Thunder Bay – Weather – Thunder Bay residents are waking up to cool temperatures and thick smoke, as a significant Air Quality Warning has been issued due to wildfire smoke drifting in from the Prairies.
The smoke is causing extremely poor air quality, with Environment Canada advising vulnerable groups to take immediate precautions.
The hazy conditions are expected to persist through Thursday.
Today’s Weather Overview
Current Conditions
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Temperature: 10.4°C
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Observed at: Thunder Bay Airport (7:00 AM EDT)
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Humidity: 92%
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Wind: SW 7 km/h
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Pressure: 102.4 kPa (Rising)
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Visibility: 8 km
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Condition: Smoke-filled skies
Despite calm and cool conditions early this morning, visibility remains limited due to dense wildfire smoke. Those heading outdoors are advised to do so cautiously, with proper protection like N95 respirators.
Forecast Through to the Weekend
Today – Wednesday, July 30
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Sky: Widespread smoke
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Wind: Becoming west 20 km/h late this morning
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High: 23°C
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UV Index: 7 (High)
Tonight
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Sky: Mainly cloudy, clearing late this evening
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Conditions: Local smoke continues
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Low: 10°C
Thursday, July 31
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Sky: Mainly sunny with lingering smoke
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High: 22°C
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UV Index: 7 (High)
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Night: Clear, low 9°C
Friday, August 1
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Sky: Sunny
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High: 27°C
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Night: Clear, low 11°C
Saturday, August 2
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Sky: Sunny
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High: 26°C
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Night: Clear, low 12°C
Air Quality Advisory – Health & Safety
Thunder Bay’s air quality has deteriorated to dangerous levels, particularly hazardous for:
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Seniors (65+)
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Pregnant people
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Infants and young children
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People with heart or lung conditions
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Outdoor workers
Symptoms to Watch For:
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Irritation of eyes, nose, or throat
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Headaches
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Mild or persistent coughing
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Chest pain or difficulty breathing
If experiencing severe symptoms, seek medical attention immediately.
Protective Measures:
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Limit outdoor activity as much as possible
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Use air purifiers indoors
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Wear an N95 mask when outside
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Keep windows and doors closed
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Check in on vulnerable neighbours or family members
Wardrobe & Activity Tips
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Morning Layers: It’s a cool start, but temperatures will rise throughout the day.
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Afternoon Attire: Light breathable fabrics recommended due to sun and smoke.
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Activity Warning: Postpone outdoor exercise or sports.
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Mask Use: N95 respirators recommended if outdoors for long periods.
Weather Trivia
Did you know? Wildfire smoke can travel thousands of kilometres from its source and affect areas far from active fires. In 2018, smoke from B.C. wildfires was detected as far as Ireland!
