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Forecast model supplied by Fire Smoke Canada for noon Thursday, July 23 (Image Credit: Fire Smoke Canada)
Moderate risk levels forecast

Smoky skies expected for Lethbridge & area Thursday

Jul 22, 2026 | 5:00 AM

UPDATE:

While hazier skies are still forecast for the Lethbridge region Thursday, Fire Smoke Canada has updated its model, adjusting its projected path of concentrated smoke.

As crews make progress with wildfires in Montana, its forecast has changed somewhat and is now pinpointing thicker smoke to enter Alberta Thursday afternoon south of the Milk River Ridge.

Environment & Climate Change Canada has also adjusted its Air Quality Health Index for Thursday, as well, for both Lethbridge and Medicine Hat from a moderate risk rating of 5 down to 4.

Even at that level, those with underlining health conditions, like breathing issues, are still recommended to avoid any strenuous activity, especially if it results in coughing or throat irritation.

We have a link to the latest AQHI reading and forecast for Lethbridge here.

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ORIGINAL STORY:

Fires in Montana state, including one discovered Tuesday morning near Whitefish, could impact air quality in the Lethbridge region by Thursday. 

A satellite model by Fire Smoke Canada is indicating the Bridge City could be under hazy skies, with the worst air quality predicted during the noon hour. 

Environment & Climate Change Canada has listed the Air Quality Health Index, or AQHI, at a moderate risk of 4, on a 10+ scale, for today and tonight, however, it’s expected to rise to 5 when thicker wildfire smoke blows in to southwestern and south central Alberta tomorrow.

Under the criteria of moderate risk, the general population can continue usual outdoor activities unless they have symptoms like coughing or throat irritation.

For those with compromised immune systems, like a respiratory condition, it’s recommended they reduce or reschedule strenuous outdoor activities, particularly if a cough or throat irritation follows.

We’ve attached a link here to the latest AQHI reading for Lethbridge.