Worst air pollution Napanee, today and tomorrow
Today (16 July): Air quality in Napanee is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (O3: 37.5/100).
Tomorrow (17 July 2026): Air quality in Napanee is fair. All pollutants stay as today. Pollution peaks around 8:00 AM (O3: 30.7/100). 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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Napanee's air quality benefits from its inland eastern Ontario position, with vehicle traffic on Highway 401 the primary local source amid generally good regional wind dispersal.
Today - 16 July | Pollution peaks at 09:00
AQI:
Fair
37.5/100
PM2.5 (fine particles):
Good
14.6/100
PM10 (coarse particles):
Good
7.4/100
NO2 (nitrogen dioxide):
Fair
21.2/100
O3 (ozone):
Fair
37.5/100
SO2 (sulfur dioxide):
Good
3.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.0/100
PM1 (ultrafine particles):
Good
13.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 08:00
AQI:
Fair
30.7/100
PM2.5 (fine particles):
Good
12.8/100
PM10 (coarse particles):
Good
5.1/100
NO2 (nitrogen dioxide):
Fair
20.3/100
O3 (ozone):
Fair
30.7/100
SO2 (sulfur dioxide):
Good
3.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Good
10.3/100
Pollen forecast in Napanee
View pollen forecastFrequently Asked Questions
Is air quality bad in Napanee right now?
On 16 July 2026, overall air quality in Napanee is fair. AQI is the main air quality indicator at 37.5/100. Pollution peaks around 9:00 AM (O3: 37.5/100).
Will air quality be worse tomorrow in Napanee?
On 17 July 2026, air quality conditions in Napanee will be similar to today, with AQI forecast at fair at 30.7/100. Pollution peaks around 8:00 AM (O3: 30.7/100).
When is air pollution at its worst in Napanee?
The air over Napanee varies through the year, influenced by farmland along the Napanee River near Lake Ontario. 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 Napanee 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