FPCN11 CWTO 191521 AAA UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL REGION ISSUED BY ENVIRONMENT CANADA AT 11:21 A.M. EDT THURSDAY 19 MARCH 2026 FOR TODAY AND FRIDAY. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 3:30 P.M. EDT. CITY OF TORONTO. TODAY..A MIX OF SUN AND CLOUD. WIND BECOMING WEST 20 KM/H GUSTING TO 40 EARLY THIS AFTERNOON. HIGH 7. UV INDEX 4 OR MODERATE. TONIGHT..PARTLY CLOUDY. WIND WEST 20 KM/H BECOMING LIGHT THIS EVENING. LOW ZERO. FRIDAY..CLOUDY. A FEW RAIN SHOWERS BEGINNING EARLY IN THE MORNING. RISK OF FREEZING RAIN IN THE MORNING. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 10. UV INDEX 1 OR LOW. CITY OF HAMILTON. TODAY..BECOMING CLOUDY THIS AFTERNOON WITH 30 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON. WIND BECOMING WEST 20 KM/H GUSTING TO 40 EARLY THIS AFTERNOON. HIGH 7. UV INDEX 4 OR MODERATE. TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING. FOG PATCHES DEVELOPING THIS EVENING. LOW MINUS 1. FRIDAY..CLOUDY. A FEW SHOWERS BEGINNING IN THE MORNING. FOG PATCHES DISSIPATING IN THE MORNING. WIND SOUTHWEST 20 KM/H GUSTING TO 40 BECOMING NORTHWEST 20 GUSTING TO 40 LATE IN THE MORNING THEN LIGHT IN THE AFTERNOON. HIGH 12. UV INDEX 1 OR LOW. BURLINGTON - OAKVILLE. TODAY..A MIX OF SUN AND CLOUD. WIND BECOMING WEST 20 KM/H GUSTING TO 40 EARLY THIS AFTERNOON. HIGH 7. UV INDEX 4 OR MODERATE. TONIGHT..PARTLY CLOUDY. WIND WEST 20 KM/H BECOMING LIGHT THIS EVENING. LOW MINUS 1. FRIDAY..CLOUDY. A FEW RAIN SHOWERS BEGINNING EARLY IN THE MORNING. RISK OF FREEZING RAIN IN THE MORNING. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 IN THE MORNING THEN LIGHT IN THE AFTERNOON. HIGH 10. UV INDEX 1 OR LOW. HALTON HILLS - MILTON. TODAY..A MIX OF SUN AND CLOUD. WIND BECOMING WEST 20 KM/H GUSTING TO 40 EARLY THIS AFTERNOON. HIGH 7. UV INDEX 4 OR MODERATE. TONIGHT..PARTLY CLOUDY. WIND WEST 20 KM/H BECOMING LIGHT THIS EVENING. LOW MINUS 1. FRIDAY..CLOUDY. A FEW RAIN SHOWERS BEGINNING EARLY IN THE MORNING. RISK OF FREEZING RAIN IN THE MORNING. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 10. UV INDEX 1 OR LOW. MISSISSAUGA - BRAMPTON. TODAY..A MIX OF SUN AND CLOUD. WIND BECOMING WEST 20 KM/H GUSTING TO 40 EARLY THIS AFTERNOON. HIGH 7. UV INDEX 4 OR MODERATE. TONIGHT..PARTLY CLOUDY. WIND WEST 20 KM/H BECOMING LIGHT THIS EVENING. LOW MINUS 1. FRIDAY..CLOUDY. A FEW RAIN SHOWERS BEGINNING EARLY IN THE MORNING. RISK OF FREEZING RAIN IN THE MORNING. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 IN THE MORNING. HIGH 11. UV INDEX 1 OR LOW. VAUGHAN - RICHMOND HILL - MARKHAM. TODAY..A MIX OF SUN AND CLOUD. WIND BECOMING WEST 20 KM/H GUSTING TO 40 EARLY THIS AFTERNOON. HIGH 6. UV INDEX 4 OR MODERATE. TONIGHT..PARTLY CLOUDY. WIND NORTH 20 KM/H BECOMING LIGHT THIS EVENING. LOW MINUS 3. WIND CHILL MINUS 8 OVERNIGHT. FRIDAY..CLOUDY. A FEW RAIN SHOWERS BEGINNING EARLY IN THE MORNING. RISK OF FREEZING RAIN IN THE MORNING. WIND BECOMING NORTHWEST 20 KM/H GUSTING TO 40 LATE IN THE MORNING. HIGH 8. WIND CHILL MINUS 7 IN THE MORNING. UV INDEX 1 OR LOW. PICKERING - OSHAWA - SOUTHERN DURHAM REGION. TODAY..A MIX OF SUN AND CLOUD. WIND BECOMING WEST 20 KM/H GUSTING TO 40 EARLY THIS AFTERNOON. HIGH 6. UV INDEX 4 OR MODERATE. TONIGHT..PARTLY CLOUDY. WIND BECOMING SOUTHEAST 20 KM/H BEFORE MORNING. LOW MINUS 2. WIND CHILL MINUS 6 OVERNIGHT. FRIDAY..CLOUDY. A FEW RAIN SHOWERS AND FLURRIES BEGINNING IN THE MORNING AND ENDING LATE IN THE AFTERNOON THEN 30 PERCENT CHANCE OF RAIN SHOWERS. RISK OF FREEZING RAIN IN THE MORNING. WIND SOUTHEAST 20 KM/H BECOMING LIGHT IN THE MORNING. WIND BECOMING NORTHWEST 20 GUSTING TO 40 LATE IN THE MORNING. HIGH 6. UV INDEX 1 OR LOW. REMAINDER UNCHANGED. END