Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Columbia River The Dalles 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Columbia River The Dalles

Oregon, United States Of America

Long range weather outlook for Columbia River The Dalles includes 14 day forecast summary:

The outlook for Columbia River The Dalles in the two weeks ahead shows the average daytime maximum temperature will be around 27°C, with a high for the two weeks of 31°C expected on the afternoon of Friday 21st. The mean minimum temperature will be 10°C, dipping to its lowest on the morning of Monday 24th at 7°C. Expect the next 14 days remain predominantly dry. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Thu 20
Jun		01:00

W
W

 3 / 6 mph 51 / 51°F 83% 1014 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 32%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

 2 / 4 mph 51 / 51°F 84% 1014 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 18%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNE
NNE

 1 / 2 mph 67 / 65°F 70% 1014 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NE
NE

 4 / 5 mph 79 / 78°F 50% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NE
NE

 4 / 5 mph 86 / 82°F 36% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 8%
Most Significant Cloud Type: high
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNW
NNW

 3 / 4 mph 88 / 84°F 33% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 80%
Most Significant Cloud Type: high
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

 7 / 11 mph 75 / 77°F 62% 1012 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 1%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

 4 / 9 mph 62 / 62°F 75% 1014 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 10%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 21
Jun		22:00

W
W

 4 / 8 mph 58 / 58°F 61% 1014 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 19%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 22
Jun		01:00

WNW
WNW

 3 / 6 mph 55 / 55°F 58% 1014 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 62%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

 2 / 5 mph 52 / 53°F 58% 1014 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 32%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNW
NNW

 0 / 0 mph 66 / 64°F 50% 1014 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 4%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NE
NE

 1 / 1 mph 80 / 77°F 36% 1013 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 6%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

 2 / 2 mph 88 / 82°F 26% 1012 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 7%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

 8 / 9 mph 85 / 82°F 39% 1011 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

 9 / 10 mph 71 / 68°F 71% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 5%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

 6 / 10 mph 57 / 56°F 93% 1014 mb
Low level cloud: 29%
Mid level cloud: 17%
High level cloud: 3%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 23
Jun		01:00

W
W

 4 / 7 mph 56 / 56°F 85% 1015 mb
Low level cloud: 23%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

W
W

 5 / 9 mph 53 / 52°F 84% 1015 mb
Low level cloud: 15%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

 6 / 6 mph 62 / 60°F 67% 1017 mb
Low level cloud: 8%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

W
W

 1 / 1 mph 72 / 68°F 49% 1016 mb
Low level cloud: 20%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

 5 / 6 mph 77 / 76°F 39% 1015 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NW
NW

 10 / 12 mph 73 / 75°F 43% 1015 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

 8 / 9 mph 64 / 62°F 61% 1016 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

 4 / 9 mph 50 / 49°F 87% 1018 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 24
Jun		01:00

WNW
WNW

 3 / 6 mph 47 / 47°F 93% 1018 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NW
NW

 2 / 5 mph 44 / 44°F 94% 1019 mb
Low level cloud: 2%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNE
NNE

 3 / 3 mph 58 / 57°F 71% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NNE
NNE

 5 / 6 mph 69 / 67°F 50% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NE
NE

 5 / 6 mph 77 / 76°F 40% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNE
NNE

 4 / 5 mph 80 / 78°F 39% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

 6 / 7 mph 73 / 76°F 63% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

 5 / 8 mph 59 / 59°F 86% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 25
Jun		01:00

WNW
WNW

 2 / 5 mph 52 / 53°F 89% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

 2 / 4 mph 50 / 49°F 91% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NE
NE

 1 / 1 mph 64 / 62°F 72% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

E
E

 1 / 2 mph 78 / 77°F 49% 1014 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 7%
Most Significant Cloud Type: high
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

 3 / 3 mph 85 / 81°F 37% 1013 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 6%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

 10 / 11 mph 82 / 79°F 33% 1013 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

 9 / 13 mph 67 / 65°F 56% 1014 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WSW
WSW

 4 / 9 mph 53 / 53°F 79% 1016 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 1%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 26
Jun		01:00

SW
SW

 4 / 7 mph 51 / 50°F 87% 1017 mb
Low level cloud: 2%
Mid level cloud: 100%
High level cloud: 14%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

 4 / 6 mph 53 / 52°F 84% 1017 mb
Low level cloud: 49%
Mid level cloud: 62%
High level cloud: 0%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

 5 / 6 mph 60 / 60°F 77% 1018 mb
Low level cloud: 93%
Mid level cloud: 74%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

 6 / 7 mph 66 / 63°F 68% 1019 mb
Low level cloud: 47%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

 8 / 9 mph 71 / 69°F 50% 1019 mb
Low level cloud: 58%
Mid level cloud: 77%
High level cloud: 0%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

 10 / 12 mph 69 / 69°F 47% 1019 mb
Low level cloud: 16%
Mid level cloud: 55%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 9 / 10 mph 65 / 62°F 62% 1019 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 2%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

 4 / 9 mph 50 / 49°F 92% 1020 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 17%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Thu 27
Jun		04:00

