FPCN48 CWAO 221000 ULTRAVIOLET (UV) INDEX FORECAST FOR CANADIAN CITIES ISSUED BY ENVIRONMENT CANADA AT 6:00 A.M. EDT THURSDAY 22 MAY 2025 FOR THURSDAY. UV INDEX IS RELATED TO SKY CONDITIONS AND PRECIPITATIONS. UV INDEX WOULD BE HIGHER THAN STATED DURING SUNNY BREAKS OR IF WEATHER CONDITIONS IMPROVE. ALL TIMES ARE IN LOCAL TIME. THURSDAY LOCATION WEATHER FORECAST UV INDEX CATEGORY TIME ABOVE 3 RESOLUTE FLURRIES 2 LOW NONE INUVIK FREEZING RAIN 2 LOW NONE RANKIN INLET MAINLY CLOUDY 5 MODERATE 12 PM TO 4 PM YELLOWKNIFE CLOUDY 3 MODERATE 11 AM TO 3 PM WHITEHORSE SUNNY 4 MODERATE 10 AM TO 4 PM VANCOUVER CHANCE OF SHOWERS 6 HIGH 9 AM TO 4 PM VICTORIA MAINLY SUNNY 6 HIGH 9 AM TO 4 PM KAMLOOPS CHANCE OF SHOWERS 6 HIGH 9 AM TO 4 PM NANAIMO MAINLY SUNNY 6 HIGH 9 AM TO 4 PM PORT HARDY CHANCE OF SHOWERS 6 HIGH 9 AM TO 4 PM PRINCE RUPERT A MIX OF SUN AND CLOUD 5 MODERATE 10 AM TO 5 PM KELOWNA CHANCE OF SHOWERS 5 MODERATE 9 AM TO 4 PM PRINCE GEORGE CHANCE OF SHOWERS 5 MODERATE 9 AM TO 4 PM CRANBROOK CHANCE OF SHOWERS 5 MODERATE 10 AM TO 5 PM CASTLEGAR CHANCE OF SHOWERS 5 MODERATE 10 AM TO 5 PM EDMONTON CHANCE OF SHOWERS 5 MODERATE 10 AM TO 5 PM CALGARY MAINLY SUNNY 6 HIGH 9 AM TO 5 PM LETHBRIDGE INCREASING CLOUDINESS 5 MODERATE 9 AM TO 4 PM RED DEER CHANCE OF SHOWERS 6 HIGH 9 AM TO 5 PM MEDICINE HAT A MIX OF SUN AND CLOUD 6 HIGH 9 AM TO 5 PM BANFF CHANCE OF SHOWERS 5 MODERATE 10 AM TO 4 PM GRANDE PRAIRIE CHANCE OF SHOWERS 5 MODERATE 10 AM TO 5 PM SASKATOON MAINLY CLOUDY 5 MODERATE 10 AM TO 4 PM REGINA A MIX OF SUN AND CLOUD 6 HIGH 9 AM TO 4 PM YORKTON A MIX OF SUN AND CLOUD 7 HIGH 8 AM TO 4 PM THOMPSON MAINLY SUNNY 6 HIGH 9 AM TO 5 PM WINNIPEG SUNNY 7 HIGH 9 AM TO 5 PM THUNDER BAY MAINLY CLOUDY 4 MODERATE 10 AM TO 4 PM SUDBURY PERIODS OF RAIN 1 LOW NONE WINDSOR CHANCE OF SHOWERS 3 MODERATE 11 AM TO 3 PM TORONTO PERIODS OF RAIN 2 LOW NONE BARRIE PERIODS OF RAIN 2 LOW NONE LONDON SHOWERS 3 MODERATE 11 AM TO 3 PM OTTAWA PERIODS OF RAIN 2 LOW NONE KINGSTON PERIODS OF RAIN 2 LOW NONE MONTREAL CHANCE OF SHOWERS 5 MODERATE 9 AM TO 4 PM SHERBROOKE CHANCE OF SHOWERS 6 HIGH 8 AM TO 4 PM QUEBEC MAINLY CLOUDY 6 HIGH 9 AM TO 4 PM STE-ADELE PERIODS OF RAIN 2 LOW NONE FREDERICTON MAINLY SUNNY 7 HIGH 9 AM TO 5 PM SAINT JOHN NB MAINLY SUNNY 7 HIGH 9 AM TO 5 PM SYDNEY A MIX OF SUN AND CLOUD 7 HIGH 9 AM TO 4 PM HALIFAX MAINLY SUNNY 7 HIGH 9 AM TO 5 PM CHARLOTTETOWN A MIX OF SUN AND CLOUD 7 HIGH 9 AM TO 5 PM ST. JOHN'S NF PERIODS OF DRIZZLE 4 MODERATE 11 AM TO 3 PM GOOSE BAY MAINLY SUNNY 6 HIGH 9 AM TO 4 PM UV CATEGORIES UV INDEX RANGE (ROUNDED VALUES) EXTREME 11 OR HIGHER VERY HIGH 8 TO 10 HIGH 6 TO 7 MODERATE 3 TO 5 LOW 2 OR LESS FOR SUN PROTECTION TIPS YOU CAN VISIT ENVIRONMENT CANADA'S WEB SITE AT WWW.CANADA.CA/UV-INDEX.