Live

Toronto Downtown Air Quality Index (AQI) | Air Pollution

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

Last Updated: 04 Aug 2025, 12:39pm (Local Time)

location image
Live AQI
141(AQI-US)
Air Quality is
Poor
pm10 :  42 µg/m³
PM2.5 :  52 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi poor level.webp in Toronto Downtown
overcast

25 °C

Overcast
Humidity
Humidity51 %

Wind Speed
Wind Speed4 km/h

UV Index
UV Index5
Last Updated: 04 Aug 2025, 12:39pm (Local Time)


Map

Toronto Downtown

Major Air Pollutants

Toronto Downtown

AQI Graph

Historical Air Quality Data

Toronto Downtown

Toronto Downtown
AQI
.
03-08-2025Time04-08-2025
79
Min.at 3:09 PM on 3rd Aug
145
Max.at 12:09 PM on 4th Aug

Download 2024 Annual Data

World Air Quality Report

Globe

AQI Trends - Annual Air Quality Changes

Toronto Downtown, Toronto, Ontario, Canada

Year
.
AQI


Annual AQI Trends

2020
32AQI
2021
36AQI
13%
Rise
2022
35AQI
-3%
Fall
2023
37AQI
6%
Rise
2024
32AQI
-14%
Fall
2025
35AQI
9%
Rise
Overall Annual Percentage (%) change of AQI in (2020 to 2025)
2%
Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedAugust, 202560AQI

Least PollutedAugust, 202218AQI

* This data analysis is from year 2020 - 2025

Canada's Metro Cities

Air Quality Index

Health Advice For People Living In

Toronto Downtown

1.4Cigarettes per day

Cigarette
Weekly 9.7 Cigarettes
Monthly 42 Cigarettes

Breathing the air in this location is as harmful as smoking 1.4 cigarettes a day.

Source:

Berkeley Earth

Disclaimer: This cigarette-equivalent estimate is based on the average PM2.5 concentration over the last 24 hours, assuming continuous exposure during that time.

Solutions for Current AQI

  • Air Purifier
    Air PurifierTurn On
  • Car Filter
    Car FilterMust
  • N95 Mask
    N95 MaskMust
  • Stay Indoor
    Stay IndoorMust


Must turn on the air purifier to enjoy fresh air.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Toronto Downtown

  • asthma due to air pollution in Toronto DowntownAsthma
  • heart due to air pollution in Toronto DowntownHeart Issues
  • allergy due to air pollution in Toronto DowntownAllergies
  • sinus due to air pollution in Toronto DowntownSinus
  • flu due to air pollution in Toronto DowntownCold/Flu
  • copd due to air pollution in Toronto DowntownChronic (COPD)
asthma due to air pollution in Toronto Downtown

Mild Chances of Asthma

Asthma

Risk of Asthma symptoms is Mild when AQI is Poor (50-150)

Moderate symptoms including frequent wheezing, noticeable shortness of breath, chest tightness, and persistent cough.

Do's :

  • Limit outdoor activities when AQI is poor.

  • Clean indoor air with an air purifier to reduce exposure.

  • Soothe the respiratory tract with herbal teas or warm water to help alleviate symptoms.

Don'ts :

  • Exercise outdoors without a mask.

  • Stay in smoky areas with strong fumes.

Disclaimer: The above health risks are precautionary suggestions based on current AQI levels. You may not feel the effects immediately, but prolonged exposure to air pollution can contribute to these health conditions over time. AQI.IN is neither a medical expert nor a provider of medical advice. Please consult a doctor if you experience any of the above similar symptoms.

Most Polluted Cities 2025

Canada

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

Toronto Downtown'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 Toronto Downtown
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 Toronto Downtown

Frequently Asked Questions About Air Quality

What is the current AQI level in Toronto Downtown?

The current real-time AQI level in Toronto Downtown is 141 (Poor). This was last updated 04 Aug 2025, 12:39pm (Local Time).

When was the best AQI level in Toronto Downtown in the last 24 hours?

The best AQI level was 79 (Moderate) at 3:09 PM, Aug 3, 2025 (Local Time) during the last 24 hours.

When was the worst AQI level in Toronto Downtown in the last 24 hours?

The worst AQI level was 145 (Poor) at 12:09 PM (Local Time) during the last 24 hours.

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

The AQI levels in Toronto Downtown have been fluctuating throughout the last 24 hours. The levels have increased by highest 145 at 12:09 PM (Local Time), lowest 79 at 3:09 PM, Aug 3, 2025 (Local Time).

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

Current AQI levels are unhealthy for Sensitive individuals, they should reduce prolonged or heavy outdoor exertion.