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Air quality near St. Catharines, Ontario
Air quality index (AQI) and PM2.5 air pollution near St. Catharines, Ontario
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Air Quality Map
Real-time St. Catharines air pollution map
AIR QUALITY DATA CONTRIBUTORS
Station operated by
Government of Ontario, Ministry of the Environment
Government
Pollen
What is the pollen count in Ontario today?
 | Index | Moderate | |
 | Tree pollen | Low | |
 | Grass pollen | Moderate | |
 | Weed pollen | Moderate |
Weather
What is the current weather near St. Catharines, Ontario?
| Weather | Broken clouds |
| Temperature | 64.4°F |
| Humidity | 80% |
| Wind | 17.3 mp/h |
| Pressure | 30.2 Hg |
live aqi city ranking
Real-time Canada city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Fort St John, British Columbia | 181 |
| 2 | Fort Mckay, Alberta | 176 |
| 3 | Smithers, British Columbia | 88 |
| 4 | Ottawa, Ontario | 80 |
| 5 | Gatineau, Quebec | 79 |
| 6 | Kelowna College, British Columbia | 78 |
| 7 | Kelowna, British Columbia | 72 |
| 8 | Hull (Ile), Quebec | 71 |
| 9 | Trail, British Columbia | 71 |
| 10 | Val-d'Or, Quebec | 71 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live aqi station ranking
Real-time St. Catharines air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | St. Catharines | 55 |
(local time)
SEE WORLD AQI RANKING
US AQI
55
live AQI index
Moderate
Overview
What is the current air quality near St. Catharines, Ontario?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 55 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 14µg/m³ | |
| NO2 | 4.9µg/m³ | |
Health Recommendations
How to protect from air pollution in St. Catharines?
 | Sensitive groups should wear a mask outdoors GET A MASK |
 | Sensitive groups should run an air purifier GET AN AIR PURIFIER |
 | Close your windows to avoid dirty outdoor air GET A MONITOR |
 | Sensitive groups should reduce outdoor exercise |
News
The latest air quality news and resources.
Forecast
St. Catharines, Ontario air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Friday, Sep 22 | Good 43 AQI US  | |||
| Saturday, Sep 23 | Good 43 AQI US | |||
| Sunday, Sep 24 | Good 47 AQI US | |||
| Sunday, Sep 24 | Good 35 AQI US | | 68° 59° |  15.7 mp/h |
| Today | Moderate 55 AQI US |  40% | 68° 57.2° | 17.9 mp/h |
| Tuesday, Sep 26 | Good 24 AQI US | | 68° 53.6° | 15.7 mp/h |
| Wednesday, Sep 27 | Good 8 AQI US | | 68° 51.8° | 8.9 mp/h |
| Thursday, Sep 28 | Good 22 AQI US |  | 68° 57.2° | 6.7 mp/h |
| Friday, Sep 29 | Moderate 54 AQI US |  | 68° 55.4° | 11.2 mp/h |
| Saturday, Sep 30 | Moderate 59 AQI US | | 69.8° 57.2° | 2.2 mp/h |
| Sunday, Oct 1 | Moderate 68 AQI US | | 73.4° 59° | 8.9 mp/h |
Interested in hourly forecast? Get the app
Historical
Historic air quality graph: St. Catharines, Ontario
How to best protect from air pollution?
St. Catharines air quality data attribution
Contributor
Government
Data sources
Where is the cleanest air quality in St. Catharines?
AQI US, Metric