Close Window- Air Quality App

Best Air Quality App! Real-time PM2.5 · Fine Dust · Weather alerts. (Korea only)

** Currently supports Korea only **

🌬️ Close Window - Smart Indoor Air Management

Wondering when to open or close your windows? Close Window tells you the optimal time based on real-time air quality and weather data.

[Key Features]

1. Real-time Air Quality Monitoring
- Check PM10, PM2.5, ozone and other air pollutants in real-time
- Official data from Korea Environment Corporation (AirKorea)
- Color-coded air quality levels for instant recognition

2. Accurate Weather Information
- Reliable weather forecasts via Korea Meteorological Administration API
- Detailed data: temperature, humidity, precipitation, wind speed
- Hourly and daily forecasts for planning ahead

3. Smart Window Guide
- Window opening/closing recommendations based on air quality and weather analysis
- Intuitive messages: "Safe to open windows", "Keep windows closed"
- Personalized advice considering yellow dust, fine dust, and rain

4. Convenient Location Management
- Automatic GPS location detection for instant local info
- Save favorite locations: home, office, and more
- Nationwide coverage including all major cities and regions

5. Customized Alert Service
- Instant push notifications when air quality worsens
- Scheduled alerts at user-defined times
- Notifications for significant weather changes

[Recommended For]

- Those hesitant to open windows due to fine dust concerns
- People interested in indoor air quality management
- Those with allergies or respiratory conditions sensitive to air quality
- Families with children or elderly members concerned about indoor environment
- Anyone wanting to check weather before hanging laundry or bedding

[Privacy Protection]
- Location data used only temporarily for weather and air quality information
- Personal data stored only on device
- No unnecessary permission requests, only essential features

[Supported Environments]
- All Android 5.0+ devices
- Air quality and weather information for all regions in Korea
- Offline access to last cached data

Create a healthier, more comfortable indoor environment with Close Window.
Protect your family's health with one simple app.

Download now and start smart air management!

# Data Sources
• Air Quality Data: Korea Environment Corporation AirKorea (https://www.airkorea.or.kr)
• Weather Data: Korea Meteorological Administration (https://data.kma.go.kr)
• Public Data: Korea Public Data Portal (https://www.data.go.kr)

⚠️ Disclaimer
This app does not represent any government agency. It is a privately developed app utilizing public Open API data.