🔥 Trending Calgary Air Quality Update: Wildfire Smoke Causes 'Very High Risk'

As of July 25, 2026, the air quality in Calgary is currently rated as "Moderate" with an Air Quality Index (AQI) of 68 ³. This indicates that the air quality is acceptable, but there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution ³.

However, it's important to note that Calgary has recently experienced periods of significantly poorer air quality. On Friday, July 24, 2026, Calgary recorded the worst air quality in Canada, with its Air Quality Health Index (AQHI) reaching the highest-risk category due to wildfire smoke ⁷. This event caused symptoms like dizziness for some residents ⁷.

Current Air Quality Details

• AQI: 68 ³
• Classification: Moderate ³
• Primary Pollutants: Information on specific pollutant levels (PM2.5, PM10, ozone) is available, but the overall AQI is the general indicator ³.

Factors Affecting Calgary's Air Quality

Calgary's air quality is frequently impacted by wildfire smoke, particularly during wildfire seasons in Western Canada and the United States ⁶⁷. Smoke plumes can travel long distances, significantly degrading air quality even far from the source ⁶.

When Will Air Quality Improve?

Predicting the exact timing of air quality improvement is challenging as it heavily depends on several dynamic factors:

• Wildfire Activity: The intensity, location, and containment of active wildfires are primary drivers. New fires or increased activity can quickly worsen conditions ⁶.
• Wind Patterns: Wind direction and speed play a crucial role in transporting smoke. A shift in wind can either clear the air or bring in more smoke ⁶.
• Weather Systems: Rain can help to wash pollutants out of the air, and changes in atmospheric pressure can influence how smoke disperses ¹⁰.

Environment Canada provides hourly forecasts and air quality alerts for Calgary, which are the most reliable sources for short-term predictions ²⁹¹⁰. These forecasts often include information on the Air Quality Health Index (AQHI) and any public alerts related to air quality ⁹.

Given the recent severe conditions ⁷, residents should continue to monitor local forecasts closely. While the current AQI is moderate, the situation can change rapidly.

Recommendations During Periods of Poor Air Quality

When air quality is poor, especially due to wildfire smoke, health authorities recommend taking precautions:

• Stay Indoors: Limit outdoor activities, especially strenuous ones ².
• Protect Indoor Air:
• Use the highest quality air filter your ventilation system can handle ².
• Consider using a certified portable air cleaner that can filter fine particles ².
• Keep windows and doors closed ².
• Consult Health Advice: Individuals with respiratory conditions, the elderly, and young children are particularly vulnerable and should follow specific health advice from local authorities ².

It's advisable to regularly check official sources like Environment Canada ²⁹¹⁰, AirNow ¹, or IsTheAirSafe.com ³ for the most up-to-date information on Calgary's air quality and forecasts.