The heat will be most severe along and southeast of the I-99/US-220 corridor, where heat index values are likely to exceed 100 degrees. Residents are advised to take precautions such as staying hydrated, avoiding prolonged outdoor exposure, and checking on vulnerable populations like elderly neighbors and those without air conditioning.

A gradual warming trend will begin Sunday, with temperatures initially in the upper 70s to low 80s. By Wednesday, a strong upper-level ridge will push temperatures into the low to mid-90s across most of the state. Humidity will increase substantially, with heat index values potentially reaching or exceeding 100 degrees on Thursday.

Similar to cooling pillows, cooling sheets can help dissipate your body heat. Cooling sheets are never made with materials like flannel or heavy cotton that trap heat. The best sheets for the summer will be made with bamboo, cotton, silk, Tencel, linen, polyester, microfiber or lyocell.

Chicago is about to feel its hottest stretch of 2025 so far. Intense heat and humidity will push the heat index to a sweltering 105 to 110 degrees, making it dangerously hot for prolonged outdoor activity.

We Michiganders have northern constitutions, meaning our bodies have grown accustomed to handling colder weather. When heat waves hit, we’re “built to wilt,” and really hot weather can make us feel more uncomfortable than people who live in hotter climates. It can even make us feel sick.

Wednesday started quietly and comfortably with morning temperatures in the upper 60s. However, by the afternoon, highs near 90 degrees and rising humidity will exacerbate the conditions. Western parts of the state are under a heat advisory and experiencing poor air quality.

Phoenix braces for extreme heat with highs expected to reach 109 degrees amidst warnings of heat-related risks.

A severe heat dome is set to trap over 90 million Americans. The National Weather Service issues health alerts from Nebraska to Florida. Mississippi Valley and Southeast brace for dangerous heat. Temperatures may cross 100°F.