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 Thorold
Air quality index (AQI) and PM2.5 air pollution in Thorold
258 people follow this city
Thorold Air Quality Map
Real-time Thorold air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Weather
What is the current weather in Thorold?
| Weather | Mist |
| Temperature | 59°F |
| Humidity | 95% |
| Wind | 5.7 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time Canada city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Saguenay, Quebec | 57 |
| 2 | Hamilton, Ontario | 55 |
| 3 | Waterloo, Ontario | 52 |
| 4 | London, Ontario | 51 |
| 5 | Leduc, Alberta | 50 |
| 6 | Kitchener, Ontario | 49 |
| 7 | Oshawa, Ontario | 48 |
| 8 | Regina, Saskatchewan | 45 |
| 9 | Valemount, British Columbia | 45 |
| 10 | Mississauga, Ontario | 44 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
59*
live AQI index
Moderate
Overview
What is the current air quality in Thorold?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 59* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 13.4*µg/m³ | |
!
PM2.5
x2.7
PM2.5 concentration in Thorold is currently 2.7 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Thorold?
 | 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
Thorold air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Moderate 59 AQI US |  | 68° 53.6° |  4.5 mp/h |
| Sunday, May 19 | Moderate 66 AQI US | | 71.6° 57.2° | 6.7 mp/h |
| Monday, May 20 | Moderate 67 AQI US |  60% | 73.4° 60.8° | 15.7 mp/h |
| Tuesday, May 21 | Moderate 62 AQI US | 60% | 73.4° 64.4° | 20.1 mp/h |
| Wednesday, May 22 | Good 42 AQI US  | 100% | 62.6° 50° | 15.7 mp/h |
| Thursday, May 23 | Good 11 AQI US |  | 60.8° 46.4° | 8.9 mp/h |
| Friday, May 24 | Good 19 AQI US |  | 69.8° 48.2° | 8.9 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 Thorold?
No locations are available.
AQI US, Metric