FPCN48 CWAO 221100 ULTRAVIOLET (UV) INDEX FORECAST FOR CANADIAN CITIES ISSUED BY ENVIRONMENT CANADA AT 7:00 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 CHANCE OF SHOWERS 3 MODERATE 2 PM TO 3 PM RANKIN INLET FOG 5 MODERATE 11 AM TO 4 PM YELLOWKNIFE CHANCE OF SHOWERS 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 4 PM CALGARY CHANCE OF SHOWERS 6 HIGH 9 AM TO 5 PM LETHBRIDGE INCREASING CLOUDINESS 6 HIGH 9 AM TO 4 PM RED DEER CHANCE OF SHOWERS 6 HIGH 10 AM TO 5 PM MEDICINE HAT CHANCE OF SHOWERS 6 HIGH 9 AM TO 4 PM BANFF CHANCE OF SHOWERS 6 HIGH 10 AM TO 4 PM GRANDE PRAIRIE CHANCE OF SHOWERS 5 MODERATE 10 AM TO 5 PM SASKATOON CHANCE OF SHOWERS 4 MODERATE 10 AM TO 4 PM REGINA CHANCE OF SHOWERS 6 HIGH 9 AM TO 4 PM YORKTON MAINLY SUNNY 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 A MIX OF SUN AND CLOUD 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.