Thunder Bay: Misty Morning with a Smoky Afternoon Ahead

THUNDER BAY – Weather – Across the region to the west, Sioux Lookout, Dryden, Vermilion Bay, Kenora are all under smoke advisories due to wildfire smoke.

Those conditions appear headed our way.

Residents in Thunder Bay woke up to misty skies and saturated air as the temperature hovered around 9°C early this morning. The humidity has reached 100%, and visibility is currently limited to 1.6 km at Thunder Bay Airport. Expect localized smoke to move into the area by this afternoon, adding a layer of haze to an otherwise sunny and warm day.

🌤️ Today’s Weather Overview

Current Conditions (as of 7:00 AM EDT):

• Temperature: 8.9°C

• Humidity: 100%

• Wind: WSW at 9 km/h

• Pressure: 101.6 kPa (falling)

• Visibility: 1.6 km

• Conditions: Mist

🔎 Forecast for Today: Saturday, July 19

• Sky: A mix of sun and cloud

• Smoke: Local smoke developing this afternoon

• High: 23°C

• Humidex: 27

• UV Index: 7 (High)

🌙 Tonight:

• Clouds: Partly cloudy early this evening, becoming clear overnight

• Chance of Showers: 30%

• Thunderstorm Risk: Present during the evening hours

• Smoke: Local smoke expected to linger

• Low: 12°C

🔭 Outlook for the Coming Days

Sunday, July 20

• Conditions: Sunny

• Smoke: Local smoke in the morning

• High: 26°C

• UV Index: 8 (Very High)

🌙 Night: Clear

• Low: 11°C

Monday, July 21

• Conditions: Sunny

• High: 23°C

🌙 Night: Cloudy periods with 60% chance of showers

• Low: 14°C

👕 Wardrobe Recommendations

• Mornings are cool – bring a light jacket if heading out early.

• Afternoon warmth and smoke mean light, breathable clothing and a protective mask for sensitive individuals.

• UV protection is a must with an index of 7 or higher – sunglasses, sunscreen, and a hat are recommended.

🌎 Weather Trivia

Did you know?
Thunder Bay’s geography at the head of Lake Superior means it’s often subject to trapped air masses, leading to fog and mist in the morning, followed by clearer but smokier afternoons when winds shift. These microclimate effects are especially noticeable during wildfire season.