Worst air pollution Chicoutimi - Saguenay, today and tomorrow
Today (16 July): Air quality in Chicoutimi is medium. AQI, NO2, and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (O3: 50.9/100).
Tomorrow (17 July 2026): Air quality in Chicoutimi is fair. O3 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 40.5/100). 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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Chicoutimi's air quality benefits from its Saguenay River shoreline position, with river breezes providing reasonable ventilation across this downtown sector, though regional aluminum industry affects background levels.
Today - 16 July | Pollution peaks at 08:00
AQI:
Medium
50.9/100
PM2.5 (fine particles):
Good
14.3/100
PM10 (coarse particles):
Good
4.6/100
NO2 (nitrogen dioxide):
Medium
42.6/100
O3 (ozone):
Medium
50.9/100
SO2 (sulfur dioxide):
Good
5.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.0/100
PM1 (ultrafine particles):
Good
17.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Medium
40.5/100
PM2.5 (fine particles):
Good
11.1/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Medium
40.5/100
O3 (ozone):
Fair
39.8/100
SO2 (sulfur dioxide):
Good
5.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Good
12.8/100
Other Landmarks in Saguenay
Frequently Asked Questions
Is air quality bad in Chicoutimi right now?
On 16 July 2026, overall air quality in Chicoutimi is medium. AQI is the main air quality indicator at 50.9/100. Pollution peaks around 8:00 AM (O3: 50.9/100).
Will air quality be worse tomorrow in Chicoutimi?
On 17 July 2026, air quality conditions in Chicoutimi will be worse than today, with O3 forecast at fair at 39.8/100. Pollution peaks around 11:00 PM (NO2: 40.5/100).
When is air pollution at its worst in Chicoutimi?
The air over Chicoutimi varies through the year, influenced by its riverside downtown along the Saguenay River. Winters here typically bring the cleanest air of the year, but summer and early fall can bring sharp, sometimes prolonged drops in air quality when wildfire smoke drifts in from across the region. Wind direction across the river determines how much of the industrial output drifts into town on any given day.
Are air quality levels in Chicoutimi 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