The Financial hub of Karachi is the worst-hit area where temperature are continuing to rise.
The army in the area are handing out cold wet towels, juice and rehydration salt.
More than 22 pop up health centres have been established in order to distribute aid.
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#ClimateChange "@Abramjee: #PakistanHeatWave claims hundreds of lives. Our prayers&thoughts are with those affected. pic.twitter.com/F7zo9Sb0u1"
— C Constantinides (@ChangeAgentSA) June 24, 2015