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TL;DR news on Heat warning at August 28, 2023

Heat indexes of up to 105 degrees or higher are expected for portions of Missouri, Iowa and Illinois. After unseasonably cool weather in July, the mercury is quickly climbing once again, triggering this summer's latestheat warning issued by Environment Canada earlier today. "A warm and humid air mass will enter Quebec early this week and persist into Friday," the ECCC said in its warning. 10 warning of temperatures between 29 and 35 degrees for day time highs, which is upwards of 12 degrees above normal for this time of year. Heat wave California's Dixie Fire, facing explosive growth, is now eight times the size of San Francisco.