Worst air pollution Trois-Pistoles, today and tomorrow
Today (16 July): Air quality in Trois-Pistoles is poor. AQI and NO2 are poor; PM2.5 and PM1 are fair; O3 is medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 5:00 PM (NO2: 76.8/100).
Tomorrow (17 July 2026): Air quality in Trois-Pistoles is fair. AQI improves to medium; PM2.5 decreases to good; NO2 decreases to medium; all other pollutants stay as today. Pollution peaks around 12:00 AM (NO2: 54.2/100). 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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Trois-Pistoles' air quality benefits from its St. Lawrence estuary shoreline position, with river and gulf breezes providing reliable ventilation across this small Bas-Saint-Laurent town.
Today - 16 July | Pollution peaks at 17:00
AQI:
Poor
76.8/100
PM2.5 (fine particles):
Fair
26.1/100
PM10 (coarse particles):
Good
9.0/100
NO2 (nitrogen dioxide):
Poor
76.8/100
O3 (ozone):
Medium
45.0/100
SO2 (sulfur dioxide):
Good
9.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.8/100
PM1 (ultrafine particles):
Fair
30.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 00:00
AQI:
Medium
54.2/100
PM2.5 (fine particles):
Good
18.3/100
PM10 (coarse particles):
Good
5.3/100
NO2 (nitrogen dioxide):
Medium
54.2/100
O3 (ozone):
Medium
43.0/100
SO2 (sulfur dioxide):
Good
10.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.5/100
PM1 (ultrafine particles):
Fair
22.5/100
Pollen forecast in Trois-Pistoles
View pollen forecastFrequently Asked Questions
Is air quality bad in Trois-Pistoles right now?
On 16 July 2026, overall air quality in Trois-Pistoles is poor. AQI is the main air quality indicator at 76.8/100. Pollution peaks around 5:00 PM (NO2: 76.8/100).
Will air quality be worse tomorrow in Trois-Pistoles?
On 17 July 2026, air quality conditions in Trois-Pistoles will be better than today, with PM1 forecast at fair at 22.5/100. Pollution peaks around 12:00 AM (NO2: 54.2/100).
When is air pollution at its worst in Trois-Pistoles?
Trois-Pistoles's air quality follows a seasonal rhythm tied to its position along the widening St. Lawrence estuary. Spring planting and fall harvest can raise dust levels briefly, while summer heat occasionally pushes up ground-level ozone; winter usually brings the cleanest, calmest air of the year. Away from the main roads, air quality generally stays good even during the busier farming months.
Are air quality levels in Trois-Pistoles 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