Worst air pollution Marda Loop - Calgary, today and tomorrow
Today (16 July): Air quality in Marda Loop is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 35.5/100).
Tomorrow (17 July 2026): Air quality in Marda Loop is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 9:00 AM (O3: 48.7/100). 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
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Marda Loop's air quality reflects its dense inner-city commercial-residential character, with Crowchild Trail traffic nearby the primary local source.
Today - 16 July | Pollution peaks at 07:00
AQI:
Fair
35.5/100
PM2.5 (fine particles):
Good
8.5/100
PM10 (coarse particles):
Good
2.8/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
35.5/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
4.3/100
PM1 (ultrafine particles):
Good
8.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 09:00
AQI:
Medium
48.7/100
PM2.5 (fine particles):
Good
11.2/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Medium
48.7/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
5.7/100
PM1 (ultrafine particles):
Good
11.4/100
Other Landmarks in Calgary
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Frequently Asked Questions
Is air quality bad in Marda Loop right now?
On 16 July 2026, overall air quality in Marda Loop is fair. AQI is the main air quality indicator at 35.5/100. Pollution peaks around 7:00 AM (O3: 35.5/100).
Will air quality be worse tomorrow in Marda Loop?
On 17 July 2026, air quality conditions in Marda Loop will be better than today, with AQI forecast at medium at 48.7/100. Pollution peaks around 9:00 AM (O3: 48.7/100).
When is air pollution at its worst in Marda Loop?
Air quality in Marda Loop shifts noticeably across the seasons, shaped by its dense inner-city commercial strip near Crowchild Trail. Winter's sudden chinook winds can melt snow and clear the air within hours, while summer heat and wildfire smoke drifting from the Rockies occasionally push pollution higher. These warm winter winds are one of the most distinctive features of the local climate.
Are air quality levels in Marda Loop 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.
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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