St. Louis faces dangerous heat through July 4 with highs near 96°F and heat indices over 105°F. Cooling centers are listed by the city.

Triple-digit heat and an Air Quality Action Day hit Raleigh Friday–Saturday. The NWS has issued an Extreme Heat Warning; cooling centers are available.

South and Central Austin residents reported a fishy smell in taps after a raw-water pipe at the Ullrich plant was returned to service in February 2019. Austin Water flushed hydrants and added powdered activated carbon while thousands called 3‑1‑1.