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Forecast and Conditions for Seattle, Washington

Updated: 1:53 PM PDT on August 18, 2018
Observed at Seattle Boeing, Washington
Temperature 74°F
Humidity 46%
Dew Point 52°F
Wind Variable at 5 mph
Pressure 30.17 in (Falling)
Conditions Clear
Visibility 10.0 miles
Clouds Clear (CLR) : -
Yesterday's Maximum 73°F
Yesterday's Minimum 55°F
Normal high 74°F
Normal low 55°F
Record high 88°F (1991)
Record low 47°F (1951)
Sunrise06:09 AM (PDT)
Sunset08:15 PM (PDT)
Moon Rise02:41 PM (PDT)
Moon SetNo Moon Set
Moon Phase
Forecast as of 9:04 AM PDT on August 18, 2018

Saturday
Mainly sunny. High 78F. Winds NW at 5 to 10 mph.
Saturday Night
A clear sky. Low 59F. Winds light and variable.
Sunday
A mainly sunny sky. High near 80F. Winds NNW at 5 to 10 mph.
Sunday Night
Clear skies. Low 61F. Winds light and variable.
Monday
Sunny skies. High 86F. Winds N at 10 to 15 mph.
Monday Night
Clear skies. Low 63F. Winds NNE at 5 to 10 mph.
Tuesday
A mainly sunny sky. High 92F. Winds N at 5 to 10 mph.
Tuesday Night
Clear. Low 63F. Winds NE at 5 to 10 mph.
Wednesday
Sunny. High near 85F. Winds SW at 5 to 10 mph.
Wednesday Night
Generally fair. Low 59F. Winds SSW at 5 to 10 mph.
Thursday
Cloudy early with partial sunshine expected late. High 73F. Winds SW at 5 to 10 mph.
Thursday Night
Partly cloudy skies during the evening will give way to cloudy skies overnight. Low 58F. Winds SW at 5 to 10 mph.
Friday
Cloudy early with partial sunshine expected late. High 74F. Winds light and variable.
Friday Night
Partly cloudy skies. Low 56F. Winds light and variable.
Saturday
Mostly cloudy skies early will become partly cloudy later in the day. High near 75F. Winds light and variable.
Saturday Night
Partly cloudy early with increasing clouds overnight. Low 58F. Winds light and variable.
Sunday
Mostly cloudy skies early will become partly cloudy later in the day. High around 75F. Winds W at 5 to 10 mph.
Sunday Night
Partly cloudy skies. Low 57F. Winds WSW at 5 to 10 mph.
Monday
A few passing clouds, otherwise generally sunny. High 76F. Winds WSW at 5 to 10 mph.
Monday Night
Clear skies. Low 57F. Winds light and variable.
Tuesday
Mostly sunny skies. High 74F. Winds WSW at 5 to 10 mph.
Tuesday Night
Clear skies. Low 57F. Winds light and variable.

Air Quality Alert, Special Statement

Statement as of 11:31 am PDT on August 18, 2018


... Air quality alert in effect from 10 am Sunday to 5 PM PDT
Wednesday...

An air quality alert has been issued by the National Weather Service
in Seattle, in cooperation with Washington state department of
ecology and other local agencies. It is in effect from 10 am Sunday
to 5 PM PDT Wednesday.

Unhealthy air will become common across western Washington due to
the large wildfires currently burning in the Washington Cascades and
British Columbia. Some improvement in ventilation is expected late
on Wednesday.

Pollutants in smoke can cause burning eyes... runny nose... aggravate
heart and lung diseases... and aggravate other serious health
problems. Limit outdoor activities and keep children indoors if it
is smoky. Follow advice from your physician or other medical
services if you have a heart or respiratory condition.

For additional information on wildland fire smoke impacting
Washington visit the Washington smoke blog at
http://wasmoke.Blogspot.Com

For current Washington air quality levels, visit
https://fortress.WA.Gov/ecy/enviwa/ or airnow.Gov.

You may also contact your local air quality agency.

Information about air quality is on the Washington department of
ecology web site at http://www.Ecy.WA.Gov/air.Html


Www.Weather.Gov/Seattle

1131 am PDT Sat Aug 18 2018

... Air quality alert in effect from 10 am Sunday to 5 PM PDT
Wednesday...

An air quality alert has been issued by the National Weather Service
in Seattle, in cooperation with Washington state department of
ecology and other local agencies. It is in effect from 10 am Sunday
to 5 PM PDT Wednesday.

Unhealthy air will become common across western Washington due to
the large wildfires currently burning in the Washington Cascades and
British Columbia. Some improvement in ventilation is expected late
on Wednesday.

