Worst air pollution Courtenay, today and tomorrow
Today (9 August): Air quality in Courtenay 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 PM (NO2: 45.0/100).
Tomorrow (10 August 2026): Air quality in Courtenay is fair. AQI worsens to fair; NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 PM (NO2: 36.8/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Courtenay's air quality benefits from Georgia Strait proximity and valley ventilation, with Highway 19 traffic the primary local source amid otherwise clean island air.
Today - 9 August | Pollution peaks at 12:00
AQI:
Medium
45.0/100
PM2.5 (fine particles):
Good
16.2/100
PM10 (coarse particles):
Good
5.9/100
NO2 (nitrogen dioxide):
Medium
45.0/100
O3 (ozone):
Fair
39.0/100
SO2 (sulfur dioxide):
Good
12.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.0/100
PM1 (ultrafine particles):
Good
13.7/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 16:00
AQI:
Fair
36.8/100
PM2.5 (fine particles):
Good
14.3/100
PM10 (coarse particles):
Good
5.4/100
NO2 (nitrogen dioxide):
Fair
36.8/100
O3 (ozone):
Fair
23.3/100
SO2 (sulfur dioxide):
Good
8.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.1/100
PM1 (ultrafine particles):
Good
9.6/100
Pollen forecast in Courtenay
View pollen forecastFrequently Asked Questions
Is air quality bad in Courtenay right now?
On 9 August 2026, overall air quality in Courtenay is fair. O3 is the main pollutant at 39.0/100. Pollution peaks around 12:00 PM (NO2: 45.0/100).
Will air quality be worse tomorrow in Courtenay?
On 10 August 2026, air quality conditions in Courtenay will be similar to today, with AQI forecast at fair at 36.8/100. Pollution peaks around 4:00 PM (NO2: 36.8/100).
When is air pollution at its worst in Courtenay?
Courtenay's air quality varies through the year, influenced by the farmland and forest of the Comox Valley on Vancouver Island. Persistent winter rain generally keeps pollution levels low, while dry summer stretches can bring some haze from traffic and, in smoky years, wildfires burning inland. Frequent Pacific storms during the cooler months usually clear the air completely within a day.
Are air quality levels in Courtenay 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
Check air quality in other popular cities:
Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Get the full experience in the Airmine app.