Worst air pollution Alma, today and tomorrow
Today (16 July): Air quality in Alma is fair. NO2 is fair; AQI 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 Alma is fair. AQI worsens to fair; NO2 decreases to good; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 9:00 AM (O3: 39.8/100). 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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Alma's air quality reflects its aluminum-smelting industry position at Lac Saint-Jean, with Rio Tinto operations contributing industrial emissions alongside vehicle traffic amid reasonable regional ventilation.
Today - 16 July | Pollution peaks at 08:00
AQI:
Medium
50.9/100
PM2.5 (fine particles):
Good
9.6/100
PM10 (coarse particles):
Good
3.1/100
NO2 (nitrogen dioxide):
Fair
20.5/100
O3 (ozone):
Medium
50.9/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.0/100
PM1 (ultrafine particles):
Good
11.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 09:00
AQI:
Fair
39.8/100
PM2.5 (fine particles):
Good
7.5/100
PM10 (coarse particles):
Good
2.5/100
NO2 (nitrogen dioxide):
Good
18.3/100
O3 (ozone):
Fair
39.8/100
SO2 (sulfur dioxide):
Good
2.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Good
8.6/100
Pollen forecast in Alma
View pollen forecastFrequently Asked Questions
Is air quality bad in Alma right now?
On 16 July 2026, overall air quality in Alma is fair. NO2 is the main pollutant at 20.5/100. Pollution peaks around 8:00 AM (O3: 50.9/100).
Will air quality be worse tomorrow in Alma?
On 17 July 2026, air quality conditions in Alma will be similar to today, with AQI forecast at fair at 39.8/100. Pollution peaks around 9:00 AM (O3: 39.8/100).
When is air pollution at its worst in Alma?
In Alma, air quality changes through the year largely because of its aluminum smelter 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 Alma 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