Hyderabad: Two states of the country namely; Gujarat and Rajasthan are facing heat waves. It is likely that A.P. and Telangana states may also have the effects of heat wave. Today, there will be heat wave in all the districts and in the next 24 hours temperature will rise up to 2-3 degrees. In Hyderabad and Secunderabad, the maximum temperature would be 40 and the minimum 25 degree Celsius.