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Air quality in St. Thomas
Air quality index (AQI) and PM2.5 air pollution in St. Thomas
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St. Thomas Air Quality Map
Real-time St. Thomas air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Weather
What is the current weather in St. Thomas?
| Weather | Clear sky |
| Temperature | 68°F |
| Humidity | 77% |
| Wind | 5.9 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time Canada city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Waterloo, Ontario | 55 |
| 2 | Hamilton, Ontario | 54 |
| 3 | Saguenay, Quebec | 54 |
| 4 | Kitchener, Ontario | 53 |
| 5 | London, Ontario | 51 |
| 6 | Valemount, British Columbia | 49 |
| 7 | Oshawa, Ontario | 48 |
| 8 | Leduc, Alberta | 44 |
| 9 | Maniwaki, Quebec | 44 |
| 10 | Quebec City, Quebec | 42 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
55*
live AQI index
Moderate
Overview
What is the current air quality in St. Thomas?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 55* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 11.4*µg/m³ | |
!
PM2.5
x2.3
PM2.5 concentration in St. Thomas is currently 2.3 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in St. Thomas?
 | Sensitive groups should reduce outdoor exercise |
 | Close your windows to avoid dirty outdoor air GET A MONITOR |
 | Sensitive groups should wear a mask outdoors GET A MASK |
 | Sensitive groups should run an air purifier GET AN AIR PURIFIER |
Forecast
St. Thomas air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Moderate 55 AQI US | | 73.4° 55.4° |  6.7 mp/h |
| Sunday, May 19 | Moderate 61 AQI US |  30% | 75.2° 59° | 8.9 mp/h |
| Monday, May 20 | Moderate 63 AQI US | 60% | 77° 60.8° | 13.4 mp/h |
| Tuesday, May 21 | Moderate 58 AQI US | 100% | 73.4° 62.6° | 20.1 mp/h |
| Wednesday, May 22 | Good 31 AQI US  | 100% | 60.8° 46.4° | 20.1 mp/h |
| Thursday, May 23 | Good 18 AQI US |  | 64.4° 42.8° | 6.7 mp/h |
| Friday, May 24 | Good 27 AQI US | | 73.4° 48.2° | 15.7 mp/h |
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News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in St. Thomas?
No locations are available.
AQI US, Metric