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Ontario Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in Ontario

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Check the air quality level of thecities in Ontario

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Ontario

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Ontario's Cities

Real-time Air Pollution Level

cities
Status
AQI (US)
PM₂.₅(µg/m³)
PM₁₀(µg/m³)
Temp.(°C)
Humi.(%)
Moderate
63
18
20
9
69
Moderate
54
14
19
10
70
Moderate
58
16
18
10
71
Moderate
64
18
20
11
67
Good
38
10
17
11
62
Moderate
57
16
18
12
60
Good
46
11
16
13
65
Moderate
58
16
17
11
70
Good
21
5
19
9
92
Moderate
63
18
20
9
69
Moderate
52
13
18
10
71
Moderate
63
18
19
9
71
Moderate
60
17
19
10
63
Moderate
62
17
18
12
60
Moderate
63
18
18
8
77
Good
29
7
19
14
93
Moderate
60
17
19
10
86
Good
46
11
20
11
78
Moderate
60
17
17
10
63
Moderate
63
18
18
8
77
Moderate
55
14
16
11
63
Good
46
11
19
11
78
Moderate
63
18
18
12
60
Moderate
60
17
18
12
60
Moderate
52
13
19
13
92
Moderate
62
18
19
10
70
Moderate
60
17
18
8
83
Moderate
63
18
18
12
60
Good
33
8
16
13
97
Moderate
60
17
18
11
62
Good
23
6
20
10
82
Moderate
60
17
18
8
74
Good
46
11
20
9
76
Moderate
63
18
20
9
70
Good
29
7
17
14
88
Moderate
58
16
18
13
78
Good
50
12
19
11
93
Moderate
54
14
17
11
93
Moderate
56
15
17
15
63
Good
33
8
16
13
65
Moderate
56
15
17
15
63
Good
21
5
18
9
71
Moderate
52
13
19
7
88
Good
23
6
18
14
92
Good
46
11
19
10
86
Moderate
63
18
19
13
54
Good
41
10
10
10
63
Good
22
4
4
10
63
Good
42
10
11
12
70

Canada's Metro Cities

Air Quality Index

Calgary City AQI

Calgary

41

temp.6°C
hum.78%
Edmonton City AQI

Edmonton

56

temp.0°C
hum.96%
Halifax City AQI

Halifax

17

temp.12°C
hum.71%
Montreal City AQI

Montreal

21

temp.12°C
hum.76%
Ottawa City AQI

Ottawa

21

temp.10°C
hum.82%
Toronto City AQI

Toronto

62

temp.14°C
hum.48%
Vancouver City AQI

Vancouver

46

temp.12°C
hum.73%
Windsor City AQI

Windsor

45

temp.13°C
hum.70%

Most Polluted Cities 2026

Canada

Analyze the real-time most air polluted cities in the country.

Most Polluted Cities Live Ranking 2026
World's Most PollutedCity Rankings (2025)
World's Most PollutedCountry Rankings(2025)
RankCityAQI Status

Standard Value

Follow

1.

Brampton, Ontario

64

Moderate

1xabove Standard

2.

Toronto, Ontario

63

Moderate

1xabove Standard

3.

Oakville, Ontario

63

Moderate

1xabove Standard

4.

Peterborough, Ontario

63

Moderate

1xabove Standard

5.

Newmarket, Ontario

62

Moderate

1xabove Standard

6.

Hamilton, Ontario

62

Moderate

1xabove Standard

7.

Estevan, Saskatchewan

61

Moderate

1xabove Standard

8.

Mississauga, Ontario

60

Moderate

1xabove Standard

9.

Oshawa, Ontario

60

Moderate

1xabove Standard

10.

Brandon, Manitoba

60

Moderate

1xabove Standard

Last Updated: 26 Sept 2026, 12:06 PM

AQI City Rankings

Air 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.

Air Quality Monitor

Air Quality Monitor

Monitor the air quality
Air Quality Sensors

Air Quality Sensors

Sensors to measure the air quality
Fresh Air Machine

Fresh Air Machine

Clean the air you breathe
Car Cabin Filter

Car Cabin Filter

Purify the air in your car
N95 Mask

N95 Mask

Shield yourself from pollution
Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solution For Offices

A complete solution for air quality monitoring, data analysis, and fresh air solutions in workplaces prioritizing employee's health and productivity.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions For Smart City

Prana Air smart city project provides air quality monitors, drones, outdoor air purifiers, and data dashboards solution to improve air quality.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions for Schools | Institutes

Prana Air provides the air quality solutions for schools by air monitoring & fresh air machine that help the students to breather clean air.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions For Hotels

Prana Air air quality solutions are suited for hotel businesses. The occupancy of hotels is the main reasons for bad air quality.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions for Restaurants

Prana Air has the air quality solutions for restaurant, cafes, and gives you the power to know what your customers and staff breathe.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions for RMC Plants

Prana Air provides air quality monitoring solutions for RMC plants. Improve compliance, protect workers and community, and reduce emissions.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions for Fitness Center

Prana Air provides the air quality solutions of pollution monitoring and fresh air for fitness center - gym.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions for Parking Lot

A complete solution for air monitoring, data analysis, and fresh air solutions for enclosed car parking areas and car lots.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions for Retail Stores

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets

Prana Air provides the air quality solutions for airport. Gathering of many passengers is the main reasons of bad air quality in airport.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions For Construction Sites

Prana Air offers air quality monitoring solutions for construction sites with data cloud storage, web-dashboard, mobile apps, TV display.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions For Hospitals

Prana Air provides air quality monitoring and fresh air solutions for hospitals to ensure clean and healthy indoor air.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions For Washroom | Bathroom

Improve washroom and bathroom air quality with Prana Air air quality monitoring devices and fresh air machine. Breathe easy and stay healthy.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions for Banks

Prana Air provides air quality solutions of pollution monitoring and fresh air for banks and financial institutions.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions for Cinema

Air quality solutions for cinema halls or theatres will help the customers to get the good experience, comfort and breathe clean air.

Prana Air offers the solutions of air quality monitoring and clean air machine for Ontario

Air Quality Solutions For Real Estates

Prana Air provides the air quality solutions of pollution monitoring and fresh air for real estates - residential and commercial.

Ontario's AQI Data Analytics Solutions

Air quality data monitoring platforms

Mobile AppMobile App
Smart TV AppSmart TV App
Web DashboardWeb Dashboard
APIAPI
WidgetsWidgets

Recent AQI Blogs

Read the latest news

Here are some latest blogs that you can go through to find out more air pollution.

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Prana Sense

Air Quality Monitor

Air Quality Index depicts the extent of air pollution at a particular location.

Prana Air Ambient Air Quality Monitor - most realiable outdoor aqi monitoringPrana Air Ambient Air Quality Monitor - most realiable outdoor aqi monitoring
Prana Air Logo

Pocket PM

Air Quality Monitor

Know the air quality around you wherever you are with the Pocket monitor to get instant air quality insights.

Prana Air Pocket PM2.5 Air Quality Monitor - portable, smallest and afforablePrana Air Pocket PM2.5 Air Quality Monitor - portable, smallest and afforable
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Cair +

Indoor Air Quality Monitor

Track indoor air quality with advanced connectivity and portability for real-time air quality data.

Prana Air Cair+ Indoor Air Quality Monitor for home, office or institutesPrana Air Cair+ Indoor Air Quality Monitor for home, office or institutes