Worst air pollution Nanaimo, today and tomorrow
Today (15 July): Air quality in Nanaimo is fair. O3 and SO2 are fair; AQI and NO2 are medium; PM2.5, PM10, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 PM (NO2: 58.0/100).
Tomorrow (16 July 2026): Air quality in Nanaimo is fair. O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 10:00 PM (NO2: 56.5/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Nanaimo's air quality benefits from Georgia Strait sea breezes moving through this ferry-terminal city, with harbour traffic and Highway 19 the primary local sources amid otherwise favourable coastal ventilation.
Today - 15 July | Pollution peaks at 22:00
AQI:
Medium
58.0/100
PM2.5 (fine particles):
Good
16.6/100
PM10 (coarse particles):
Good
5.9/100
NO2 (nitrogen dioxide):
Medium
58.0/100
O3 (ozone):
Fair
36.0/100
SO2 (sulfur dioxide):
Fair
20.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
15.1/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 22:00
AQI:
Medium
56.5/100
PM2.5 (fine particles):
Good
17.5/100
PM10 (coarse particles):
Good
6.0/100
NO2 (nitrogen dioxide):
Medium
56.5/100
O3 (ozone):
Medium
51.1/100
SO2 (sulfur dioxide):
Fair
22.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.9/100
PM1 (ultrafine particles):
Good
17.4/100
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Frequently Asked Questions
Is air quality bad in Nanaimo right now?
On 15 July 2026, overall air quality in Nanaimo is fair. O3 is the main pollutant at 36.0/100. Pollution peaks around 10:00 PM (NO2: 58.0/100).
Will air quality be worse tomorrow in Nanaimo?
On 16 July 2026, air quality conditions in Nanaimo will be similar to today, with SO2 forecast at fair at 22.7/100. Pollution peaks around 10:00 PM (NO2: 56.5/100).
When is air pollution at its worst in Nanaimo?
Air quality in Nanaimo shifts noticeably across the seasons, shaped by its harbourside setting on the east coast of Vancouver Island. Mild, wet winters keep the air generally clean, while dry summer spells occasionally allow haze and, in bad years, wildfire smoke to build up. Frequent Pacific storms during the cooler months usually clear the air completely within a day.
Are air quality levels in Nanaimo 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