Primary Pollutant

(AQI)

 Ontario GOOD aqi boy

Ontario Air Quality Index (AQI) Live

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

Last Update: 03 Mar 2024, 11:05am

Ontario GOOD aqi boy Ontario GOOD aqi boy Ontario GOOD aqi boy


Comparative Exposure with Ontario

24 hrs avg AQI

Ontario

Canada
40

Major Air Pollutants in Ontario

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Ontario carbon monoxide icon
48 (CO)

PM2.5

The current PM2.5 concentration in Ontario is ✓below the recommended limit given by the WHO 24 hrs air quality guidelines value.

Ontario - Cities Air Pollution Level

Status AQI AQI-US AQI-IN PM2.5 PM10 Temp Humid
Windsor GOOD 31 31 24 7 0 11 70
Hamilton MODERATE 76 76 40 24 0 6 86
Toronto GOOD 46 46 20 11 0 6 91
Bluewater GOOD 42 42 17 10 0 8 80
Loyalist GOOD 18 18 19 3 0 8 89
Ottawa GOOD 26 26 17 6 0 6 85
St Catharines GOOD 46 46 18 11 0 9 81
Petawawa GOOD 26 26 28 3 0 3 98
Barrie GOOD 29 29 12 7 0 8 88
Belleville GOOD 21 21 23 3 0 7 93
Chatham MODERATE 55 55 14 14 0 4 93
Sudbury GOOD 29 29 23 7 0 1 100
Kincardine MODERATE 57 57 25 15 0 3 100
Sault Ste. Marie GOOD 21 21 23 1 0 4 96
North Bay GOOD 46 46 26 12 0 4 84
Peterborough GOOD 21 21 19 5 0 7 100
Burlington GOOD 25 25 23 6 0 10 76
Cornwall GOOD 46 46 18 11 0 5 96
Huntsville GOOD 18 18 19 3 0 7 81
Guelph GOOD 30 30 32 7 0 10 66
Waterloo GOOD 30 30 32 7 0 9 73
Oshawa GOOD 21 21 22 5 0 3 100
Brantford GOOD 46 46 24 11 0 4 100
London GOOD 46 46 18 11 0 4 97
Oliver Paipoonge MODERATE 55 55 24 14 0 1 93
Newmarket GOOD 38 38 17 9 0 4 99
Oakville GOOD 46 46 18 11 0 4 95
Brampton MODERATE 55 55 16 14 0 5 100
Parry Sound GOOD 46 46 18 11 0 2 99
St Thomas GOOD 38 38 20 9 0 4 97

Weather Conditions in Ontario

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What are the weather and climatic conditions in Ontario?
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Temperature icon
˚C | ˚F

Local Time

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Sunrise
Sunset
06:26 AM
06:26 PM
Wind Speed Icon

Wind speed

33 km/h

UV Index Icon

UV Index

16

Pressure Icon

Pressure

800 mb


Health Advice For Ontario

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How to protect yourself from air pollution around Ontario, Canada?
wear mask icon cross

Wear Mask

Not Required
stay indoors icon cross

Stay Indoor

Not Required
shut opening icon

Windows

Keep Close
use a purifier icon

Use Purifier

Not Required
Family Icon

Family

Allow Outdoor

Ontario Air Quality Forecast



Day

AQI

Weather

Temp.

Today

134

AQI

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Friday

134

AQI

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Saturday

134

AQI

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Sunday

134

AQI

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Monday

134

AQI

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Tuesday

134

AQI

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Wednesday

134

AQI

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Canada - Metro Cities AQI

20
46
AQI (IN)
AQI (US)
6˚C / 91%
21
46
AQI (IN)
AQI (US)
4˚C / 92%
10
27
AQI (IN)
AQI (US)
-18˚C / 69%
8
19
AQI (IN)
AQI (US)
-20˚C / 74%
17
26
AQI (IN)
AQI (US)
6˚C / 85%
4
17
AQI (IN)
AQI (US)
4˚C / 95%
25
30
AQI (IN)
AQI (US)
14˚C / 59%

Historic Air Quality Graph of Ontario

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Best

Oct 1, 2020

Worst

Oct 1, 2020

0

Explore an insightful air pollution data for last 24 hrs, 7 days & 1 month




Comparative Exposure with Ontario

24 hrs avg AQI

Ontario

Canada
40


FAQs of Ontario's Air Quality Index

(Frequently Asked Questions)


Quick answers to some commonly asked questions about the air pollution of Ontario.


The real-time air quality in Ontario is 40 (GOOD) AQI now. This was last updated 5 hours ago .

The current concentration of PM2.5 in Ontario is 10 (µg/m³). The World Health Organisation (WHO) recommends 15 µg/m³ as the threshold concentration of PM2.5 for 24 hrs mean. Currently, the concentration is 0.40 times the recommended limit.

Generally, the air quality at Ontario starts deteriorating in late October. The winters are the worst-hit season in terms of air pollution.

You should wear a good N95 mask when you go outdoor in Ontario until the AQI is improving upto moderate range.

Office going people should avoid personal vehicles and use public transportations or carpooling.

(i) The primary causes of outdoor air pollution are solid, liquid particles called aerosols & gase from vehicles emissions, construction activities, factories, burning stubble & fossil fuels and wildfire, etc.

(ii) Main causes of indoor air pollution are harmful gases from cooking fuels (such as wood, crop wastes, charcoal, coal and dung), damp, mould smoke, chemicals from cleaning materials, etc.

Indoor air pollution in Ontario is as dangerous as outdoor pollution, because the air pollutants come inside the houses or buildings through doors, windows and ventilation.

In Ontario, you must use an air purifier or fresh air machine at home or office indoor and close all the doors, windows and ventilations when the outdoor air quality index (aqi) in Ontario is very high. Proper ventilation is highly recommended only when outdoor air quality is improving and moderate AQI range.

World's Most Polluted Cities & Countries AQI Ranking

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Air Quality Solutions for Ontario

Find out Prana Air's air quality monitors & solutions to fight air pollution in your city.



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Keep a track of Ontario Air Pollution Level On “AQI Air Quality App

Know what you breathe and the quality of air in your city and nearby locations. Real-time AQI, map, weather & fire data, health advice with insightful & analytical dashboards.

aqi air quality mobile app for Ontario
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