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Tracking Air Quality

Air Quality Index

The Air Quality Index (AQI) is helpful for easily tracking the air quality around you. This index is used by governments to inform the public about the air quality in a city or large metropolitan area. The air quality index used differs from country to country.

The U.S. Environmental Protection Agency (EPA) has developed the most commonly used Air Quality Index. This AQI is divided into six categories of increasing levels of health concern. An AQI over 300 means the air quality is hazardous and below 50 the air quality is good.


Many factors influence the level of air pollution. Some of these factors include:

  • Wind
  • Traffic
  • Industry
  • Fires

Several websites keep track of the Air Pollution Index (AQI) and presents the information on maps. For example https://aqicn.org/ has information on most cities in the world. Below is the real-time map of air pollution in Bangkok.

aqicn bangkok Small

AirVisual App

An easy way to know the air quality in your city is through the AirVisual App. The app can automatically locate the city you are in and show you the relevant air quality information. You can choose other cities or areas as needed, and even see map views of all the AQI readings.

The screenshots below show Chiang Mai in Thailand. You can also set notifications or alerts as needed for the current air quality in your city.  This can give you a heads up as to what you may expect before you go out to work or play.

Download the app here.

airvisual chiangmaiairvisual map 1


Air quality can change rapidly, as can be seen on the pictures of Singapore below. Be prepared by always carrying your StyleSEAL Air Mask with you.

Pollution Singapore

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