Ontario Air Quality Index (AQI) | Air Pollution
Real-time PM2.5, PM10 air pollution level in Canada
Last Updated: 1 second ago (Local Time)
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Major Air Pollutants
Ontario
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AQI Graph
Historical Air Quality Data
Ontario
Download 2024 Annual Data
World Air Quality Report
Ontario's Cities
Real-time Air Pollution Level
Canada's Metro Cities
Air Quality Index
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.
Prevent 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.
Wellington, Canada
2.
Oakbank, Canada
3.
Rosser, Canada
4.
Windsor, Canada
5.
Chatham, Canada
6.
Squamish, Canada
7.
Sparwood, Canada
8.
Olds, Canada
9.
Calgary, Canada
10.
James River Bridge, Canada
Last Updated: 25 May 2025, 10:57 AM
AQI City RankingsAir Quality Solutions For Ontario
Explore the solutions of air quality monitoring & clean air.
Here are some applications that you can go through to find out the solutions.
Ontario's AQI Data Analytics Solutions
Air quality data monitoring platforms
Mobile App
Smart TV App
Web Dashboard
API
Widgets
Empower Your Decisions with Reliable Data
Your area’s real-time data with detailed parameters.
Personalized health advice as per current AQI.
Analytical data to identify trends and conditions.
Connect and control your air quality devices.
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 17 (Good). This was last updated 1 second ago (Local Time).
When was the best AQI level in Ontario in the last 24 hours?
The best AQI level was 12 (Good) at 8:09 AM, May 24, 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 20 (Good) at 4:09 AM (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 14.333333333333334 .
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.
Prana Sense
Air Quality Monitor
Air Quality Index depicts the extent of air pollution at a particular location.
Pocket PM
Air Quality Monitor
Know the air quality around you wherever you are with the Pocket monitor to get instant air quality insights.
Cair +
Indoor Air Quality Monitor
Track indoor air quality with advanced connectivity and portability for real-time air quality data.
