Be the first to measure and contribute air quality data to your community
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in St. Thomas
Air quality index (AQI) and PM2.5 air pollution in St. Thomas
346 people follow this city
St. Thomas Air Quality Map
Real-time St. Thomas air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in St. Thomas today?
 | Index | None | |
 | Tree pollen | None | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in St. Thomas?
| Weather | Broken clouds |
| Temperature | 69.8°F |
| Humidity | 65% |
| Wind | 5 mp/h |
| Pressure | 30.1 Hg |
live aqi city ranking
Real-time Canada city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Hamilton, Ontario | 56 |
| 2 | Burlington, Ontario | 52 |
| 3 | Guelph, Ontario | 52 |
| 4 | Windsor, Ontario | 51 |
| 5 | Oshawa, Ontario | 49 |
| 6 | Rouyn-Noranda, Quebec | 47 |
| 7 | La Tuque, Quebec | 46 |
| 8 | Laval, Quebec | 45 |
| 9 | Peace River, Alberta | 45 |
| 10 | Montreal, Quebec | 44 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
40*
live AQI index
Good
Overview
What is the current air quality in St. Thomas?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 40* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 7.3*µg/m³ | |
!
PM2.5
x1.5
PM2.5 concentration in St. Thomas is currently 1.5 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in St. Thomas?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
St. Thomas air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Friday, May 31 | Good 40 AQI US | | 69.8° 51.8° |  8.9 mp/h |
| Today | Good 40 AQI US |  100% | 62.6° 57.2° | 11.2 mp/h |
| Sunday, Jun 2 | Moderate 55 AQI US  | | 71.6° 55.4° | 6.7 mp/h |
| Monday, Jun 3 | Moderate 57 AQI US | 40% | 68° 59° | 11.2 mp/h |
| Tuesday, Jun 4 | Moderate 56 AQI US | 100% | 64.4° 62.6° | 15.7 mp/h |
| Wednesday, Jun 5 | Good 36 AQI US | 100% | 69.8° 53.6° | 15.7 mp/h |
| Thursday, Jun 6 | Good 12 AQI US | 100% | 64.4° 51.8° | 15.7 mp/h |
| Friday, Jun 7 | Good 13 AQI US | 70% | 59° 51.8° | 11.2 mp/h |
Interested in hourly forecast? Get the app
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