Extreme heat during the Hajj pilgrimage has become a significant concern, with some reports indicating that conditions have already breached human survivability limits. The heat is attributed to climate change, which is expected to make weather conditions at the Hajj increasingly dangerous in the coming decades. There are varying accounts of the impact, with one report stating that over 1,300 pilgrims died due to heat and humidity, while others warn of a growing threat without specifying current casualties.