Worst air pollution Downtown Lethbridge - Lethbridge, today and tomorrow
Today (16 July): Air quality in Downtown Lethbridge is fair. O3 is fair; AQI and NO2 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (NO2: 53.9/100).
Tomorrow (17 July 2026): Air quality in Downtown Lethbridge is poor. AQI worsens to poor; PM2.5 increases to fair; NO2 increases to poor; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 PM (NO2: 64.0/100). 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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Downtown Lethbridge's air quality benefits from near-constant prairie winds sweeping through the coulees, with Highway 3 traffic through downtown the primary local source.
Today - 16 July | Pollution peaks at 00:00
AQI:
Medium
53.9/100
PM2.5 (fine particles):
Good
17.9/100
PM10 (coarse particles):
Good
6.4/100
NO2 (nitrogen dioxide):
Medium
53.9/100
O3 (ozone):
Fair
28.8/100
SO2 (sulfur dioxide):
Good
15.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
14.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 17:00
AQI:
Poor
64.0/100
PM2.5 (fine particles):
Fair
24.5/100
PM10 (coarse particles):
Good
8.9/100
NO2 (nitrogen dioxide):
Poor
64.0/100
O3 (ozone):
Fair
22.7/100
SO2 (sulfur dioxide):
Good
14.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.6/100
PM1 (ultrafine particles):
Fair
20.7/100
Other Landmarks in Lethbridge
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Frequently Asked Questions
Is air quality bad in Downtown Lethbridge right now?
On 16 July 2026, overall air quality in Downtown Lethbridge is fair. O3 is the main pollutant at 28.8/100. Pollution peaks around 12:00 AM (NO2: 53.9/100).
Will air quality be worse tomorrow in Downtown Lethbridge?
On 17 July 2026, air quality conditions in Downtown Lethbridge will be worse than today, with AQI forecast at poor at 64.0/100. Pollution peaks around 5:00 PM (NO2: 64.0/100).
When is air pollution at its worst in Downtown Lethbridge?
Air quality in Downtown Lethbridge shifts noticeably across the seasons, shaped by its coulee-swept core along Highway 3. 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 Downtown Lethbridge 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