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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 |
Weather
What is the current weather in St. Catharines?
| Weather | Broken clouds |
| Temperature | 44.6°F |
| Humidity | 94% |
| Wind | 3.1 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time Canada city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Valemount, British Columbia | 62 |
| 2 | Abbotsford, British Columbia | 39 |
| 3 | Prince George, British Columbia | 39 |
| 4 | Sechelt, British Columbia | 39 |
| 5 | Victoria, British Columbia | 39 |
| 6 | Lethbridge, Alberta | 38 |
| 7 | Sherwood Park, Alberta | 38 |
| 8 | Fort St John, British Columbia | 37 |
| 9 | Port Moody, British Columbia | 37 |
| 10 | Brooks, Alberta | 36 |
(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 | 24 |
(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 | O3 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 5µg/m³ | |
| O3 | 60µg/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 |
 | 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 |
|---|---|---|---|---|
| Tuesday, Apr 16 | Good 28 AQI US |  | 53.6° 42.8° |  20.1 mp/h |
| Wednesday, Apr 17 | Good 30 AQI US | | 51.8° 46.4° | 11.2 mp/h |
| Thursday, Apr 18 | Good 24 AQI US | | 51.8° 42.8° | 17.9 mp/h |
| Today | Good 25 AQI US | 100% | 51.8° 42.8° | 17.9 mp/h |
| Saturday, Apr 20 | Good 11 AQI US | | 44.6° 39.2° | 17.9 mp/h |
| Sunday, Apr 21 | Good 6 AQI US |  | 48.2° 35.6° | 15.7 mp/h |
| Monday, Apr 22 | Good 15 AQI US | | 48.2° 39.2° | 8.9 mp/h |
| Tuesday, Apr 23 | Good 13 AQI US | 100% | 50° 44.6° | 22.4 mp/h |
| Wednesday, Apr 24 | Good 43 AQI US | 80% | 39.2° 32° | 20.1 mp/h |
| Thursday, Apr 25 | Good 5 AQI US | | 46.4° 33.8° | 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