Pollutants in smoke can cause burning eyes... runny nose... aggravate
heart and lung diseases... and aggravate other serious health
problems. Limit outdoor activities and keep children indoors if it
is smoky. Follow advice from your physician or other medical
services if you have a heart or respiratory condition.

For additional information on wildland fire smoke impacting
Washington visit the Washington smoke blog at
http://wasmoke.Blogspot.Com

For current Washington air quality levels, visit
https://fortress.WA.Gov/ecy/enviwa/ or airnow.Gov.

You may also contact your local air quality agency.

Information about air quality is on the Washington department of
ecology web site at http://www.Ecy.WA.Gov/air.Html


Www.Weather.Gov/Seattle


924 am PDT Sat Aug 18 2018


... Smoke infiltrating parts of western Washington today and
becoming more widespread tonight into Sunday morning...

Wildfires on Vancouver Island producing low level smoke has
drifted southeast, infiltrating parts of Clallam and Jefferson
counties. Air quality for sensitive groups is occurring and should
be expected today with a period of slight improvement later today
or tonight as the flow switches offshore. This will eventually
worsen air quality along the Strait and other areas of Clallam
and Jefferson counties by Sunday morning. Air quality will likely
deteriorate further to unhealthy levels Sunday through Tuesday.

Smoke from British Columbia wildfires can be seen on visible
satellite imagery moving into the north and central Cascades, and
north interior from the northeast. Elevated smoke will likely
increase today over other parts of western Washington. This smoke
will gradually mix down and start to affect air quality at the
surface in the north interior, olympic peninsula, and Cascades
Sunday morning. Air quality will likely deteriorate over most
remaining areas of western Washington Sunday afternoon into early
next week. An air quality alert may be issued later today for the
Sunday to Tuesday time period. Continue to monitor forecasts as
updates are likely today.

Temperatures on Monday and Tuesday will be in the 80s to low 90s.
A marine push developing Wednesday may begin to improve air
quality to some degree.


924 am PDT Sat Aug 18 2018


... Smoke infiltrating parts of western Washington today and
becoming more widespread tonight into Sunday morning...

Wildfires on Vancouver Island producing low level smoke has
drifted southeast, infiltrating parts of Clallam and Jefferson
counties. Air quality for sensitive groups is occurring and should
be expected today with a period of slight improvement later today
or tonight as the flow switches offshore. This will eventually
worsen air quality along the Strait and other areas of Clallam
and Jefferson counties by Sunday morning. Air quality will likely
deteriorate further to unhealthy levels Sunday through Tuesday.

Smoke from British Columbia wildfires can be seen on visible
satellite imagery moving into the north and central Cascades, and
north interior from the northeast. Elevated smoke will likely
increase today over other parts of western Washington. This smoke
will gradually mix down and start to affect air quality at the
surface in the north interior, olympic peninsula, and Cascades
Sunday morning. Air quality will likely deteriorate over most
remaining areas of western Washington Sunday afternoon into early
next week. An air quality alert may be issued later today for the
Sunday to Tuesday time period. Continue to monitor forecasts as
updates are likely today.

Temperatures on Monday and Tuesday will be in the 80s to low 90s.
A marine push developing Wednesday may begin to improve air
quality to some degree.


Www.Weather.Gov/Seattle
Mercer

1114 am PDT Fri Aug 17 2018

... Smoke likely to return beginning Sunday...

Low level smoke is likely to return to western Washington
beginning Sunday. Air quality could possibly deteriorate to
unhealthy levels Monday and Tuesday.

The surface flow pattern will turn offshore and northerly on
Sunday. Smoke from British Columbia fires is likely to spread
south into western Washington. Northern areas will be affected
first, but eventually all of western Washington could have thick
smoke near the surface. It is possible that air quality could
return to the unhealthy levels of earlier this week on Monday and
Tuesday.

Temperatures on Monday and Tuesday will be in the 80s to low 90s.
Current forecasts call for a marine push Tuesday night or
Wednesday that will cool things off and also push most of the
smoke out of the area.



Www.Weather.Gov/Seattle

1114 am PDT Fri Aug 17 2018

... Smoke likely to return beginning Sunday...

Low level smoke is likely to return to western Washington
beginning Sunday. Air quality could possibly deteriorate to
unhealthy levels Monday and Tuesday.

The surface flow pattern will turn offshore and northerly on
Sunday. Smoke from British Columbia fires is likely to spread
south into western Washington. Northern areas will be affected
first, but eventually all of western Washington could have thick
smoke near the surface. It is possible that air quality could
return to the unhealthy levels of earlier this week on Monday and
Tuesday.

Temperatures on Monday and Tuesday will be in the 80s to low 90s.
Current forecasts call for a marine push Tuesday night or
Wednesday that will cool things off and also push most of the
smoke out of the area.


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