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ST. LOUIS – Dangerous heat is hitting the St. Louis area again, and a Heat Advisory is in effect through 7 p.m. Thursday.

The following Missouri counties are under the advisory: Franklin, Jefferson, Lincoln, St. Charles, City of St. Louis, St. Louis, Warren. Three Illinois counties, Madison, Monroe, and St. Clair, are also under the advisory.

Temperatures are expected to reach the low-90s Thursday and dew points in the mid-70s. The heat index is expected to reach 106 degrees in some areas, which means there is an increased risk of heat-related illnesses and stress.

LINK: Get the latest forecast

Avoid the outdoors if possible. The elderly and young children should stay indoors in air conditioning. Never leave a person or a pet inside a vehicle, not even for a minute. Air inside can reach lethal temperatures within minutes.

Anyone working or spending time outside should drink plenty of water, wear lightweight, loose-fitting clothing, and take breaks in the shade or air conditioning.

If you need to find a cooling center or need energy assistance, call the United Way at 800-427-4626 or dial 211 from a landline. Cool Down St. Louis is also available to help. Call them at 314-241-7668.

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