Is air quality bad in Castle Downs right now?
On 16 July 2026, overall air quality in Castle Downs is fair. AQI is the main air quality indicator at 28.3/100. Pollution peaks around 8:00 AM (O3: 28.3/100).
Will air quality be worse tomorrow in Castle Downs?
On 17 July 2026, air quality conditions in Castle Downs will be similar to today, with AQI forecast at fair at 27.1/100. Pollution peaks around 7:00 AM (O3: 27.1/100).
When is air pollution at its worst in Castle Downs?
Castle Downs's air quality changes through the year largely because of its suburban north-Edmonton streets near 97th Street and 153rd Avenue. Cold, still winter days can trap traffic and heating emissions near the ground, while hot summer stretches sometimes bring drifting wildfire smoke from further north or west. Strong prairie winds usually clear the air within a day or two.
Are air quality levels in Castle Downs 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.
Check air quality in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app