Live

Ontario Air Quality Index (AQI) | Air Pollution

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

Last Updated: 12 minutes ago (Local Time)

location image
Live AQI
14
Air Quality is
Good
pm10 :  13 µg/m³
PM2.5 :  2 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi good level in Ontario
sunny

9 °C

Sunny
Humidity
Humidity77 %

Wind Speed
Wind Speed18 km/h

UV Index
UV Index0
Last Updated: 12 minutes ago (Local Time)


Map

Ontario

Major Air Pollutants

Ontario

AQI Graph

Historical Air Quality Data

Ontario

Ontario

Download 2024 Annual Data

World Air Quality Report

Globe

Ontario's Cities

Real-time Air Pollution Level

Location
Status
AQI
PM2.5(µg/m³)
PM10(µg/m³)
Temp.(°C)
Humi.(%)
Barrie
Good
11
2
13
7
83
Belleville
Good
11
2
13
9
70
Bluewater
Good
11
2
13
7
85
Brampton
Good
12
2
13
7
86
Brantford
Good
39
7
14
8
82
Burlington
Good
12
2
13
9
75
Central Elgin
Good
10
2
11
8
81
Chatham
Good
12
2
14
9
81
Cornwall
Good
10
2
11
7
72
Essa
Good
37
7
13
6
84
Grand Bend
Good
11
2
13
7
85
Greater Sudbury
Good
12
2
14
1
81
Guelph
Good
11
2
12
6
85
Hamilton
Good
12
2
13
9
78
Huntsville
Good
12
2
13
3
82
Kenora
Good
11
2
13
3
84
Kincardine
Good
37
7
13
7
84
Kingston
Good
11
2
13
8
70
Kitchener
Good
12
2
13
6
86
Lake of Bays
Good
12
2
13
3
82
London
Good
15
2
12
6
87
Loyalist
Good
12
2
13
7
68
Milton
Good
11
2
13
7
82
Mississauga
Good
11
2
13
9
76
Moonbeam
Good
12
2
14
1
84
Newmarket
Good
37
7
13
6
81
North Bay
Good
12
2
14
1
82
Oakville
Good
12
2
13
9
77
Oliver Paipoonge
Good
12
2
14
3
81
Oshawa
Good
12
2
13
8
76
Ottawa
Good
12
2
12
6
75
Parry Sound
Good
11
2
12
5
76
Petawawa
Good
11
2
12
4
83
Peterborough
Good
12
2
13
6
80
Pickle Lake
Good
13
2
13
3
83
Sarnia
Good
17
3
13
8
82
Sault Ste. Marie
Good
12
2
14
1
83
Searchmont
Good
9
2
11
1
83
St Catharines
Good
11
2
13
9
82
St Thomas
Good
12
2
14
7
81
Sudbury
Good
13
2
14
1
77
Temiskaming Shores
Good
12
2
14
1
83
Thunder Bay
Good
13
2
15
1
90
Tiverton
Good
37
7
13
7
84
Toronto
Good
11
2
13
8
78
Waterloo
Good
12
2
13
6
86
Windsor
Good
17
3
14
9
81

Canada's Metro Cities

Air Quality Index

Health Advice For People Living In

Ontario

0Cigarettes per day

Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.

Source:

Berkeley Earth


Solutions for Current AQI

  • Air Purifier
    Air PurifierTurn Off
  • Car Filter
    Car FilterAdvisable
  • N95 Mask
    N95 MaskAdvisable
  • Stay Indoor
    Stay IndoorAdvisable


As per the current AQI, turn off the air purifier.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Ontario

  • asthma due to air pollution in OntarioAsthma
  • heart due to air pollution in OntarioHeart Issues
  • allergy due to air pollution in OntarioAllergies
  • sinus due to air pollution in OntarioSinus
  • flu due to air pollution in OntarioCold/Flu
  • copd due to air pollution in OntarioChronic (COPD)
asthma due to air pollution in Ontario

Low Chances of Asthma

Asthma

Risk of Asthma symptoms is Low when AQI is Good (0-50)

Mild symptoms such as slight wheezing, occasional cough, and minor shortness of breath

Do's :

  • Keep track of air quality to plan outdoor activities safely.

  • Drink water to keep airways moist and reduce irritation.

  • Include non-allergenic fruits and vegetables that support overall lung health, like apples, pears, and spinach.

Don'ts :

  • Skip medications that is prescribed by your doctor.

  • Engage in outdoor activities in early morning during high pollen hours.

Most Polluted Cities 2025

Canada

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

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

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.


Air Quality FAQs

at Ontario

Frequently Asked Questions About Air Quality

What is the current AQI level in Ontario?

The current real-time AQI level in Ontario is 14 (Good). This was last updated 12 minutes ago (Local Time).

When was the best AQI level in Ontario in the last 24 hours?

The best AQI level was 12 (Good) at 7:09 AM (Local Time) during the last 24 hours.

When was the worst AQI level in Ontario in the last 24 hours?

The worst AQI level was 19 (Good) at 10:09 AM, May 18, 2025 (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Ontario during last 24 hours?

The AQI levels in Ontario have been fluctuating throughout the last 24 hours. The levels have increased by highest 19 at 10:09 AM, May 18, 2025 (Local Time), lowest 12 at 7:09 AM (Local Time).

What actions are recommended as per the current AQI level in Ontario?

The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.