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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 | High | |
 | Tree pollen | Low | |
 | Grass pollen | Low | |
 | Weed pollen | High |
Weather
What is the current weather near St. Catharines, Ontario?
| Weather | Clear sky |
| Temperature | 62.6°F |
| Humidity | 91% |
| Wind | 4.5 mp/h |
| Pressure | 30.1 Hg |
live aqi city ranking
Real-time Canada city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Toronto, Ontario | 65 |
| 2 | Mississauga, Ontario | 62 |
| 3 | Val-d'Or, Quebec | 62 |
| 4 | Montreal, Quebec | 61 |
| 5 | Oshawa, Ontario | 61 |
| 6 | Rouyn-Noranda, Quebec | 59 |
| 7 | Sudbury, Ontario | 59 |
| 8 | Brampton, Ontario | 58 |
| 9 | Kitchener, Ontario | 58 |
| 10 | Oakville, Ontario | 58 |
(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 | 53 |
(local time)
SEE WORLD AQI RANKING
US AQI
53
live AQI index
Moderate
Overview
What is the current air quality near St. Catharines, Ontario?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 53 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 13µg/m³ | |
| NO2 | 17.9µg/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 |
|---|---|---|---|---|
| Sunday, Oct 1 | Good 43 AQI US  | |||
| Monday, Oct 2 | Good 41 AQI US | |||
| Tuesday, Oct 3 | Good 43 AQI US | |||
| Today | Moderate 53 AQI US |  | 77° 62.6° |  8.9 mp/h |
| Thursday, Oct 5 | Moderate 54 AQI US |  70% | 77° 62.6° | 13.4 mp/h |
| Friday, Oct 6 | Moderate 52 AQI US | 100% | 66.2° 59° | 22.4 mp/h |
| Saturday, Oct 7 | Good 35 AQI US | 100% | 57.2° 48.2° | 26.8 mp/h |
| Sunday, Oct 8 | Good 5 AQI US | 80% | 50° 44.6° | 29.1 mp/h |
| Monday, Oct 9 | Good 6 AQI US | 90% | 51.8° 46.4° | 26.8 mp/h |
| Tuesday, Oct 10 | Good 9 AQI US | 70% | 51.8° 50° | 17.9 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