Be the first to measure and contribute air quality data to your community
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Longueuil
Air quality index (AQI) and PM2.5 air pollution in Longueuil
6.2K people follow this city
Longueuil Air Quality Map
Real-time Longueuil air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Longueuil today?
 | Index | None | |
 | Tree pollen | None | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Longueuil?
| Weather | Broken clouds |
| Temperature | 80.6°F |
| Humidity | 32% |
| Wind | 2 mp/h |
| Pressure | 30.1 Hg |
live aqi city ranking
Real-time Canada city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  West End, British Columbia | 57 |
| 2 | Grimshaw, Alberta | 55 |
| 3 | Hamilton, Ontario | 53 |
| 4 | Oshawa, Ontario | 52 |
| 5 | Peace River, Alberta | 50 |
| 6 | Windsor, Ontario | 50 |
| 7 | Toronto, Ontario | 48 |
| 8 | La Tuque, Quebec | 47 |
| 9 | Laval, Quebec | 45 |
| 10 | Guelph, Ontario | 43 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Longueuil aqi ranking
Real-time Longueuil air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Bourassa | 40 |
(local time)
SEE WORLD AQI RANKING
US AQI
38
live AQI index
Good
Overview
What is the current air quality in Longueuil?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 38 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 6.9µg/m³ | |
!
PM2.5
x1.4
PM2.5 concentration in Longueuil is currently 1.4 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Longueuil?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Longueuil air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, May 29 | Good 26 AQI US | | 68° 46.4° |  6.7 mp/h |
| Thursday, May 30 | Good 30 AQI US | | 71.6° 50° | 11.2 mp/h |
| Friday, May 31 | Good 40 AQI US |  | 80.6° 53.6° | 6.7 mp/h |
| Today | Good 38 AQI US | | 80.6° 53.6° | 6.7 mp/h |
| Sunday, Jun 2 | Good 40 AQI US | | 75.2° 55.4° | 6.7 mp/h |
| Monday, Jun 3 | Moderate 62 AQI US  | | 78.8° 59° | 6.7 mp/h |
| Tuesday, Jun 4 | Moderate 65 AQI US |  | 80.6° 55.4° | 4.5 mp/h |
| Wednesday, Jun 5 | Moderate 76 AQI US | | 82.4° 60.8° | 4.5 mp/h |
| Thursday, Jun 6 | Moderate 52 AQI US |  100% | 71.6° 60.8° | 11.2 mp/h |
| Friday, Jun 7 | Good 19 AQI US | 100% | 64.4° 55.4° | 11.2 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Longueuil air quality data attribution
1 Data source
Where is the cleanest air quality in Longueuil?
AQI US, Metric