Clear Days


A clear day is a day in which all 5 criteria pollutants at all 13 urban rooftop stations complied with the short-term World Health Organization (WHO) Air Quality Guidelines. We have used green colour to represent a clear day and grey colour to represent a polluted day. For more details, please refer to FAQ.

  • 2017

    141/296

    2017
  • 2016

    109/366

    2016
  • 2015

    72/365

    2015

Clear Days Calendar


  • Clear days
  • Exceedance Days