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Canadian Daily UV Index Forecast

Forecast Regions

* NOTE: Corrected and/or amended bulletins are listed first *

 
FPCN48 CWAO 182100
Ultraviolet (UV) index forecast for Canadian cities issued by Environment Canada
at 5:00 p.m. EDT Thursday 18 April 2024 for Thursday afternoon and Friday.

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

Whitehorse     Sunny                        3         Moderate   12 pm to 3 pm
Vancouver      Sunny                        4         Moderate   10 am to 3 pm
Victoria       Sunny                        4         Moderate   10 am to 3 pm
Kamloops       Mainly sunny                 3         Moderate   10 am to 3 pm
Nanaimo        Sunny                        4         Moderate   10 am to 3 pm
Port Hardy     Sunny                        4         Moderate   11 am to 3 pm
Prince Rupert  Sunny                        4         Moderate   11 am to 4 pm
Kelowna        Mainly sunny                 4         Moderate   10 am to 3 pm
Prince George  Sunny                        3         Moderate   11 am to 3 pm
Cranbrook      Flurries                     1         Low        None
Castlegar      Chance of showers            4         Moderate   11 am to 2 pm

Friday
Location       Weather forecast             UV index  Category   Time above 3

Resolute       Flurries                     1         Low        None
Inuvik         Mainly sunny                 2         Low        None
Rankin Inlet   Mainly sunny                 3         Moderate   11 am to 2 pm
Yellowknife    Sunny                        3         Moderate   11 am to 3 pm
Whitehorse     Sunny                        3         Moderate   12 pm to 3 pm
Vancouver      Sunny                        5         Moderate   10 am to 4 pm
Victoria       Sunny                        5         Moderate   10 am to 4 pm
Kamloops       Mainly sunny                 4         Moderate   10 am to 3 pm
Nanaimo        Sunny                        5         Moderate   10 am to 4 pm
Port Hardy     Sunny                        4         Moderate   10 am to 4 pm
Prince Rupert  Sunny                        4         Moderate   11 am to 4 pm
Kelowna        A mix of sun and cloud       4         Moderate   10 am to 3 pm
Prince George  Sunny                        4         Moderate   10 am to 3 pm
Cranbrook      Mainly sunny                 4         Moderate   11 am to 4 pm
Castlegar      Mainly sunny                 4         Moderate   11 am to 4 pm
Edmonton       Sunny                        4         Moderate   11 am to 3 pm
Calgary        A mix of sun and cloud       4         Moderate   10 am to 4 pm
Lethbridge     Mainly cloudy                4         Moderate   11 am to 3 pm
Red Deer       Mainly sunny                 4         Moderate   11 am to 3 pm
Medicine Hat   Flurries                     4         Moderate   11 am to 3 pm
Banff          A mix of sun and cloud       4         Moderate   11 am to 4 pm
Grande Prairie Sunny                        3         Moderate   11 am to 3 pm
Saskatoon      Clearing                     3         Moderate   11 am to 3 pm
Regina         Flurries                     4         Moderate   10 am to 3 pm
Yorkton        Flurries                     3         Moderate   11 am to 2 pm
Thompson       Periods of light snow        2         Low        None
Winnipeg       Periods of light snow        1         Low        None
Thunder Bay    Flurries or rain showers     0         Low        None
Sudbury        Periods of rain              0         Low        None
Windsor        Showers                      7         High       12 pm to 4 pm
Toronto        Showers                      4         Moderate   12 pm to 4 pm
Barrie         Showers                      4         Moderate   1 pm to 3 pm
London         Showers                      4         Moderate   11 am to 4 pm
Ottawa         Showers                      2         Low        None
Kingston       Showers                      3         Moderate   12 pm to 1 pm
Montreal       Periods of drizzle or rain   5         Moderate    9 am to 3 pm
Sherbrooke     Mainly cloudy                5         Moderate    9 am to 3 pm
Quebec         Chance of showers            4         Moderate   10 am to 3 pm
Ste-Adele      Rain or drizzle              1         Low        None
Fredericton    Mainly sunny                 5         Moderate   10 am to 4 pm
Saint John NB  Mainly sunny                 5         Moderate   10 am to 4 pm
Sydney         Mainly sunny                 5         Moderate   10 am to 4 pm
Halifax        Mainly sunny                 5         Moderate   10 am to 4 pm
Charlottetown  Mainly sunny                 5         Moderate   10 am to 4 pm
St. John's NF  Rain                         1         Low        None
Goose Bay      A mix of sun and cloud       4         Moderate   10 am to 3 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.

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