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Air quality in St. Catharines
Air quality index (AQI) and PM2.5 air pollution in St. Catharines
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St. Catharines Air Quality Map
Real-time St. Catharines air pollution map
AIR QUALITY DATA CONTRIBUTORS
Government of Ontario, Ministry of the Environment
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Pollen
What is the pollen count in St. Catharines today?
 | Index | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in St. Catharines?
| Weather | Broken clouds |
| Temperature | 59°F |
| Humidity | 79% |
| Wind | 20.7 mp/h |
| Pressure | 30.1 Hg |
live aqi city ranking
Real-time Canada city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Windsor, Ontario | 61 |
| 2 | Kitchener, Ontario | 53 |
| 3 | Sault Ste Marie, Ontario | 52 |
| 4 | London, Ontario | 48 |
| 5 | Waterloo, Ontario | 40 |
| 6 | Patricia Mcinnes, Alberta | 38 |
| 7 | Lac La Biche, Alberta | 36 |
| 8 | Fort Mckay, Alberta | 35 |
| 9 | Oakville, Ontario | 35 |
| 10 | Hamilton, Ontario | 34 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live St. Catharines aqi ranking
Real-time St. Catharines air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | St. Catharines Station | 25 |
(local time)
SEE WORLD AQI RANKING
US AQI
25
live AQI index
Good
Overview
What is the current air quality in St. Catharines?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 25 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 6µg/m³ | |
!
PM2.5
x1.2
PM2.5 concentration in St. Catharines is currently 1.2 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in St. Catharines?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
St. Catharines air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, Apr 24 | Good 21 AQI US |  | 48.2° 33.8° |  11.2 mp/h |
| Thursday, Apr 25 | Good 29 AQI US |  | 55.4° 33.8° | 15.7 mp/h |
| Friday, Apr 26 | Good 30 AQI US |  | 59° 48.2° | 17.9 mp/h |
| Today | Good 25 AQI US | 100% | 59° 48.2° | 17.9 mp/h |
| Sunday, Apr 28 | Good 46 AQI US | 100% | 60.8° 50° | 17.9 mp/h |
| Monday, Apr 29 | Good 42 AQI US | 100% | 57.2° 42.8° | 17.9 mp/h |
| Tuesday, Apr 30 | Good 48 AQI US | 100% | 51.8° 46.4° | 4.5 mp/h |
| Wednesday, May 1 | Good 47 AQI US | | 53.6° 44.6° | 4.5 mp/h |
| Thursday, May 2 | Moderate 58 AQI US  | 90% | 59° 46.4° | 11.2 mp/h |
| Friday, May 3 | Good 46 AQI US | 100% | 66.2° 57.2° | 17.9 mp/h |
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News
The latest air quality news and resources.
St. Catharines air quality data attribution
1Contributor
Government Contributor
2 Data sources
Where is the cleanest air quality in St. Catharines?
AQI US, Metric