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Air quality in Ontario

Air quality index (AQI⁺) and PM2.5 air pollution in Ontario • 04:09, Oct 07

Government of Ontario, Ministry of the EnvironmentOklahoma Department of Environmental Quality AnonymousJim GuilletPiéEVCO**Chris FournierHamilton Air Monitoring Network - HAMNGraydonMark OberemkSouth RichvaleMC2025Stacey SchacterstevepaulquinnBelltown - Oakley AveAmy CuriousMeKevin DamenNichols FamilyAnonymousElectric Vehicle Council of OttawaCSA HamiltonianMikoAirJayDeeVBbsummAnonymous DGEC - GreensvilleSlyyyMinistry of the Environment and the Fight against Climate ChangePaulAnonymousSteven RichierandalljhowardARTSean StewartJackBBriarwood Ave. Matt WojtowiczDataforge CanadaMichiruBradley SangerSWWildflower Bee Farm Ontario and Nova ScotiaBijanTimothy DresserBBT Batteries Ltd.Eric SteinLara TCaptain Benjamin WillardAnonymousHaig BlvdDave McKeeCanadian Air and Precipitation Monitoring NetworkPierreKatwyks on the RiverMeJpSS WepplerAnonymousPeter CornelisseMitch LGregMattAnonymous contributor
1 stations sponsored by The Foundation for Clean Air
Government of Ontario, Ministry of the EnvironmentOklahoma Department of Environmental Quality AnonymousJim GuilletPiéEVCO**Chris FournierHamilton Air Monitoring Network - HAMNGraydonMark OberemkSouth RichvaleMC2025Stacey SchacterstevepaulquinnBelltown - Oakley AveAmy CuriousMeKevin DamenNichols FamilyAnonymousElectric Vehicle Council of OttawaCSA HamiltonianMikoAirJayDeeVBbsummAnonymous DGEC - GreensvilleSlyyyMinistry of the Environment and the Fight against Climate ChangePaulAnonymousSteven RichierandalljhowardARTSean StewartJackBBriarwood Ave. Matt WojtowiczDataforge CanadaMichiruBradley SangerSWWildflower Bee Farm Ontario and Nova ScotiaBijanTimothy DresserBBT Batteries Ltd.Eric SteinLara TCaptain Benjamin WillardAnonymousHaig BlvdDave McKeeCanadian Air and Precipitation Monitoring NetworkPierreKatwyks on the RiverMeJpSS WepplerAnonymousPeter CornelisseMitch LGregMattAnonymous contributor
1 stations sponsored by The Foundation for Clean Air

Live most polluted city ranking

Real-time Ontario most polluted city ranking

#CitiesAQI⁺ US
1
The national flag of Canada

Port Stanley

40

2
The national flag of Canada

Sault Ste. Marie

39

3
The national flag of Canada

Tiverton

37

4
The national flag of Canada

Greater Sudbury

36

5
The national flag of Canada

Parry Sound

36

6
The national flag of Canada

Chatham

32

7
The national flag of Canada

Hawkesville

32

8
The national flag of Canada

North Bay

32

9
The national flag of Canada

Wellington County

32

10
The national flag of Canada

Egbert

31

Live cleanest city ranking

Real-time Ontario cleanest city ranking

#CitiesAQI⁺ US
1
The national flag of Canada

North York

0

2
The national flag of Canada

Breslau

1

3
The national flag of Canada

East York

1

4
The national flag of Canada

Richmond Hill

1

5
The national flag of Canada

Selwyn

1

6
The national flag of Canada

Tobermory

1

7
The national flag of Canada

Kasabonika

2

8
The national flag of Canada

Lindsay

2

9
The national flag of Canada

Red Lake

2

10
The national flag of Canada

South Huron

4

Wildfires in Ontario

Real-time information

Active fires

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Forest fire.
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Dry grass burning.
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Wildfire Map Spotlight: Bouquet Fire, California

Which is the most polluted city in Ontario?