Worst air pollution Lake Cowichan, today and tomorrow
Today (15 July): Air quality in Lake Cowichan is poor. AQI and NO2 are poor; PM2.5 and PM1 are fair; O3 and SO2 are medium; PM10, CO, and HCHO are good. Pollution peaks around 10:00 PM (NO2: 75.7/100).
Tomorrow (16 July 2026): Air quality in Lake Cowichan is very poor. AQI worsens to very poor; NO2 increases to very poor; SO2 increases to fair; all other pollutants stay as today. Pollution peaks around 2:00 PM (NO2: 80.2/100). 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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Lake Cowichan's air quality reflects its forested valley position, with historic logging operations and occasional summer wildfire smoke the main local concerns.
Today - 15 July | Pollution peaks at 22:00
AQI:
Poor
75.7/100
PM2.5 (fine particles):
Fair
32.0/100
PM10 (coarse particles):
Good
12.8/100
NO2 (nitrogen dioxide):
Poor
75.7/100
O3 (ozone):
Medium
40.3/100
SO2 (sulfur dioxide):
Medium
40.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Fair
32.2/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 14:00
AQI:
Very poor
80.2/100
PM2.5 (fine particles):
Fair
37.2/100
PM10 (coarse particles):
Good
13.3/100
NO2 (nitrogen dioxide):
Very poor
80.2/100
O3 (ozone):
Medium
49.1/100
SO2 (sulfur dioxide):
Fair
30.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.8/100
PM1 (ultrafine particles):
Fair
38.5/100
Pollen forecast in Lake Cowichan
View pollen forecastFrequently Asked Questions
Is air quality bad in Lake Cowichan right now?
On 15 July 2026, overall air quality in Lake Cowichan is poor. AQI is the main air quality indicator at 75.7/100. Pollution peaks around 10:00 PM (NO2: 75.7/100).
Will air quality be worse tomorrow in Lake Cowichan?
On 16 July 2026, air quality conditions in Lake Cowichan will be worse than today, with AQI forecast at very poor at 80.2/100. Pollution peaks around 2:00 PM (NO2: 80.2/100).
When is air pollution at its worst in Lake Cowichan?
Lake Cowichan sees clear seasonal swings in air quality, driven in part by its lakeside forestry setting on Vancouver Island. Winter brings frequent rain that keeps the air clean and washed, while summer's drier stretches can occasionally trap traffic emissions and, in bad wildfire years, smoke drifting in from the BC Interior. Frequent Pacific storms during the cooler months usually clear the air completely within a day.
Are air quality levels in Lake Cowichan 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