Air Pollution Information (CAI) is based on real-time air pollution and fine dust levels provided by the Korea Environment Corporation (Air Korea) of the Ministry of Environment, and intuitively displays them in colors according to the 8-level grades recommended by the WHO. Check various air quality information such as fine dust, ultrafine dust, ozone, and yellow dust at a glance, and plan your outings, travel, and indoor ventilation wisely with hourly forecasts and notification functions.
Now, make sure to check the air quality information before going out!

■ Main functions
• You can check the integrated air quality index, fine dust, ultrafine dust, sulfur dioxide, carbon monoxide, ozone, nitrogen dioxide, and yellow dust levels and grades at a glance.
• The semicircle (circle) graph is a specialized function of air pollution information, and you can visually check the grade and level.
• You can easily check the air pollution trend by displaying the 1-hour and 24-hour average values as lines and bar graphs. • Provides various notification functions such as numerical grade, fine dust, yellow dust warning, ozone warning, smoke occurrence, air pollution status improvement, and good.
• Conveniently check the air quality, wind direction, and measuring station locations nationwide at a glance with the air quality map and air quality distribution map.
• Conveniently provides hourly forecasts (up to 24 hours) and daily forecasts (up to 2 days).
• Provides air quality forecasts and prediction models for today, tomorrow, and the day after tomorrow.
• Conveniently check the weather for up to 5 hours from the current time (weather, temperature, humidity, wind direction, wind speed).
• Provides pollen concentration risk index for oak and pine trees (4-6 months) and weeds (8-10 months).
• Conveniently check the values by city and province with maps and tables.
• Supports 18 widgets in total (6 types: Mini, Mini Slim, Slim, Simple, Icon, Standard), and various settings such as color and transparency are possible.
• Supports general and expert modes through simple settings, and can be easily set. • The WHO recommended 8-stage grade is applied by default, and the WHO 6-stage grade, Ministry of Environment grade, and user grade settings are possible.
• It is convenient when you need to check the air quality for going out, traveling, leisure, camping, indoor ventilation, etc., and it is helpful for infants, children, the elderly, and those who are sensitive to air quality (asthma, bronchial disease, etc.).
• You can easily check Air Korea, Japan Meteorological Association (tenki.jp), real-time air quality information (AQI), Earth Nullschool, and IQAir through the air pollution-related site menu.
• You can change the color by using the color theme function.

■ Disclaimer
• The app does not represent the government or government agencies.
• The app does not guarantee any interruption or error of the service, and the service is provided 'as is'.

■ Government information sources
• Ministry of Environment Korea Environment Corporation Air Korea (https://www.airkorea.or.kr)
• Korea Meteorological Administration Weather Nuri (https://www.weather.go.kr)
• Public Data Portal Ministry of Environment Korea Environment Corporation Air Korea Open API (https://www.data.go.kr)
• Public Data Portal Korea Meteorological Administration Open API (https://www.data.go.kr)

■ Note
• To prevent personal information leakage, location information is only used within the terminal and is never transmitted externally.
• Refer to the WHO recommended standards and FAQ in the menu for help with use.
• Advertisements are displayed for service operation.

■ Items of personal information processed
• [Optional] Foreground location information: Location data is collected while the app is in use and is used for the 'Current location air quality information' function and advertisement support.
• [Optional] Background location information: Location data is collected even when the app is closed or not in use and is used for the 'Current location air quality notification', 'Current location widget auto-refresh' function and advertisement support. ※ Even if you do not agree to the optional access rights, you can use the service except for the functions of the relevant rights.

■ Premium version
The air pollution information app provides a premium version. The differences between the basic version and the premium version are as follows.
• Advertisement: The premium version removes the bottom advertisement
• Number of widgets used: Basic 5 (Mini Slim 2,3,4 Slim 2,3 Simple 2,3,4 Icon 2,3,4,5 Standard 2,3,4 Widgets up to 3 each), Premium 10 (Mini Slim 2,3,4 Slim 2,3 Simple 2,3,4 Icon 2,3,4,5 Standard 2,3,4 Widgets up to 6 each)
• Widget refresh: Basic time limit of approximately 2 seconds, Premium of approximately 1 second
• Number of areas of interest: Basic 10, Premium 20
※ Please understand that this is a limitation considering the operation of the service.
※ The premium version is a concept of donation to support the development and operation of the app. There is no significant inconvenience in using the general version.