Thornbury Weather
Canada, North America
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Canada, North America
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Canada, Canada
Tuesday, 14 July 2026 at 23:28

Clear
Feels like 31°C
Humidity
58%
Wind
20.2 km/h W
Visibility
10 km
Pressure
1013 mb
Smoke from forest fire in northwestern Ontario is causing poor air quality to eastern Ontario. Poor air quality may persist tonight. ### 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. 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 reduce or reschedule strenuous activities outdoors and seek medical attention if experiencing symptoms. 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.

36°/ 24°
Sunny
Updated nowRain Chance
3%
Humidity
57%
Max Wind
29 km/h
Avg Temp
29°C
Sunrise
05:50 AM
Sunset
09:05 PM
06:00 am
24°
07:00 am
25°
08:00 am
27°
09:00 am
28°
10:00 am
29°
11:00 am
34°
12:00 pm
35°
01:00 pm
36°
02:00 pm
35°
03:00 pm
35°
04:00 pm
34°
05:00 pm
33°
06:00 pm
32°
07:00 pm
31°
08:00 pm
29°
09:00 pm
27°
10:00 pm
26°
11:00 pm
28°
12:00 am
25°
01:00 am
25°
02:00 am
24°
03:00 am
24°
04:00 am
24°
05:00 am
24°
Today
Wed, 15 Jul
UV Index
0 Low
Precipitation
0 mm
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 the highest quality air filter that your ventilation system can handle 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 wildfire smoke. Always follow guidance from local authorities. Learn more at https://www.canada.ca/wildfire-smoke.
### 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. 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 reduce or reschedule strenuous activities outdoors and seek medical attention if experiencing symptoms. 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.
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 the highest quality air filter that your ventilation system can handle 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 wildfire smoke. Always follow guidance from local authorities. Learn more at https://www.canada.ca/wildfire-smoke.
Smoke from forest fires in northwestern Ontario is causing poor air quality to eastern Ontario. Poor air quality will persist tonight and possibly into Wednesday. ### 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. 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 reduce or reschedule strenuous activities outdoors and seek medical attention if experiencing symptoms. 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.
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 the highest quality air filter that your ventilation system can handle 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 wildfire smoke. Always follow guidance from local authorities. Learn more at https://www.canada.ca/wildfire-smoke.
Thu, 16 Jul
Fri, 17 Jul
Sat, 18 Jul
Sun, 19 Jul
Mon, 20 Jul
Tue, 21 Jul
Wed, 22 Jul
Thu, 23 Jul
Fri, 24 Jul
Sat, 25 Jul
Sun, 26 Jul
Mon, 27 Jul
Sun
Sunrise
05:50 AM
Sunset
09:05 PM
Moon
Moonrise
05:20 AM
Moonset
09:32 PM
Moon Phase
New Moon
Illumination
1%
Good
Air quality is satisfactory
PM2.5
5.7 μg/m³
PM10
5.9 μg/m³
Ozone (O₃)
103.0 μg/m³
NO₂
2.5 μg/m³
SO₂
0.5 μg/m³
CO
125.0 μg/m³