Worst air pollution Smiths Falls, today and tomorrow
Today (16 July): Air quality in Smiths Falls is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 37.0/100).
Tomorrow (17 July 2026): Air quality in Smiths Falls is fair. All pollutants stay as today. Pollution peaks around 8:00 AM (O3: 30.4/100). 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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Smiths Falls' air quality benefits from its inland Rideau Canal position, with vehicle traffic on Highway 15 the primary local source amid generally good rural eastern Ontario wind dispersal.
Today - 16 July | Pollution peaks at 07:00
AQI:
Fair
37.0/100
PM2.5 (fine particles):
Good
10.0/100
PM10 (coarse particles):
Good
4.5/100
NO2 (nitrogen dioxide):
Good
16.0/100
O3 (ozone):
Fair
37.0/100
SO2 (sulfur dioxide):
Good
4.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Good
8.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 08:00
AQI:
Fair
30.4/100
PM2.5 (fine particles):
Good
9.8/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Good
17.9/100
O3 (ozone):
Fair
30.4/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.4/100
PM1 (ultrafine particles):
Good
7.9/100
Pollen forecast in Smiths Falls
View pollen forecastFrequently Asked Questions
Is air quality bad in Smiths Falls right now?
On 16 July 2026, overall air quality in Smiths Falls is fair. AQI is the main air quality indicator at 37.0/100. Pollution peaks around 7:00 AM (O3: 37.0/100).
Will air quality be worse tomorrow in Smiths Falls?
On 17 July 2026, air quality conditions in Smiths Falls will be similar to today, with AQI forecast at fair at 30.4/100. Pollution peaks around 8:00 AM (O3: 30.4/100).
When is air pollution at its worst in Smiths Falls?
Smiths Falls's air quality follows a seasonal rhythm tied to the Rideau Canal waterway running through town. Air quality is generally good, though spring and fall fieldwork stir up dust and occasional agricultural burning, and summer humidity can trap haze close to the ground. Away from the main roads, air quality generally stays good even during the busier farming months.
Are air quality levels in Smiths Falls 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