Worst air pollution Saguenay, today and tomorrow
Today (16 July): Air quality in Saguenay 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 Saguenay is fair. O3 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 40.7/100). 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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Saguenay's air quality reflects its aluminum-smelting industry legacy, with the Rio Tinto smelting operations contributing industrial emissions alongside vehicle traffic, though the fjord valley provides reasonable natural ventilation.
Today - 16 July | Pollution peaks at 08:00
AQI:
Medium
50.9/100
PM2.5 (fine particles):
Good
14.4/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Medium
42.7/100
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
17.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Medium
40.7/100
PM2.5 (fine particles):
Good
11.2/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Medium
40.7/100
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
Pollen forecast in Saguenay
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Saguenay
Frequently Asked Questions
Is air quality bad in Saguenay right now?
On 16 July 2026, overall air quality in Saguenay 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 Saguenay?
On 17 July 2026, air quality conditions in Saguenay will be worse than today, with O3 forecast at fair at 39.8/100. Pollution peaks around 11:00 PM (NO2: 40.7/100).
When is air pollution at its worst in Saguenay?
Air quality in Saguenay shifts noticeably across the seasons, shaped by its aluminum smelters and position deep in the boreal Saguenay valley. For much of the year the air is clean and forest-fresh, but summer and early autumn carry real risk of smoke episodes when wildfires burn nearby or further north. Wind direction across the river determines how much of the industrial output drifts into town on any given day.
Are air quality levels in Saguenay 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