Worst air pollution Reversing Falls - Saint John, today and tomorrow
Today (16 July): Air quality in Reversing Falls is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (O3: 36.4/100).
Tomorrow (17 July 2026): Air quality in Reversing Falls is fair. All pollutants stay as today. Pollution peaks around 9:00 AM (O3: 29.7/100). 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
Use our Strava plugin to check your own exposure.
Reversing Falls's air quality is shaped by the nearby pulp-mill's historic emissions, though strong Bay of Fundy tidal winds provide frequent ventilation of this gorge landmark.
Today - 16 July | Pollution peaks at 08:00
AQI:
Fair
36.4/100
PM2.5 (fine particles):
Good
6.8/100
PM10 (coarse particles):
Good
2.8/100
NO2 (nitrogen dioxide):
Good
10.5/100
O3 (ozone):
Fair
36.4/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Good
5.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 09:00
AQI:
Fair
29.7/100
PM2.5 (fine particles):
Good
7.8/100
PM10 (coarse particles):
Good
3.1/100
NO2 (nitrogen dioxide):
Good
12.8/100
O3 (ozone):
Fair
29.7/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.9/100
PM1 (ultrafine particles):
Good
6.4/100
Other Landmarks in Saint John
Sports venues in Saint John
Frequently Asked Questions
Is air quality bad in Reversing Falls right now?
On 16 July 2026, overall air quality in Reversing Falls is fair. AQI is the main air quality indicator at 36.4/100. Pollution peaks around 8:00 AM (O3: 36.4/100).
Will air quality be worse tomorrow in Reversing Falls?
On 17 July 2026, air quality conditions in Reversing Falls will be similar to today, with AQI forecast at fair at 29.7/100. Pollution peaks around 9:00 AM (O3: 29.7/100).
When is air pollution at its worst in Reversing Falls?
Year-round, the Reversing Falls's air quality is closely tied to its tidal rapids where the Saint John River meets the Bay of Fundy. Air quality here tends to dip in summer, when heat and industrial output combine, and again briefly in winter when cold, calm air traps emissions near ground level. Wind direction along the river has a strong influence on which neighbourhoods feel the effects most on any given day.
Are air quality levels in Reversing 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.
Check air quality in other popular cities:
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