Primary Pollutant

(AQI)

 Ontario GOOD aqi boy

Ontario Air Quality Index (AQI)

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

Last Update: 30 May 2023, 03:05am

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


Comparative Exposure with Ontario

24 hrs avg AQI

Ontario

Canada
41

Major Air Pollutants in Ontario

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Ontario carbon monoxide icon
19 (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
Barrie GOOD 50 50 20 12 0 19 30
Belleville GOOD 32 32 35 7 0 18 32
Bluewater GOOD 50 50 29 12 0 16 38
Brampton GOOD 38 38 20 9 0 18 30
Brantford GOOD 46 46 23 11 0 20 32
Burlington MODERATE 68 68 34 20 0 19 27
Chatham GOOD 50 50 33 12 0 19 53
Cornwall GOOD 33 33 20 8 0 20 30
Guelph GOOD 42 42 31 10 0 21 26
Hamilton GOOD 38 38 32 9 0 19 27
Huntsville GOOD 25 25 18 6 0 19 30
Kincardine GOOD 46 46 30 11 0 16 38
London GOOD 50 50 23 12 0 20 32
Loyalist GOOD 35 35 38 7 0 15 51
Mississauga GOOD 33 33 25 8 0 18 30
Newmarket GOOD 35 35 38 8 0 18 27
North Bay GOOD 48 48 32 13 0 21 28
Oakville GOOD 35 35 38 8 0 18 30
Oshawa GOOD 25 25 10 6 0 18 30
Ottawa GOOD 29 29 25 7 0 21 31
Parry Sound GOOD 50 50 28 12 0 16 41
Peterborough GOOD 34 34 37 7 0 19 37
St Catharines MODERATE 55 55 23 14 0 20 32
St Thomas GOOD 42 42 32 10 0 20 32
Sudbury MODERATE 63 63 30 18 0 23 27
Temiskaming Shores GOOD 25 25 18 6 0 20 43
Thunder Bay GOOD 38 38 27 9 0 26 24
Toronto GOOD 37 37 38 7 0 16 43
Waterloo GOOD 42 42 31 10 0 20 22
Windsor GOOD 49 49 29 12 0 21 25

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

38
37
AQI (IN)
AQI (US)
16˚C / 43%
18
39
AQI (IN)
AQI (US)
21˚C / 26%
6
17
AQI (IN)
AQI (US)
23˚C / 51%
14
43
AQI (IN)
AQI (US)
23˚C / 29%
10
25
AQI (IN)
AQI (US)
21˚C / 26%
25
29
AQI (IN)
AQI (US)
21˚C / 31%
5
8
AQI (IN)
AQI (US)
8˚C / 81%
29
49
AQI (IN)
AQI (US)
21˚C / 25%

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
41


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 41 (GOOD) AQI now. This was last updated 3 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.



prana air squair indoor air quality monitor for Ontario





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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