As for the photos of melting street signs, KPNX verified via a transportation official that the damage to the sign was age-related, not specifically heat-related. And the photo of the melted trash bin? That was posted on Reddit in 2016, and many doubted its veracity then.
One thing is for certain: The heat in Arizona is no joke. Flights were grounded temporarily this week at Sky Harbor International Airport in Phoenix due to the extreme temperatures. Phoenix emergency rooms have seen an increase in burn cases, most contact burns from bare skin touching pavement or a hot car's interior, azcentral reported. Pet owners are urged to take precautions as an increase in heat-related emergencies has been reported at Arizona animal hospitals.