Worst air pollution Yellowknife, today and tomorrow
Today (16 July): Air quality in Yellowknife is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 AM (O3: 21.3/100).
Tomorrow (17 July 2026): Air quality in Yellowknife is good. AQI improves to good; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 6:00 AM (O3: 19.8/100). 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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Yellowknife's air quality benefits from Great Slave Lake breezes and low regional population density, though seasonal wildfire smoke and winter wood-heating are recurring local concerns.
Today - 16 July | Pollution peaks at 04:00
AQI:
Fair
21.3/100
PM2.5 (fine particles):
Good
11.1/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
21.3/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
8.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 06:00
AQI:
Good
19.8/100
PM2.5 (fine particles):
Good
7.0/100
PM10 (coarse particles):
Good
3.1/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
19.8/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
2.1/100
Frequently Asked Questions
Is air quality bad in Yellowknife right now?
On 16 July 2026, overall air quality in Yellowknife is fair. AQI is the main air quality indicator at 21.3/100. Pollution peaks around 4:00 AM (O3: 21.3/100).
Will air quality be worse tomorrow in Yellowknife?
On 17 July 2026, air quality conditions in Yellowknife will be better than today, with AQI forecast at good at 19.8/100. Pollution peaks around 6:00 AM (O3: 19.8/100).
When is air pollution at its worst in Yellowknife?
Seasonal air quality in Yellowknife is closely linked to its position on the rocky shore of Great Slave Lake. Air quality is typically excellent through the long, cold winter, but hot, dry summer stretches can bring smoky, hazy days when wildfires burn across the region. Because the population is small, most of the year's variation comes from regional wildfire activity rather than local sources.
Are air quality levels in Yellowknife 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