Échangeur Décarie, Montreal Air Pollution:
Real-time Air Quality Index (AQI)

Echangeur Decarie, Montreal
Ile De Montreal - Centre, Quebec
Duncan, Montreal
Saint-michel, Montreal
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Échangeur Décarie, Montreal AQI: Échangeur Décarie, Montreal Real-time Air Quality Index (AQI).
24
Good
Updated on Thursday 23:00
temperature: 19°C
currentpast 2 daysminmax
PM2.5 AQI
24Échangeur Décarie, Montreal, Canada PM25 (fine particulate matter) measured by Ville de Montreal - Réseau de surveillance de la qualité de l air. Values are converted to the US EPA AQI standard.2470
O3 AQI
7Échangeur Décarie, Montreal, Canada O3 (ozone) measured by Ville de Montreal - Réseau de surveillance de la qualité de l air. Values are converted to the US EPA AQI standard.426
NO2 AQI
15Échangeur Décarie, Montreal, Canada NO2 (nitrogen dioxide) measured by Ville de Montreal - Réseau de surveillance de la qualité de l air. Values are converted to the US EPA AQI standard.433
SO2 AQI
-Échangeur Décarie, Montreal, Canada SO2 (sulfur dioxide) measured by Ville de Montreal - Réseau de surveillance de la qualité de l air. Values are converted to the US EPA AQI standard.510
CO AQI
-Échangeur Décarie, Montreal, Canada CO (carbon monoxide) measured by Ville de Montreal - Réseau de surveillance de la qualité de l air. Values are converted to the US EPA AQI standard.66
Temp.
19Échangeur Décarie, Montreal, Canada t (temp.) measured by Citizen Weather Observer Program (CWOP/APRS).1931
Pressure
1021Échangeur Décarie, Montreal, Canada p (pressure:) measured by Citizen Weather Observer Program (CWOP/APRS).10081021
Humidity
68Échangeur Décarie, Montreal, Canada h (humidity) measured by Citizen Weather Observer Program (CWOP/APRS).4391
Wind
2Échangeur Décarie, Montreal, Canada w (wind) measured by Citizen Weather Observer Program (CWOP/APRS).110
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Air Quality Forecast
FRI 15
28°C
14°C
SAT 16
31°C
16°C
SUN 17
23°C
14°C
MON 18
24°C
11°C
TUE 19
25°C
13°C
PM2.5
Friday 15Saturday 16Sunday 17Monday 18Tuesday 19
hour
0369121518210369121518210369121518210369121518210369121518
Wind Speed (m/s)
344321122222234545575225322332333455324







































Temp.
18°16°15°21°26°28°25°21°19°17°17°24°29°31°29°25°23°22°22°15°15°19°20°15°13°12°12°17°21°24°22°19°16°14°13°19°23°25°23°
relative humidity
515052322220284047525640313136465262689190595253626663422723304150625838272329
barometric pressure
102110221023102410221021102110211021102110211020101810151014101310121011101110141017101710171020102210221023102510231022102210231023102310231023102110191018
total precipitation
1.32.90.10.1
UVI:
8


5:55 ~ 20:05
UVI:
7


5:56 ~ 20:04
UVI:
3


5:58 ~ 20:02
UVI:
7


5:59 ~ 20:00
UVI:
1


6:00 ~ 19:59
Forecast plotted using timezone -04:00
Latest forecast updates:
Wind: an hour ago [Aug 15, 2025 4:45 AM]
fine particulate matter: 15 hours ago [Aug 14, 2025 2:25 PM]
click to view the detailed forecast

Air Quality Data provided by: Ville de Montreal - Réseau de surveillance de la qualité de l'air (ville.montreal.qc.ca)

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News (Jul 2014): The Air Quality data for Montreal is converted from the IQA standard to the US-EPA standard (scale 0-500). Check this article for more information

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About the Air Quality and Pollution Measurement:

About the Air Quality Levels

AQIAir Pollution LevelHealth ImplicationsCautionary Statement (for PM2.5)
0 - 50GoodAir quality is considered satisfactory, and air pollution poses little or no riskNone
51 -100ModerateAir quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
101-150Unhealthy for Sensitive GroupsMembers of sensitive groups may experience health effects. The general public is not likely to be affected.Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
151-200UnhealthyEveryone may begin to experience health effects; members of sensitive groups may experience more serious health effectsActive children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion
201-300Very UnhealthyHealth warnings of emergency conditions. The entire population is more likely to be affected.Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.
300+HazardousHealth alert: everyone may experience more serious health effectsEveryone should avoid all outdoor exertion

To know more about Air Quality and Pollution, check the wikipedia Air Quality topic or the airnow guide to Air Quality and Your Health.

For very useful health advices of Beijing Doctor Richard Saint Cyr MD, check www.myhealthbeijing.com blog.


Usage Notice: All the Air Quality data are unvalidated at the time of publication, and due to quality assurance these data may be amended, without notice, at any time. The World Air Quality Index project has exercised all reasonable skill and care in compiling the contents of this information and under no circumstances will the World Air Quality Index project team or its agents be liable in contract, tort or otherwise for any loss, injury or damage arising directly or indirectly from the supply of this data.



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