Dallas will likely experience triple-digit heat for multiple days.

The National Weather Service in Fort Worth placed the majority of North Texas under an excessive heat warning through 9 p.m. Thursday as rising temperatures are expected to become dangerously hot.

Heat index values — what it feels like based on air temperature and humidity — are forecast between 105 and 112 during those days.

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The temperature at DFW International Airport reached 106 degrees at 4:35 p.m. Wednesday — making it the hottest day so far this year — and the heat index hit 115, according to the weather service. The low should drop into the 80s and Thursday’s forecast is similar with a slightly lower high temperature of 102, according to the KXAS-TV (NBC5) forecast.

There’s little to no possibility of rain until Saturday night into Sunday when the chances increase slight because of an expected change in pressure, the forecast says.

The weather service is encouraging people to practice heat safety, including drinking plenty of water and avoid spending extended amounts of time outdoors.

Fort Worth was forecast to be the hottest city in the United States on Wednesday, according to a Washington Post analysis. Austin and Dallas were expected to be the third and forth hottest followed by San Antonio in eighth and Houston in ninth.

Due to hot temperatures, lack of precipitation and some breeze, North Texas counties west of Interstate 35 are at an elevated fire danger risk, according to the weather service.

Texas A&M Forest Service has seen an increase in wildfires the last few weeks, including a large human-caused fire in Palo Pinto County.

The latest forecast from KXAS-TV (NBC5):

THURSDAY: Mostly sunny and hot. Low: 81. High: 102. Heat Index up to 109.

FRIDAY: Mostly sunny and hot. Low: 81. High: 101. Heat Index up to 108.

SATURDAY: Mostly sunny and hot. Low: 80. High: 102. Heat Index up to 107.

SUNDAY: Partly cloudy and hot with a slight chance of isolated thunderstorms. Low: 79. High: 98. Heat Index up to 105.

MONDAY: Partly cloudy and hot. Low: 80. High: 100. Heat Index up to 105.