First Alert Forecast 6 hours ago First Alert Forecast: Midweek Heat Wednesday will be the hottest day of the week, followed by gradual cooling heading into the weekend. Meteorologist David Biggar has the evening forecast for Tuesday, October 22, 2024. US & World Videos 2:58 First Alert Forecast: Warm days 3:45 First Alert Forecast: Midweek Warmth 3:01 First Alert Forecast: Warm and dry week ahead 3:46 First Alert Forecast: Red flag warnings 4:12 First Alert Forecast: Deep marine layer