Primary Pollutant

(AQI)

 Ontario GOOD aqi boy

Ontario Air Quality Index (AQI)

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

Last Update: 22 Sep 2023, 08:05am

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


Comparative Exposure with Ontario

24 hrs avg AQI

Ontario

Canada
35

Major Air Pollutants in Ontario

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Ontario carbon monoxide icon
72 (CO)
Ontario no2 nitrogen dioxide Icon
10 (NO2)

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 29 29 14 7 0 11 89
Belleville GOOD 25 25 10 6 0 5 100
Bluewater GOOD 42 42 17 10 0 16 78
Brampton MODERATE 59 59 27 16 0 14 82
Brantford GOOD 33 33 14 8 0 14 100
Burlington GOOD 29 29 12 7 0 12 94
Chatham GOOD 42 42 19 10 0 18 91
Cornwall MODERATE 55 55 23 14 0 9 100
Hamilton GOOD 38 38 2 9 0 12 94
Kincardine GOOD 33 33 14 8 0 17 69
London GOOD 46 46 18 11 0 15 88
Loyalist GOOD 25 25 10 6 0 10 94
Mississauga GOOD 29 29 12 7 0 14 82
Newmarket GOOD 25 25 19 6 0 13 88
North Bay MODERATE 55 55 24 14 0 14 88
Oakville GOOD 29 29 12 7 0 14 82
Oshawa GOOD 17 17 16 4 0 14 88
Ottawa GOOD 26 26 5 6 0 11 94
Parry Sound GOOD 25 25 19 6 0 14 82
Petawawa GOOD 26 26 28 3 0 6 100
Peterborough GOOD 25 25 12 6 0 9 100
Sault Ste. Marie GOOD 21 21 23 1 0 16 100
St Catharines GOOD 46 46 18 11 0 14 82
St Thomas GOOD 42 42 20 10 0 15 88
Sudbury MODERATE 55 55 23 14 0 14 100
Temiskaming Shores GOOD 21 21 5 5 0 16 75
Thunder Bay GOOD 50 50 20 12 0 14 94
Toronto GOOD 31 31 11 7 0 17 77
Waterloo GOOD 33 33 15 8 0 12 94
Windsor MODERATE 52 52 26 13 0 17 90

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

11
31
AQI (IN)
AQI (US)
17˚C / 77%
18
41
AQI (IN)
AQI (US)
9˚C / 93%
23
55
AQI (IN)
AQI (US)
12˚C / 65%
22
53
AQI (IN)
AQI (US)
8˚C / 66%
31
64
AQI (IN)
AQI (US)
4˚C / 81%
5
26
AQI (IN)
AQI (US)
11˚C / 94%
8
12
AQI (IN)
AQI (US)
13˚C / 82%
26
52
AQI (IN)
AQI (US)
17˚C / 90%

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
35


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