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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.(%)
Good
21
5
19
18
40
Good
21
5
16
21
39
Good
21
5
17
18
38
Good
21
5
18
18
42
Good
20
4
19
19
34
Good
21
5
18
18
44
Good
21
5
18
18
39
Moderate
56
15
16
18
40
Good
18
4
19
19
52
Good
21
5
18
18
40
Good
21
5
18
18
38
Good
21
5
18
17
48
Good
21
5
18
18
35
Good
21
5
18
18
44
Good
21
5
18
16
37
Good
38
9
18
15
73
Good
21
5
17
18
42
Good
21
5
18
19
48
Good
21
5
18
18
32
Good
21
5
17
16
37
Good
21
5
17
20
25
Good
21
5
18
19
48
Good
21
5
17
19
38
Good
21
5
18
19
38
Good
21
5
19
16
67
Good
21
5
18
18
42
Good
21
5
18
18
49
Good
21
5
18
19
38
Good
50
12
17
14
72
Good
21
5
17
21
36
Good
21
5
20
20
44
Good
21
5
18
19
33
Good
21
5
19
19
37
Good
21
5
16
21
36
Good
42
10
17
14
86
Good
38
9
17
17
50
Good
17
1
18
19
47
Good
16
1
17
19
47
Good
21
5
20
16
58
Good
21
5
18
18
39
Good
21
5
19
16
58
Good
21
5
17
17
48
Good
21
5
19
18
49
Good
46
11
18
14
84
Good
21
5
17
18
42
Good
21
5
18
19
36
Good
22
4
11
18
32
Good
17
3
3
18
32
Good
46
11
12
18
40

Canada's Metro Cities

Air Quality Index

Calgary City AQI

Calgary

16

temp.7°C
hum.65%
Edmonton City AQI

Edmonton

15

temp.3°C
hum.63%
Halifax City AQI

Halifax

17

temp.13°C
hum.83%
Montreal City AQI

Montreal

16

temp.21°C
hum.42%
Ottawa City AQI

Ottawa

21

temp.21°C
hum.41%
Toronto City AQI

Toronto

21

temp.21°C
hum.35%
Vancouver City AQI

Vancouver

54

temp.11°C
hum.77%
Windsor City AQI

Windsor

48

temp.19°C
hum.31%

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.

Port Alberni, British Columbia

54

Moderate

1xbelow Standard

2.

Sooke, British Columbia

54

Moderate

1xbelow Standard

3.

Trail, British Columbia

54

Moderate

1xbelow Standard

4.

Castlegar, British Columbia

54

Moderate

1xbelow Standard

5.

Richmond, British Columbia

54

Moderate

1xbelow Standard

6.

Squamish, British Columbia

54

Moderate

1xbelow Standard

7.

West Vancouver, British Columbia

54

Moderate

1xbelow Standard

8.

Vernon, British Columbia

54

Moderate

1xbelow Standard

9.

Campbell River, British Columbia

54

Moderate

1xbelow Standard

10.

Kamloops, British Columbia

54

Moderate

1xbelow Standard

Last Updated: 26 Sept 2026, 05:20 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.

Seattle's Air Turned Sharply in Early August 2026

Seattle's Air Turned Sharply in Early August 2026

2 Sept 2026AQI Newsroom
Boston's Air Stayed Clean This Summer — But Not Always

Boston's Air Stayed Clean This Summer — But Not Always

2 Sept 2026AQI Newsroom
The Night a Wall of Dust Swallowed Phoenix: What 1,520 Air Quality Readings Reveal About Arizona's Air

The Night a Wall of Dust Swallowed Phoenix: What 1,520 Air Quality Readings Reveal About Arizona's Air

24 Aug 2026Gyane Haobijam
Phoenix Air Quality Swings: Dust Spikes Amid a Calm Summer

Phoenix Air Quality Swings: Dust Spikes Amid a Calm Summer

24 Aug 2026AQI Newsroom
Philadelphia's Air Quality Climbed to a Late-Summer Peak in August 2026

Philadelphia's Air Quality Climbed to a Late-Summer Peak in August 2026

24 Aug 2026AQI Newsroom
Dallas Air Cleared Sharply Through Summer 2026

Dallas Air Cleared Sharply Through Summer 2026

24 Aug 2026AQI Newsroom
New York's Air Swung From Clean to Unhealthy in February 2026

New York's Air Swung From Clean to Unhealthy in February 2026

18 Aug 2026AQI Newsroom
Los Angeles Air Held Steady Then Cleared Through August 2026

Los Angeles Air Held Steady Then Cleared Through August 2026

18 Aug 2026AQI Newsroom
Chicago's Air Cleaned Up Fast — Here's What the Numbers Show

Chicago's Air Cleaned Up Fast — Here's What the Numbers Show

18 Aug 2026AQI Newsroom
Houston's Air Quality Quietly Improved Over Late July–August 2026

Houston's Air Quality Quietly Improved Over Late July–August 2026

18 Aug 2026AQI Newsroom
World Top 10 Hottest Cities Are All in India Again - May 2026

World Top 10 Hottest Cities Are All in India Again - May 2026

4 Jun 2026Gyane Haobijam
Delhi Air Quality 2026 vs 6-Year Historical PM2.5 Data

Delhi Air Quality 2026 vs 6-Year Historical PM2.5 Data

2 Jun 2026Gyane Haobijam
What 17 Years of Delhi Temperature Data Reveal About May's Heatwave Escalation

What 17 Years of Delhi Temperature Data Reveal About May's Heatwave Escalation

27 May 2026AQI Team
World Top Hottest Cities Belong to India - April 2026

World Top Hottest Cities Belong to India - April 2026

28 Apr 2026Gyane Haobijam
Construction Air Pollution: The Invisible Hazard Reshaping India's Urban Air

Construction Air Pollution: The Invisible Hazard Reshaping India's Urban Air

27 Mar 2026Gyane Haobijam
Kitchen Air Pollution: How Cooking Can Spike Your Indoor AQI

Kitchen Air Pollution: How Cooking Can Spike Your Indoor AQI

17 Mar 2026Gyane Haobijam
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

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

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2 Feb 2026Gyane Haobijam
Prana Air Logo

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
Prana Air Logo

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