Overview

• In Kamloops Environment Canada’s heat warning through August 11 has activated a Heat Response Pass granting free swimming and skating at public cooling sites.
• Nearly 30 million Americans remain under heat advisories or extreme heat warnings through midweek with Death Valley forecast to hit 121°F and Las Vegas and Phoenix facing highs of 110°F–111°F.
• The UK Health Security Agency has issued amber alerts for southern England and yellow warnings elsewhere ahead of consecutive days above 30°C, with peaks in the mid-30s expected this week.
• Meteorologists attribute the wave’s persistence to a blocking high-pressure system combined with remnants of Tropical Storm Dexter channeling warm air northward.
• Health officials warn that seniors, people with chronic conditions and other vulnerable groups should seek cool spaces, stay hydrated and check on neighbors to prevent heat-related illnesses.