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Air quality in Ontario

Air quality index (AQI⁺) and PM2.5 air pollution in Ontario • 23:18, Oct 30

Government of Ontario, Ministry of the EnvironmentOklahoma Department of Environmental Quality AnonymousJim GuilletNational Air Pollution Surveillance ProgramPiéEVCO**Chris Fournier@airqualitybrampton & airqualitybrampton@gmail.comHamilton Air Monitoring Network - HAMNMark OberemkGraydonSouth RichvaleMC2025Stacey SchacterstevepaulquinnBelltown - Oakley AveMeAmy CuriousKevin DamenNichols FamilyAnonymousElectric Vehicle Council of OttawaCSA HamiltonianMikoAirJayDeeVBbsummDGEC - GreensvilleAnonymous SlyyyMinistry of the Environment and the Fight against Climate ChangePaulAnonymousSteven RichierandalljhowardARTSean StewartJackBBriarwood Ave. Matt WojtowiczDataforge CanadaBradley SangerSWMichiruWildflower Bee Farm Ontario and Nova ScotiaBijanTimothy DresserBBT Batteries Ltd.Eric SteinCaptain Benjamin WillardLara TAnonymousHaig BlvdDave McKeeCanadian Air and Precipitation Monitoring NetworkKatwyks on the RiverPierreJpSMeS WepplerAnonymousMitch LPeter CornelisseGregMattAnonymous contributor
1 stations sponsored by The Foundation for Clean Air
Government of Ontario, Ministry of the EnvironmentOklahoma Department of Environmental Quality AnonymousJim GuilletNational Air Pollution Surveillance ProgramPiéEVCO**Chris Fournier@airqualitybrampton & airqualitybrampton@gmail.comHamilton Air Monitoring Network - HAMNMark OberemkGraydonSouth RichvaleMC2025Stacey SchacterstevepaulquinnBelltown - Oakley AveMeAmy CuriousKevin DamenNichols FamilyAnonymousElectric Vehicle Council of OttawaCSA HamiltonianMikoAirJayDeeVBbsummDGEC - GreensvilleAnonymous SlyyyMinistry of the Environment and the Fight against Climate ChangePaulAnonymousSteven RichierandalljhowardARTSean StewartJackBBriarwood Ave. Matt WojtowiczDataforge CanadaBradley SangerSWMichiruWildflower Bee Farm Ontario and Nova ScotiaBijanTimothy DresserBBT Batteries Ltd.Eric SteinCaptain Benjamin WillardLara TAnonymousHaig BlvdDave McKeeCanadian Air and Precipitation Monitoring NetworkKatwyks on the RiverPierreJpSMeS WepplerAnonymousMitch LPeter CornelisseGregMattAnonymous 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

Windsor

43

2
The national flag of Canada

Oakville

41

3
The national flag of Canada

Thunder Bay

39

4
The national flag of Canada

Amherstburg

33

5
The national flag of Canada

Chatham

31

6
The national flag of Canada

Hawkesville

29

7
The national flag of Canada

Sault Ste. Marie

29

8
The national flag of Canada

Kitchener

28

9
The national flag of Canada

Ottawa

28

10
The national flag of Canada

Brantford

27

Live cleanest city ranking

Real-time Ontario cleanest city ranking

#CitiesAQI⁺ US
1
The national flag of Canada

Breslau

0

2
The national flag of Canada

Buckhorn

0

3
The national flag of Canada

Collingwood

0

4
The national flag of Canada

Embrun

0

5
The national flag of Canada

Etobicoke

0

6
The national flag of Canada

Hawkesbury

0

7
The national flag of Canada

Merrickville-Wolford

0

8
The national flag of Canada

Sioux Narrows

0

9
The national flag of Canada

Willowdale

0

10
The national flag of Canada

Kasabonika

1

Wildfires in Ontario

Real-time information

Active fires

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Aerial view of multiple houses covered in haze.
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China Air Quality Alert

Small group of people cycling in morning smog.
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India Air Quality Alert

Polluted skies of Almaty.
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Which is the most polluted city in Ontario?