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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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Join AQI.IN's Community Air Quality Monitoring

Join AQI.IN's Community Air Quality Monitoring

Winter vs Summer Air: Why Air Pollution Behaves So Differently Across Seasons

Winter vs Summer Air: Why Air Pollution Behaves So Differently Across Seasons

Why AQI Standards Vary Across the World – And Why Air Quality Index Matters More Than Ever

Why AQI Standards Vary Across the World – And Why Air Quality Index Matters More Than Ever

Download 2024 Annual Data

World Air Quality Report

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Ontario's Cities

Real-time Air Pollution Level

Location
Status
AQI (US)
PM2.5(µg/m³)
PM10(µg/m³)
Temp.(°C)
Humi.(%)
Poor
121
44
60
-1.7
100
Poor
118
42
61
1.3
100
Poor
121
44
59
-2.4
107
Poor
120
44
59
1.1
86
Poor
115
42
51
2.3
100
Poor
118
43
60
3.1
91
Poor
109
39
56
1.2
100
Poor
120
44
60
-1.5
94
Good
33
0
36
-0.6
85
Poor
121
44
61
-2.7
99
Poor
121
44
60
-2.4
107
Poor
121
44
59
-6.9
93
Poor
121
44
58
0
100
Poor
120
43
59
3.1
91
Poor
119
43
60
-2.7
100
Moderate
73
23
28
-10.9
78
Poor
116
42
57
-2.4
107
Good
33
0
36
2.1
100
Poor
109
39
58
0.1
100
Poor
119
43
59
-2.7
100
Poor
114
41
58
1.2
100
Good
32
0
35
1.1
100
Poor
116
42
58
2.9
89
Poor
121
44
60
1.1
86
Poor
116
42
60
-5.5
100
Poor
118
42
61
-2.7
99
Poor
118
43
60
-0.7
100
Poor
116
42
60
3.1
91
Moderate
73
23
29
-8.7
100
Poor
120
44
60
1.1
100
Good
31
0
33
-1.8
93
Poor
118
43
59
-2.1
94
Poor
116
42
59
-1.6
93
Poor
120
44
59
1.2
100
Moderate
73
23
28
-14.9
78
Poor
119
43
61
1.3
93
Poor
118
43
60
-1.7
100
Poor
116
42
61
-1.7
100
Poor
121
44
62
3.2
100
Poor
104
37
58
1.2
100
Poor
119
43
62
3.2
100
Poor
116
42
61
-6.9
93
Poor
116
42
58
-8
100
Moderate
73
23
28
-8.7
100
Poor
121
44
55
-2.3
99
Poor
118
43
60
2.3
93
Poor
116
42
58
0
100
Poor
119
43
60
1.7
100

Canada's Metro Cities

Air Quality Index

Edmonton City AQI

Edmonton

49

temp.-17°C
hum.81%
Halifax City AQI

Halifax

49

temp.-2°C
hum.74%
Montreal City AQI

Montreal

46

temp.1°C
hum.69%
Ottawa City AQI

Ottawa

40

temp.-1°C
hum.86%
Toronto City AQI

Toronto

41

temp.2°C
hum.93%
Vancouver City AQI

Vancouver

50

temp.2°C
hum.87%
Windsor City AQI

Windsor

28

temp.3°C
hum.100%
Winnipeg City AQI

Winnipeg

43

temp.-9°C
hum.76%

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.

London, Canada

114
Poor
8xabove Standard

2.

Waterloo, Canada

114
Poor
8xabove Standard

3.

Kincardine, Canada

109
Poor
7xabove Standard

4.

Tiverton, Canada

109
Poor
7xabove Standard

5.

Kitchener, Canada

109
Poor
7xabove Standard

6.

Brantford, Canada

109
Poor
7xabove Standard

7.

Guelph, Canada

106
Poor
7xabove Standard

8.

St Thomas, Canada

106
Poor
7xabove Standard

9.

Central Elgin, Canada

104
Poor
7xabove Standard

10.

