Check real time air quality index of all major cities in China for free


Cover all major cities in China

Shows AQI (Air Quality Index) and PM2.5 values for more than 1800 air monitoring sataions, in more than 430 cities all around China.

Real time data update

Air Quality data are automatically refreshed for every 30 minutes.

Compatible with different standards

User can select between U.S. standard and Chinese standard, and calculating AQI based on realtime or 24h average data.

History chart for last 24 hours

Shows the dynamic changing of air quality for last 24 hours.

History chart for last 30 days

Shows the dynamic changing of air quality for last 30 days.

Social Sharing

Share to twitter, facebook, weibo, etc with text and image.

App Widget

(Only available on Android version) Check latest AQI value without have to open the application every time. Widget color changes automatically according to AQI value.


Please feel free to send us questions or suggestions by submitting a contact form.