Worst air pollution Halifax, today and tomorrow
Today (9 August): Air quality in Halifax is fair. AQI, PM2.5, NO2, and O3 are fair; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (O3: 35.3/100).
Tomorrow (10 August 2026): Air quality in Halifax is fair. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 11:00 AM (O3: 40.3/100). 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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Air quality in Halifax is driven mostly by humid south-central Virginia air — spring pine pollen brings a heavy yellow dusting. Halifax doesn't see much year-to-year variation in this basic pattern, though individual weeks can differ. Longer-term residents of Halifax tend to plan outdoor activity around these predictable shifts.
Today - 9 August | Pollution peaks at 10:00
AQI:
Fair
35.3/100
PM2.5 (fine particles):
Fair
21.1/100
PM10 (coarse particles):
Good
8.1/100
NO2 (nitrogen dioxide):
Fair
20.7/100
O3 (ozone):
Fair
35.3/100
SO2 (sulfur dioxide):
Good
7.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.2/100
PM1 (ultrafine particles):
Good
14.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 11:00
AQI:
Medium
40.3/100
PM2.5 (fine particles):
Fair
24.8/100
PM10 (coarse particles):
Good
10.0/100
NO2 (nitrogen dioxide):
Fair
24.1/100
O3 (ozone):
Medium
40.3/100
SO2 (sulfur dioxide):
Good
7.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.2/100
PM1 (ultrafine particles):
Good
16.7/100
Pollen forecast in Halifax
View pollen forecastFrequently Asked Questions
Is air quality bad in Halifax right now?
On 9 August 2026, overall air quality in Halifax is fair. AQI is the main air quality indicator at 35.3/100. Pollution peaks around 10:00 AM (O3: 35.3/100).
Will air quality be worse tomorrow in Halifax?
On 10 August 2026, air quality conditions in Halifax will be similar to today, with PM2.5 forecast at fair at 24.8/100. Pollution peaks around 11:00 AM (O3: 40.3/100).
When is air pollution at its worst in Halifax?
Like most US cities, Halifax sees air quality shift from season to season. Typically, once summer ozone season ends, winter typically offers the cleanest air, while the peak of summer humidity, combined with heavy traffic corridors nearby, brings the sharpest dip. Dense urban traffic corridors add a persistent background level of pollution that varies less by season than ozone does.
Are air quality levels in Halifax 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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