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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 | None | |
 | Tree pollen | None | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in St. Catharines?
| Weather | Broken clouds |
| Temperature | 75.2°F |
| Humidity | 52% |
| Wind | 7 mp/h |
| Pressure | 30.2 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 St. Catharines aqi ranking
Real-time St. Catharines air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | St. Catharines Station | 49 |
(local time)
SEE WORLD AQI RANKING
US AQI
50
live AQI index
Good
Overview
What is the current air quality in St. Catharines?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 50 US AQI | O3 |
| Pollutants | Concentration | |
|---|---|---|
| O3 | 122µg/m³ | |
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 |
|---|---|---|---|---|
| Wednesday, May 29 | Good 32 AQI US |  | 64.4° 48.2° |  11.2 mp/h |
| Thursday, May 30 | Good 29 AQI US | | 69.8° 50° | 8.9 mp/h |
| Friday, May 31 | Good 40 AQI US | | 75.2° 53.6° | 8.9 mp/h |
| Today | Good 50 AQI US | | 75.2° 53.6° | 8.9 mp/h |
| Sunday, Jun 2 | Moderate 55 AQI US  |  100% | 60.8° 57.2° | 8.9 mp/h |
| Monday, Jun 3 | Moderate 62 AQI US | | 66.2° 57.2° | 6.7 mp/h |
| Tuesday, Jun 4 | Moderate 62 AQI US | | 71.6° 60.8° | 6.7 mp/h |
| Wednesday, Jun 5 | Moderate 63 AQI US | 100% | 66.2° 62.6° | 17.9 mp/h |
| Thursday, Jun 6 | Moderate 55 AQI US | 100% | 66.2° 60.8° | 13.4 mp/h |
| Friday, Jun 7 | Good 17 AQI US | 100% | 62.6° 53.6° | 15.7 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