August 8, 2025: Winnipeg’s Detailed Weather Forecast with Air Quality Alert

Winnipeg Manitoba

WINNIPEG – WEATHER – An Air Quality Warning remains in effect for the City of Winnipeg as wildfire smoke continues to blanket the region, reducing visibility and posing a significant health risk. This comes as light rainshowers and shifting winds introduce some instability into the atmosphere today. The smoky conditions are expected to fluctuate throughout the day, making outdoor activity planning particularly difficult and health-sensitive.

Today’s Weather Overview

Current Conditions

As of 6:00 AM CDT at Winnipeg Richardson International Airport:

  • Temperature: 20.9°C

  • Humidity: 78%

  • Dew Point: 16.9°C

  • Wind: East at 22 km/h

  • Pressure: 100.5 kPa, falling

  • Visibility: 5 km due to smoke

  • Condition: Light rainshower

  • Humidex: 26°C

The morning begins with light rainshowers, offering brief but limited relief from the heat and haze. However, smoke from regional wildfires continues to hang over the city. Winds from the east are expected to shift through the day, further affecting air quality and visibility.

Air Quality Warning in Effect

Risk Level: Elevated for all individuals
Who’s Most Affected:

  • Seniors

  • Pregnant individuals

  • Infants and young children

  • People with heart or lung conditions

  • Outdoor workers

🔴 Health Guidance

  • Avoid strenuous activity outdoors

  • Keep windows and doors closed indoors

  • Use air purifiers or HVAC systems with clean filters

  • If outdoors is unavoidable, wear a NIOSH-certified N95 mask

Tonight

  • Skies remain mainly cloudy

  • Showers or thunderstorms may develop late in the evening

  • Local smoke will persist throughout the night

  • Low: 18°C

Tomorrow’s Forecast

Expected Conditions

Saturday, August 9

  • Mix of sun and cloud

  • Winds remain moderate

  • High: 25°C

  • Overnight Low: 16°C

  • Smoke may linger into Saturday, though a clearing trend is possible late in the day

Sunday, August 10

  • Sunny and clearer conditions are forecast

  • High: 25°C

  • Low: 15°C

Monday, August 11

  • Sun and cloud mix

  • High: 24°C

  • Low: 14°C


Wardrobe & Health Recommendations

  • Today: Wear light, breathable fabrics to stay cool in the humidity. Consider a respirator mask (N95) when outdoors to protect from smoke inhalation. Avoid prolonged outdoor exposure unless absolutely necessary.

  • Tonight: If thunderstorms develop, avoid travel during lightning risk periods. Keep windows closed due to continued smoke.

  • Weekend: Pack for moderate summer weather—but check air quality before heading outside. Portable air purifiers are highly recommended if indoors without central air.

Weather Trivia

Did you know?
Winnipeg’s lowest visibility due to wildfire smoke in recent history was less than 1 km, recorded during the 2021 wildfire season. While today’s 5 km is manageable for most, even this level of smoke contains dangerous fine particulate matter (PM2.5), which can penetrate deep into the lungs—even if you can’t smell the smoke strongly.

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