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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

Ontario's Cities

Real-time Air Pollution Level

cities
Status
AQI (US)
PM₂.₅(µg/m³)
PM₁₀(µg/m³)
Temp.(°C)
Humi.(%)
Moderate
65
19
64
12
102
Moderate
78
25
26
13
88
Moderate
65
19
26
11
94
Moderate
54
16
28
14
67
Good
44
10
13
10
94
Good
42
10
24
11
98
Moderate
52
13
15
12
94
Moderate
67
20
28
14
89
Moderate
54
14
25
13
90
Moderate
69
21
55
8
98
Moderate
65
19
27
11
94
Moderate
75
24
27
11
100
Good
33
8
14
9
100
Good
25
5
27
14
77
Moderate
52
3
58
10
85
Moderate
80
26
37
22
78
Moderate
56
15
15
11
94
Moderate
73
23
24
13
88
Good
29
7
15
9
100
Moderate
82
27
60
10
85
Moderate
58
16
14
10
100
Moderate
67
20
25
13
88
Good
42
10
26
14
67
Moderate
74
24
26
14
67
Moderate
78
25
26
14
92
Moderate
53
5
61
8
98
Moderate
70
21
47
12
94
Good
50
14
26
11
98
Moderate
95
33
36
20
82
Moderate
76
24
26
13
82
Good
22
5
24
12
88
Moderate
55
14
62
13
98
Moderate
73
23
26
13
81
Moderate
71
22
24
7
100
Poor
104
37
39
18
95
Moderate
67
20
27
14
89
Moderate
58
16
27
17
86
Moderate
65
19
26
17
86
Good
29
7
27
17
84
Moderate
69
21
15
12
94
Good
29
7
27
17
84
Moderate
75
24
26
11
100
Moderate
67
20
23
11
94
Moderate
97
34
40
15
100
Moderate
56
15
15
11
94
Moderate
52
14
26
14
67
Good
38
8
14
9
100
Moderate
71
22
35
16
83

Canada's Metro Cities

Air Quality Index

Calgary City AQI

Calgary

51

temp.14°C
hum.82%
Edmonton City AQI

Edmonton

62

temp.16°C
hum.90%
Halifax City AQI

Halifax

25

temp.14°C
hum.77%
Montreal City AQI

Montreal

53

temp.17°C
hum.77%
Ottawa City AQI

Ottawa

46

temp.13°C
hum.82%
Toronto City AQI

Toronto

55

temp.14°C
hum.77%
Windsor City AQI

Windsor

71

temp.16°C
hum.86%
Winnipeg City AQI

Winnipeg

49

temp.21°C
hum.71%

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.

Thunder Bay, Ontario

97

Moderate

2xabove Standard

2.

Grande Prairie, Alberta

87

Moderate

2xabove Standard

3.

Fort McMurray, Alberta

84

Moderate

2xabove Standard

4.

Edson, Alberta

79

Moderate

2xabove Standard

5.

Fort McKay, Alberta

78

Moderate

2xabove Standard

6.

Wood Buffalo, Alberta

78

Moderate

2xabove Standard

7.

Belleville, Ontario

78

Moderate

2xabove Standard

8.

Yellowknife, Northwest Territories

76

Moderate

2xabove Standard

9.

Conklin, Alberta

76

Moderate

2xabove Standard

10.

Oshawa, Ontario

76

Moderate

2xabove Standard

Last Updated: 20 Jul 2026, 11:09 AM

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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17 Mar 2026Gyane Haobijam
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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