The Air Pollution in Seoul dataset provides average values for six pollutants (SO2, NO2, CO, O3, PM10, PM2.5).

• Data were measured for 25 districts in Seoul.
• Data were measured every hour during 2017-2019.
• The visualization aggregated hourly data into daily summaries by mean.

What does the color mean?

The colors of each air pollutant are determined by the Information on Seoul City air pollution measurement items , below is the definition of each color.

• Blue means the air quality is good.
• Green means normal air quality.
• Yellow means bad air quality.
• Red means very bad air quality.