Total fire bans have been declared for most of South Australia, with the Country Fire Service prepared for a potentially dangerous day with hot, dry and windy conditions forecast.

Total fire bans are in place for the Adelaide metropolitan area, Mount Lofty Ranges, Kangaroo Island, Mid North, Yorke Peninsula, Murraylands, Riverland, Upper South East, Lower South East, Eastern Eyre Peninsula, North West Pastoral, Lower Eyre Peninsula and West Coast districts until midnight.

Police patrols, as part of Operation Nomad, will target bushfire-prone areas across the state.

Adelaide will experience its 11th consecutive day of temperatures above 30C, with the mercury expected to reach 39.

The temperature only dropped to a low of 27.5C overnight.

A cool change has been forecast for Tuesday evening.