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Air quality in Ontario

Air quality index (AQI⁺) and PM2.5 air pollution in Ontario • 14:22, Nov 15

Government of Ontario, Ministry of the EnvironmentOklahoma Department of Environmental Quality AnonymousJim GuilletPiéEVCOChris Fournier**@airqualitybrampton & airqualitybrampton@gmail.comMark OberemkGraydonSouth RichvaleHamilton Air Monitoring Network - HAMNMC2025Stacey SchacterstevepaulquinnBelltown - Oakley AveMeAmy CuriousKevin DamenNichols FamilyAnonymousElectric Vehicle Council of OttawaCSA HamiltonianMikoAirJayDeeVBbsummAnonymous DGEC - GreensvilleSlyyyMinistry of the Environment and the Fight against Climate ChangeAnonymousSteven RichierandalljhowardARTJackBBriarwood Ave. Matt WojtowiczDataforge CanadaSWBradley SangerBijanMichiruWildflower Bee Farm Ontario and Nova ScotiaC McKTimothy DresserBBT Batteries Ltd.Eric SteinCaptain Benjamin WillardLara TAnonymousHaig BlvdDave McKeeCanadian Air and Precipitation Monitoring NetworkJpSKatwyks on the RiverPierreS WepplerMeMitch LPeter CornelisseAnonymousGregMattKaren-Ann XavierAnonymous contributor
1 stations sponsored by The Foundation for Clean Air
Government of Ontario, Ministry of the EnvironmentOklahoma Department of Environmental Quality AnonymousJim GuilletPiéEVCOChris Fournier**@airqualitybrampton & airqualitybrampton@gmail.comMark OberemkGraydonSouth RichvaleHamilton Air Monitoring Network - HAMNMC2025Stacey SchacterstevepaulquinnBelltown - Oakley AveMeAmy CuriousKevin DamenNichols FamilyAnonymousElectric Vehicle Council of OttawaCSA HamiltonianMikoAirJayDeeVBbsummAnonymous DGEC - GreensvilleSlyyyMinistry of the Environment and the Fight against Climate ChangeAnonymousSteven RichierandalljhowardARTJackBBriarwood Ave. Matt WojtowiczDataforge CanadaSWBradley SangerBijanMichiruWildflower Bee Farm Ontario and Nova ScotiaC McKTimothy DresserBBT Batteries Ltd.Eric SteinCaptain Benjamin WillardLara TAnonymousHaig BlvdDave McKeeCanadian Air and Precipitation Monitoring NetworkJpSKatwyks on the RiverPierreS WepplerMeMitch LPeter CornelisseAnonymousGregMattKaren-Ann XavierAnonymous 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

Oshawa

58

2
The national flag of Canada

Renfrew

45

3
The national flag of Canada

Dorchester

43

4
The national flag of Canada

Kenora

35

5
The national flag of Canada

Brantford

33

6
The national flag of Canada

Larder Lake

33

7
The national flag of Canada

Grand Bend

32

8
The national flag of Canada

Burlington

31

9
The national flag of Canada

Hamilton

31

10
The national flag of Canada

Milton

31

Live cleanest city ranking

Real-time Ontario cleanest city ranking

#CitiesAQI⁺ US
1
The national flag of Canada

Cobourg

0

2
The national flag of Canada

Coldwater

0

3
The national flag of Canada

Hawkesville

0

4
The national flag of Canada

Pickering

0

5
The national flag of Canada

Richmond Hill

0

6
The national flag of Canada

Brockville

1

7
The national flag of Canada

Embrun

1

8
The national flag of Canada

Etobicoke

2

9
The national flag of Canada

Sheguiandah

2

10
The national flag of Canada

Nepean

5

Wildfires in Ontario

Real-time information

Active fires

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