Present Today
Last 7 days  Last 30 days
 
 
Shown are air quality data by region (unit: each district, Gu) for the present, today, and the last 7 days
    or 30 days.

- Period
· Data for the present - data as of now
· Data for today - average for today
· Data for the last 7 days - average for the 7 days before from now
· Data for the last 30 days - average for the 30 days before from now