worst hit. the capital new delhi and central india are affected too. most vulnerable, people who didn't have access to shelter. the homeless, construction workers, beggars, migrant laborers who often live on the streets, and, the elderly. >> it is very severe. due to that people are getting dehydrated and facing so much feeling like fainting. and they're feeling very sick. the early morning by 8:00 very severe heat. losing all of their energy. >> reporter: local disaster management officials in some states are urging people to stay indoors between 10:00 a.m. and 4:00 p.m. to wear cotton clothes and use caps and umbrellas. they're also distributing water and buttermilk to help people stay hydrated.