Worst air pollution Old City Quarter - Nanaimo, today and tomorrow
Today (15 July): Air quality in Old City Quarter is fair. O3 is fair; AQI and NO2 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 PM (NO2: 51.9/100).
Tomorrow (16 July 2026): Air quality in Old City Quarter is medium. O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 6:00 AM (O3: 51.1/100). 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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Old City Quarter's air quality benefits from Georgia Strait sea breezes, with harbourfront ferry-terminal traffic the modest primary local source.
Today - 15 July | Pollution peaks at 22:00
AQI:
Medium
51.9/100
PM2.5 (fine particles):
Good
14.6/100
PM10 (coarse particles):
Good
5.2/100
NO2 (nitrogen dioxide):
Medium
51.9/100
O3 (ozone):
Fair
36.0/100
SO2 (sulfur dioxide):
Good
16.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
13.3/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 06:00
AQI:
Medium
51.1/100
PM2.5 (fine particles):
Good
15.4/100
PM10 (coarse particles):
Good
5.3/100
NO2 (nitrogen dioxide):
Medium
50.7/100
O3 (ozone):
Medium
51.1/100
SO2 (sulfur dioxide):
Good
18.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.9/100
PM1 (ultrafine particles):
Good
15.3/100
Other Landmarks in Nanaimo
Sports venues in Nanaimo
Frequently Asked Questions
Is air quality bad in Old City Quarter right now?
On 15 July 2026, overall air quality in Old City Quarter is fair. O3 is the main pollutant at 36.0/100. Pollution peaks around 10:00 PM (NO2: 51.9/100).
Will air quality be worse tomorrow in Old City Quarter?
On 16 July 2026, air quality conditions in Old City Quarter will be better than today, with AQI forecast at medium at 51.1/100. Pollution peaks around 6:00 AM (O3: 51.1/100).
When is air pollution at its worst in Old City Quarter?
The Old City Quarter's air quality varies through the year, influenced by its historic harbourside streets in downtown Nanaimo. 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 Old City Quarter 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