Current Air Quality
Today
12/4
Fair
The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.
Based on Current Pollutants
Learn more at
PM 10
Fair
Particulate Matter are
inhalable pollutant particles with a diameter less than 10 micrometers.
Particles that are larger than 2.5 micrometers can be deposited in airways, resulting in
health issues. Exposure can result in eye and throat irritation, coughing or difficulty
breathing, and aggravated asthma. More frequent and excessive exposure can result in more
serious health effects.
...more
PM 2.5
Fair
Fine Particulate Matter are
inhalable pollutant particles with a diameter less than
2.5 micrometers that can enter the lungs and bloodstream, resulting in serious health issues.
The most severe impacts are on the lungs and heart. Exposure can result in coughing or
difficulty breathing, aggravated asthma, and the development of chronic respiratory disease.
...more
NO 2
Fair
Breathing in high levels of Nitrogen Dioxide increases the risk of
respiratory problems. Coughing and difficulty breathing are common and
more serious health issues such as respiratory infections can occur with longer exposure.
...more
O 3
Excellent
Ground-level Ozone can aggravate existing respiratory
diseases and also lead to throat irritation, headaches, and chest pain.
...more
Toronto Current Air Quality
24-Hour Air Quality Forecast
Daily Forecast
Today
12/4
Fair
The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.
Thursday
12/5
Fair
The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.
Friday
12/6
Fair
The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.
Saturday
12/7
Poor
The air has reached a high level of pollution and is unhealthy for sensitive groups. Reduce time spent outside if you are feeling symptoms such as difficulty breathing or throat irritation.