Primary Pollutant

(AQI)

 Ontario GOOD aqi boy

Ontario Air Quality Index (AQI)

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

Last Update: 29 May 2023, 07:05pm

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


Comparative Exposure with Ontario

24 hrs avg AQI

Ontario

Canada
43

Major Air Pollutants in Ontario

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Ontario carbon monoxide icon
18 (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 42 42 44 10 0 19 30
Belleville GOOD 40 40 43 7 0 18 32
Bluewater GOOD 47 47 51 8 0 16 38
Brantford GOOD 42 42 44 10 0 20 32
Burlington GOOD 41 41 44 8 0 19 27
Chatham GOOD 43 43 46 7 0 19 53
Cornwall GOOD 46 46 50 6 0 20 30
Hamilton MODERATE 53 53 31 14 0 19 27
Huntsville GOOD 30 30 32 7 0 19 30
Kincardine GOOD 46 46 41 11 0 16 38
Loyalist GOOD 42 42 45 6 0 15 51
Mississauga GOOD 40 40 14 8 0 18 30
Newmarket GOOD 42 42 43 10 0 18 27
North Bay GOOD 36 36 38 6 0 21 28
Oakville GOOD 42 42 17 10 0 18 30
Oliver Paipoonge GOOD 38 38 15 9 0 25 24
Oshawa GOOD 39 39 42 9 0 18 30
Ottawa GOOD 39 39 42 6 0 21 31
Peterborough GOOD 38 38 38 9 0 19 37
St Catharines GOOD 38 38 41 8 0 20 32
Sudbury GOOD 50 50 45 12 0 23 27
Temiskaming Shores GOOD 32 32 35 6 0 20 43
Thunder Bay GOOD 44 44 47 7 0 26 24
Toronto GOOD 39 39 41 9 0 16 47
Waterloo GOOD 50 50 51 12 0 20 22
Windsor MODERATE 60 60 40 11 0 22 23

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

Wear Mask

Required
stay indoors icon

Stay Indoor

Not Required
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Windows

Keep Close
use a purifier icon

Use Purifier

Required
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Family

Avoid 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

41
39
AQI (IN)
AQI (US)
16˚C / 47%
33
31
AQI (IN)
AQI (US)
22˚C / 25%
14
33
AQI (IN)
AQI (US)
23˚C / 51%
15
36
AQI (IN)
AQI (US)
22˚C / 30%
4
23
AQI (IN)
AQI (US)
21˚C / 26%
42
39
AQI (IN)
AQI (US)
21˚C / 31%
40
60
AQI (IN)
AQI (US)
22˚C / 23%

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
43


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 43 (GOOD) AQI now. This was last updated 4 hours ago .

The current concentration of PM2.5 in Ontario is 9 (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 0.36 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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