Patterns of outdoor exposure to heat in three South Asian cities

This paper presents an assessment of exposure to outdoor heat in the South Asian cities Delhi, Dhaka, and Faisalabad. Conditions classified as dangerous to very dangerous and likely to impede productivity, are observed almost every day of the measurement period during daytime. This was found even when air temperature falls after the onset of the monsoon. Detailed results show people living in informal neighbourhoods are consistently more exposed to heat than people living in more prosperous neighbourhoods. During night-time, exposure tends to be enhanced in densely-built informal neighbourhoods. Greener and more open neighbourhoods tend to be cooler.UK Government's Department for International Development (DFID