Canmore, Canada

54
Moderate
4xabove Standard

Last Updated: 17 Feb 2026, 02:56 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
air quality solutions for offices 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.

air quality solutions for smart-city 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.

air quality solutions for institutes 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.

air quality solutions for hotels 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.

air quality solutions for restaurants 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.

air quality solutions for rmc-plants 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.

air quality solutions for fitness-center 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.

air quality solutions for parking-lot 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.

air quality solutions for retail-stores 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.

air quality solutions for airport 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.

air quality solutions for construction-sites 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.

air quality solutions for hospitals 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.

air quality solutions for bathroom 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.

air quality solutions for banks for Ontario

Air Quality Solutions for Banks

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

air quality solutions for cinema 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.

air quality solutions for real-estates 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
aqi air quality app for Ontario
Mobile App

Empower Your Decisions with Reliable Data

Get it onApp Store
Get it onGoogle Play
Your area’s real-time data with detailed parameters.

Your area’s real-time data with detailed parameters.

Personalized health advice as per current AQI.

Personalized health advice as per current AQI.

Analytical data to identify trends and conditions.

Analytical data to identify trends and conditions.

Connect and control your air quality devices.

Connect and control your air quality devices.

Recent AQI Blogs

Read the latest news

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

Mumbai Air Quality Comparison of 2025 Vs 2026 (Jan-Feb)

Mumbai Air Quality Comparison of 2025 Vs 2026 (Jan-Feb)

14 Feb 2026Gyane Haobijam
Why AQI Standards Vary Across the World – And Why Air Quality Index Matters More Than Ever

Why AQI Standards Vary Across the World – And Why Air Quality Index Matters More Than Ever

12 Feb 2026Navya
Why Winter Suffocates and Monsoon Saves Delhi Air Quality 2025?

Why Winter Suffocates and Monsoon Saves Delhi Air Quality 2025?

2 Feb 2026Gyane Haobijam
Winter vs Summer Air: Why Air Pollution Behaves So Differently Across Seasons

Winter vs Summer Air: Why Air Pollution Behaves So Differently Across Seasons

1 Feb 2026Gyane Haobijam
Shocking Air Quality Data Reveals Hazardous Pollution in Baramulla’s Khawaja Bagh, Shattering the ‘Clean Air’ Myth of Jammu & Kashmir

Shocking Air Quality Data Reveals Hazardous Pollution in Baramulla’s Khawaja Bagh, Shattering the ‘Clean Air’ Myth of Jammu & Kashmir

29 Jan 2026Gyane Haobijam
What hourly AQI reveals : Rainfall’s Limited Impact on Delhi NCR’s Air Quality

What hourly AQI reveals : Rainfall’s Limited Impact on Delhi NCR’s Air Quality

28 Jan 2026Navya
Delhi’s Air in 2025: A Year Where Clean Days Never Arrived

Delhi’s Air in 2025: A Year Where Clean Days Never Arrived

26 Dec 2025Navya
Delhi Engulfed in Fog and Toxic Air: Dense Fog Reduces Visibility as AQI Remains Severe, IMD Issues Yellow Alert

Delhi Engulfed in Fog and Toxic Air: Dense Fog Reduces Visibility as AQI Remains Severe, IMD Issues Yellow Alert

19 Dec 2025Navya
GRAP Stage 4 Enforced in Delhi as AQI Touches 600+: Smog and Weather Worsen Air Quality

GRAP Stage 4 Enforced in Delhi as AQI Touches 600+: Smog and Weather Worsen Air Quality

16 Dec 2025Navya
Sudden Smog Rise Across Delhi NCR Linked to Low Wind and Temperature Inversion

Sudden Smog Rise Across Delhi NCR Linked to Low Wind and Temperature Inversion

13 Dec 2025Anwesha
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Prana Sense

Air Quality Monitor

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

Prana Sense Air Quality MonitorPrana Sense Air Quality Monitor
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Pocket PM

Air Quality Monitor

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

Pocket PM Air Quality MonitorPocket PM Air Quality Monitor
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Cair +

Indoor Air Quality Monitor

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

Cair + Indoor Air Quality MonitorCair + Indoor Air Quality Monitor