Ontario Air Quality Index (AQI) | Air Pollution
Real-time PM2.5, PM10 air pollution level in Canada
Last Updated: 5 seconds ago (Local Time)
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Historical Air Quality Data
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Ontario's Cities
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Health Advice For People Living In
Ontario
0Cigarettes per day
Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.
Source:
Berkeley Earth
Solutions for Current AQI
Air PurifierTurn Off
Car FilterAdvisable
N95 MaskAdvisable
Stay IndoorAdvisable
As per the current AQI, turn off the air purifier.
Get an Air PurifierPrevent Health Problems: Understand Your Risks
Ontario
Asthma
Heart Issues
Allergies
Sinus
Cold/Flu
Chronic (COPD)
Low Chances of Asthma
Asthma
Risk of Asthma symptoms is Low when AQI is Good (0-50)
Mild symptoms such as slight wheezing, occasional cough, and minor shortness of breath
Do's :
Keep track of air quality to plan outdoor activities safely.
Drink water to keep airways moist and reduce irritation.
Include non-allergenic fruits and vegetables that support overall lung health, like apples, pears, and spinach.
Don'ts :
Skip medications that is prescribed by your doctor.
Engage in outdoor activities in early morning during high pollen hours.
Most Polluted Cities 2025
Canada
Analyze the real-time most air polluted cities in the country.
Standard Value
1.
Edmundston, Canada
2.
Edmundston, Canada
3.
Oshawa, Canada
4.
Pickle Lake, Canada
5.
Lethbridge, Canada
6.
Fort Chipewyan, Canada
7.
Guelph, Canada
8.
Waterloo, Canada
9.
Notre Dame du Rosaire, Canada
10.
Kitchener, Canada
Last Updated: 01 Jul 2025, 10:12 AM
AQI City RankingsAir Quality Solutions For Ontario
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Ontario's AQI Data Analytics Solutions
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Air Quality FAQs
at Ontario
Frequently Asked Questions About Air Quality
What is the current AQI level in Ontario?
The current real-time AQI level in Ontario is 35 (Good). This was last updated 5 seconds ago (Local Time).
When was the best AQI level in Ontario in the last 24 hours?
The best AQI level was 34 (Good) at 7:24 AM, Jun 30, 2025 (Local Time) during the last 24 hours.
When was the worst AQI level in Ontario in the last 24 hours?
The worst AQI level was 38 (Good) at 2:09 PM, Jun 30, 2025 (Local Time) during the last 24 hours.
What is the current trend of AQI levels in Ontario during last 24 hours?
The AQI levels in Ontario remained stable over the last 24 hours as around 34.2 .
What actions are recommended as per the current AQI level in Ontario?
The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.
Recent AQI Blogs
Read the latest news
Here are some latest blogs that you can go through to find out more air pollution.
