Air Quality Warning
5:10 a.m. EDT Thursday 31 July 2025

Air Quality Warning in effect for:
  • Fort Frances - Emo - Rainy River
Smoke from forest fires over the Prairies has moved over the area causing extremely high levels of air pollution. Poor air quality is expected to persist through Friday for most areas.

People more likely to be impacted by wildfire smoke, including people aged 65 and older, pregnant people, infants and young children, people with an existing illness or chronic health condition, and people who work outdoors, should avoid strenuous activities outdoors and seek medical attention if experiencing symptoms.

As smoke levels increase, health risks increase. Limit time outdoors. Consider reducing or rescheduling outdoor sports, activities and events.

You may experience mild and common symptoms such as eye, nose and throat irritation, headaches or a mild cough. More serious but less common symptoms include wheezing, chest pains or severe cough. If you think you are having a medical emergency, seek immediate medical assistance.

When indoors, keep windows and doors closed as much as possible. When there is an extreme heat event occurring with poor air quality, prioritize keeping cool.

Protect your indoor air from wildfire smoke. Actions can include using a clean, good quality air filter in your ventilation system and/or a certified portable air cleaner that can filter fine particles.

If you must spend time outdoors, a well-constructed, well-fitting and properly worn respirator type mask (such as a NIOSH-certified N95 or equivalent respirator) can reduce your exposure to the fine particles in the smoke. Even though exposure may be reduced, there can still be risks to health.

Check in on others who are in your care or live nearby who may be more likely to be impacted by outdoor air pollution.

Always follow guidance from local authorities.

Learn more at https://www.canada.ca/wildfire-smoke.

For further information visit the website https://www.airqualityontario.com/ or contact the Ontario Ministry of the Environment, Conservation and Parks at 416-314-6666.

Visit http://www.airhealth.ca for information on how to reduce your health risk and your personal contribution to pollution levels, as well as for current and forecast AQHI values.

Please continue to monitor alerts and forecasts issued by Environment Canada.

Issued by Environment Canada and the Province of Ontario

Observed at: Fort Frances
Date: 2:00 PM CDT Thursday 31 July 2025
Temp.: 22 °C
Wind: WNW 11 km/h
Humidity: 41 %
Dew point: 8 °C
Pressure: 103.0 kPa
Tendency: 0.06 kPa
Visibility: km
Sunrise: 5:46
Sunset: 20:53
Normals:
Max 25°C Min 13°C
 Extended Forecast - Environment Canada
Today
Sunny
Sunny
Max: 24°C
Fri, 1 Aug
Sunny
Sunny
Max: 25°C
Sat, 2 Aug
Sunny
Sunny
Max: 27°C
Sun, 3 Aug
Sunny
Sunny
Max: 24°C
Mon, 4 Aug
A mix of sun and cloud
A mix of sun and cloud
Max: 25°C
Tue, 5 Aug
A mix of sun and cloud
A mix of sun and cloud
Max: 27°C
Wed, 6 Aug
Cloudy
Cloudy
Max: 25°C
Tonight
Clear
Clear
Min: 11°C
Night
Clear
Clear
Min: 13°C
Night
Clear
Clear
Min: 15°C
Night
Cloudy periods
Cloudy periods
Min: 15°C
Night
Cloudy periods
Cloudy periods
Min: 16°C
Night
Cloudy periods
Cloudy periods
Min: 16°C
 

Forecast

Fort Frances, ON (Issued: 11:30 AM EDT Thursday 31 July 2025)

Today
Sunny. Local smoke. High 24. UV index 7 or high.
Tonight
Clear. Local smoke. Low 11.
Fri, 1 Aug
Sunny. Local smoke. High 25. Humidex 27. UV index 1 or low.
Night
Clear. Low 13.
Sat, 2 Aug
Sunny. High 27.
Night
Clear. Low 15.
Sun, 3 Aug
Sunny. High 24.
Night
Cloudy periods. Low 15.
Mon, 4 Aug
A mix of sun and cloud. High 25.
Night
Cloudy periods. Low 16.
Tue, 5 Aug
A mix of sun and cloud. High 27.
Night
Cloudy periods. Low 16.
Wed, 6 Aug
Cloudy. High 25.

24 Hour Forecast - Fort Frances, ON

Date/Time Temp.
(°C)

Weather Conditions

LOP †
Wind
(km/h)
31 July 2025
4 PM 23 Sunny (0%)  Sunny 0 VR 5
5 PM 24 Sunny (0%)  Sunny 0 VR 5
6 PM 23 Sunny (0%)  Sunny 0 VR 5
7 PM 23 Sunny (0%)  Sunny 0 VR 5
8 PM 22 Sunny (0%)  Sunny 0 VR 5
9 PM 20 Sunny (0%)  Sunny 0 VR 5
10 PM 19 Clear (0%)  Clear 0 VR 5
11 PM 17 Clear (0%)  Clear 0 VR 5
1 August 2025
12 AM 16 Clear (0%)  Clear 0 VR 5
1 AM 15 Clear (0%)  Clear 0 VR 5
2 AM 14 Clear (0%)  Clear 0 VR 5
3 AM 13 Clear (0%)  Clear 0 VR 5
4 AM 13 Clear (0%)  Clear 0 VR 5
5 AM 12 Clear (0%)  Clear 0 VR 5
6 AM 12 Clear (0%)  Clear 0 VR 5
7 AM 11 Sunny (0%)  Sunny 0 VR 5
8 AM 11 Sunny (0%)  Sunny 0 VR 5
9 AM 14 Sunny (0%)  Sunny 0 VR 5
10 AM 17 Sunny (0%)  Sunny 0 VR 5
11 AM 20 Sunny (0%)  Sunny 0 VR 5
12 PM 21 Sunny (0%)  Sunny 0 VR 5
1 PM 22 Sunny (0%)  Sunny 0 VR 5
2 PM 23 Sunny (0%)  Sunny 0 VR 5
3 PM 24 Sunny (0%)  Sunny 0 VR 5
 
† Likelihood of Precipitation (LOP) as described in the public forecast as a chance of measurable precipitation for a period of time.
  Nil: 0%
  Low: 40% or below
  Medium: 60% or 70%
  High: Above 70%

Environment Canada