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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 | Low | |
 | Tree pollen | Low | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in St. Catharines?
| Weather | Broken clouds |
| Temperature | 59°F |
| Humidity | 51% |
| Wind | 14.5 mp/h |
| Pressure | 30.4 Hg |
live aqi city ranking
Real-time Canada city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Hamilton, Ontario | 52 |
| 2 | Oakville, Ontario | 39 |
| 3 | Patricia Mcinnes, Alberta | 33 |
| 4 | Quebec City, Quebec | 33 |
| 5 | Saguenay, Quebec | 33 |
| 6 | Lac La Biche, Alberta | 32 |
| 7 | Cold Lake, Alberta | 31 |
| 8 | Fort Mckay, Alberta | 31 |
| 9 | Oshawa, Ontario | 31 |
| 10 | Winnipeg, Manitoba | 31 |
(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 | 32 |
(local time)
SEE WORLD AQI RANKING
US AQI
17
live AQI index
Good
Overview
What is the current air quality in St. Catharines?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 17 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 4µg/m³ | |
✓
PM2.5 concentration in St. Catharines air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in St. Catharines?
 | Enjoy outdoor activities |
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Forecast
St. Catharines air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Tuesday, Apr 23 | Good 31 AQI US |  | 46.4° 37.4° |  15.7 mp/h |
| Wednesday, Apr 24 | Good 21 AQI US |  | 48.2° 33.8° | 11.2 mp/h |
| Thursday, Apr 25 | Good 27 AQI US | | 59° 33.8° | 15.7 mp/h |
| Today | Good 17 AQI US | | 59° 33.8° | 15.7 mp/h |
| Saturday, Apr 27 | Good 24 AQI US | 100% | 55.4° 46.4° | 17.9 mp/h |
| Sunday, Apr 28 | Good 45 AQI US | 60% | 60.8° 51.8° | 15.7 mp/h |
| Monday, Apr 29 | Moderate 59 AQI US  | 90% | 59° 50° | 4.5 mp/h |
| Tuesday, Apr 30 | Moderate 51 AQI US | 100% | 57.2° 50° | 8.9 mp/h |
| Wednesday, May 1 | Moderate 55 AQI US | | 55.4° 48.2° | 6.7 mp/h |
| Thursday, May 2 | Good 12 AQI US | | 57.2° 50° | 6.7 mp/h |
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News
The latest air quality news and resources.
How to best protect from air pollution?
St. Catharines air quality data attribution
1Contributor
Government Contributor
2 Data sources
Where is the cleanest air quality in St. Catharines?
AQI US, Metric