Worst air pollution Halifax Citadel - Halifax, today and tomorrow
Today (16 July): Air quality in Halifax Citadel 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: 37.0/100).
Tomorrow (17 July 2026): Air quality in Halifax Citadel is fair. All pollutants stay as today. Pollution peaks around 9:00 AM (O3: 30.4/100). 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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Halifax Citadel's air quality benefits from its elevated hilltop position offering natural ventilation, with downtown Halifax traffic below the modest local source.
Today - 16 July | Pollution peaks at 08:00
AQI:
Fair
37.0/100
PM2.5 (fine particles):
Good
5.6/100
PM10 (coarse particles):
Good
2.5/100
NO2 (nitrogen dioxide):
Good
1.1/100
O3 (ozone):
Fair
37.0/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Good
4.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 09:00
AQI:
Fair
30.4/100
PM2.5 (fine particles):
Good
5.4/100
PM10 (coarse particles):
Good
2.4/100
NO2 (nitrogen dioxide):
Good
1.1/100
O3 (ozone):
Fair
30.4/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.4/100
PM1 (ultrafine particles):
Good
4.2/100
Other Landmarks in Halifax
Sports venues in Halifax
Frequently Asked Questions
Is air quality bad in Halifax Citadel right now?
On 16 July 2026, overall air quality in Halifax Citadel is fair. AQI is the main air quality indicator at 37.0/100. Pollution peaks around 8:00 AM (O3: 37.0/100).
Will air quality be worse tomorrow in Halifax Citadel?
On 17 July 2026, air quality conditions in Halifax Citadel will be similar to today, with AQI forecast at fair at 30.4/100. Pollution peaks around 9:00 AM (O3: 30.4/100).
When is air pollution at its worst in Halifax Citadel?
Halifax Citadel's air quality changes through the year largely because of its hilltop fortress position above the harbour. Frequent Atlantic storms keep the air generally clean through much of the year, though summer humidity and occasional stagnant spells can allow local emissions to build up. Onshore breezes off the Atlantic usually clear the air within a day or so.
Are air quality levels in Halifax Citadel 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