NNW
NNW

 3 / 6 mph 52 / 51°F 95% 1018 mb
Low level cloud: 9%
Mid level cloud: 0%
High level cloud: 87%
Most Significant Cloud Type: medium
28%
0.0 In
10:00

WSW
WSW

 0 / 0 mph 70 / 70°F 49% 1018 mb
Low level cloud: 86%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
94%
0.0 In
16:00

NNE
NNE

 5 / 6 mph 79 / 79°F 40% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 16%
Most Significant Cloud Type: high
16%
0.0 In
22:00

W
W

 4 / 8 mph 50 / 49°F 94% 1020 mb
Low level cloud: 2%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
30%
0.0 In
Fri 28
Jun		04:00

WSW
WSW

 2 / 3 mph 48 / 48°F 96% 1019 mb
Low level cloud: 23%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
26%
0.0 In
10:00

S
S

 6 / 12 mph 56 / 55°F 91% 1017 mb
Low level cloud: 88%
Mid level cloud: 59%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
16:00

NE
NE

 6 / 9 mph 78 / 78°F 42% 1013 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 32%
Most Significant Cloud Type: medium
3%
0.0 In
22:00

W
W

 5 / 10 mph 56 / 55°F 84% 1015 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 34%
Most Significant Cloud Type: medium
4%
0.0 In
Sat 29
Jun		04:00

NW
NW

 2 / 4 mph 56 / 56°F 90% 1014 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 21%
Most Significant Cloud Type: medium
4%
0.0 In
10:00

NE
NE

 2 / 3 mph 79 / 80°F 46% 1017 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 5%
Most Significant Cloud Type: medium
9%
0.0 In
16:00

W
W

 10 / 15 mph 80 / 80°F 42% 1013 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 99%
Most Significant Cloud Type: medium
9%
0.0 In
22:00

WNW
WNW

 4 / 7 mph 63 / 63°F 83% 1018 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 4%
Most Significant Cloud Type: medium
4%
0.0 In
Sun 30
Jun		04:00

WSW
WSW

 2 / 4 mph 55 / 55°F 88% 1018 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
0.0 In
10:00

NE
NE

 4 / 5 mph 82 / 83°F 49% 1020 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
16:00

WNW
WNW

 9 / 14 mph 78 / 79°F 51% 1016 mb
Low level cloud: 3%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
4%
0.0 In
22:00

W
W

 5 / 9 mph 63 / 63°F 81% 1020 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
Mon 01
Jul		04:00

W
W

 3 / 4 mph 49 / 49°F 94% 1020 mb
Low level cloud: 26%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
25%
0.0 In
10:00

NNE
NNE

 4 / 6 mph 82 / 83°F 47% 1020 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
16:00

NNW
NNW

 6 / 10 mph 77 / 78°F 39% 1018 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
0.0 In
22:00

W
W

 5 / 9 mph 59 / 59°F 92% 1017 mb
Low level cloud: 1%
Mid level cloud: 7%
High level cloud: 1%
Most Significant Cloud Type: medium
11%
0.0 In
Tue 02
Jul		04:00

NNW
NNW

 3 / 5 mph 50 / 49°F 95% 1018 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

NNE
NNE

 4 / 5 mph 76 / 78°F 49% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

NNE
NNE

 7 / 11 mph 84 / 82°F 32% 1010 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
1%
0.0 In
22:00

WNW
WNW

 5 / 8 mph 54 / 53°F 85% 1013 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 2%
Most Significant Cloud Type: medium
3%
0.0 In
Wed 03
Jul		04:00

WNW
WNW

 3 / 5 mph 54 / 55°F 94% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

NNE
NNE

 3 / 4 mph 73 / 76°F 47% 1013 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
16:00

W
W

 8 / 12 mph 83 / 82°F 38% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

W
W

 4 / 7 mph 53 / 52°F 88% 1015 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
Thu 04
Jul		04:00

WSW
WSW

 2 / 4 mph 54 / 54°F 92% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
0%
0.0 In
10:00

NNE
NNE

 4 / 5 mph 69 / 69°F 48% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
16:00

W
W

 10 / 15 mph 79 / 79°F 35% 1015 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
22:00

W
W

 4 / 7 mph 53 / 52°F 85% 1020 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
Fri 05
Jul		04:00

WNW
WNW

 2 / 3 mph 51 / 52°F 93% 1021 mb
Low level cloud: 1%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
2%
0.0 In
10:00

NNE
NNE

 4 / 5 mph 68 / 68°F 49% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 98%
Most Significant Cloud Type: high
98%
0.0 In
16:00

NNE
NNE

 4 / 6 mph 88 / 85°F 28% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

WNW
WNW

 4 / 8 mph 57 / 57°F 82% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 22%
Most Significant Cloud Type: high
21%
0.0 In

Other Locations Near to Columbia River The Dalles

The day label given represents the local day relative to the local time for the location you are looking at.
(More Info)

Day

This time is corrected for local time zones and where possible for daylight saving times.
(More Info)

Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
(More Info)

Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
(More Info)

Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
(More Info)

Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
(More Info)

Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
(More Info)

Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
(More Info)

Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
(More Info)

Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
(More Info)

Pressure