Worst air pollution Downtown Medicine Hat - Medicine Hat, today and tomorrow
Today (20 September): Air quality in Downtown Medicine Hat is moderate. AQI and PM2.5 are moderate; PM10 and NO2 are fair; O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (PM2.5: 48.8/100).
Tomorrow (21 September 2026): Air quality in Downtown Medicine Hat is moderate. NO2 increases to moderate; all other pollutants stay as today. Pollution peaks around 12:00 PM (NO2: 57.0/100). Airmine updates local air quality forecasts four times daily.
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Downtown Medicine Hat's air quality benefits from its river-valley position, with Highway 3 traffic through downtown the primary modest local source.
Today - 20 September | Pollution peaks at 11:00
AQI:
Moderate
48.8/100
PM2.5 (fine particles):
Moderate
48.8/100
PM10 (coarse particles):
Fair
30.2/100
NO2 (nitrogen dioxide):
Fair
34.9/100
O3 (ozone):
Good
17.9/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
1.7/100
PM1 (ultrafine particles):
Good
4.2/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 12:00
AQI:
Moderate
57.0/100
PM2.5 (fine particles):
Moderate
52.7/100
PM10 (coarse particles):
Fair
34.0/100
NO2 (nitrogen dioxide):
Moderate
57.0/100
O3 (ozone):
Good
19.5/100
SO2 (sulfur dioxide):
Good
2.1/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
1.2/100
PM1 (ultrafine particles):
Good
6.6/100
Other Landmarks in Medicine Hat
Sports venues in Medicine Hat
Frequently Asked Questions
Is air quality bad in Downtown Medicine Hat right now?
On 20 September 2026, overall air quality in Downtown Medicine Hat is moderate. AQI is the main air quality indicator at 48.8/100. Pollution peaks around 11:00 AM (PM2.5: 48.8/100).
Will air quality be worse tomorrow in Downtown Medicine Hat?
On 21 September 2026, air quality conditions in Downtown Medicine Hat will be similar to today, with AQI forecast at moderate at 57.0/100. Pollution peaks around 12:00 PM (NO2: 57.0/100).
When is air pollution at its worst in Downtown Medicine Hat?
Downtown Medicine Hat's air quality varies through the year, influenced by its river-valley streets near Highway 3. Winter cold snaps can trap local emissions near the ground on calm days, while hot, dry summers bring farm dust and a real risk of wildfire smoke drifting in from further afield. Strong, steady prairie winds usually clear the air within a day or two of any buildup.
Are air quality levels in Downtown Medicine Hat 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: 20 September 2026 at 14:33 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.
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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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