Meanwhile, international relief groups have expressed concern that millions of children could be at risk of dehydration and exposure to record high temperatures.
Severe heatwaves continue to grip Pakistan, with hundreds of people suffering from heatstroke being treated in hospitals across the country.
Locals are being urged to stay indoors as temperatures in some areas topped 50 degrees on Monday.
Across the country, volunteers are setting up makeshift relief camps to give people access to cold water and protection from the heat.
The state-run emergency service is also now stocking bottled water and ice to provide emergency treatment to victims of the extreme weather.
The heatwave has also affected the southwest and northwest of Pakistan.
Daytime temperatures have risen 8 degrees above average in May over the past 20 years, raising concerns about flooding in the Northwest due to melting glaciers.
Temperatures are forecast to soar to 55 degrees Celsius this month, and Pakistan recorded its wettest April since 1961. Heavy rains last month killed many people and destroyed homes and farmland.
Scientists blame climate change for the extreme weather, and Pakistani officials say the country is bearing the brunt of global climate disasters despite accounting for less than 1% of carbon emissions.
Many charities have also expressed concern that children in particular will be affected by the heat.
UNICEF says rising temperatures across the region could put the health of millions of children at risk if they are not protected and hydrated.
The non-governmental organisation Save the Children said the heatwave will keep more than half of Pakistan’s school-age children out of classrooms for a week.