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Syowa 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Syowa

Antarctica

Long range weather outlook for Syowa includes 14 day forecast summary:

The outlook for Syowa in the two weeks ahead shows the average daytime maximum temperature will be around -16°C, with a high for the two weeks of -7°C expected on the morning of Saturday 13th. The mean minimum temperature will be -25°C, dipping to its lowest on the morning of Friday 19th at -32°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
Sat 13
Sep		15:00

SE
SE

 7 / 15 mph 18 / 8°F 75% 962 mb
Low level cloud: 0%
Mid level cloud: 94%
High level cloud: 100%
Most Significant Cloud Type: medium
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 23 / 49 mph 16 / -2°F 50% 963 mb
Low level cloud: 0%
Mid level cloud: 36%
High level cloud: 32%
Most Significant Cloud Type: medium
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NW
NW

 5 / 9 mph 12 / 4°F 97% 969 mb
Low level cloud: 52%
Mid level cloud: 77%
High level cloud: 20%
Most Significant Cloud Type: low
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 14
Sep		00:00

ESE
ESE

 4 / 9 mph 12 / 5°F 75% 972 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 13%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ESE
ESE

 7 / 15 mph 9 / -2°F 72% 974 mb
Low level cloud: 0%
Mid level cloud: 70%
High level cloud: 96%
Most Significant Cloud Type: medium
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 12 / 26 mph 7 / -9°F 59% 976 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

 9 / 20 mph 10 / -3°F 60% 977 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 100%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

 6 / 13 mph 9 / -2°F 73% 978 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 9 / 19 mph 6 / -8°F 69% 979 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 33%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 5 / 10 mph 4 / -5°F 77% 980 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

 4 / 10 mph 2 / -8°F 80% 982 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 4%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 15
Sep		00:00

NE
NE

 5 / 11 mph -2 / -13°F 77% 984 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 6%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 2 / 4 mph -3 / -9°F 78% 985 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 34%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

 2 / 5 mph 0 / -6°F 79% 987 mb
Low level cloud: 0%
Mid level cloud: 72%
High level cloud: 100%
Most Significant Cloud Type: medium
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NW
NW

 3 / 4 mph 5 / -1°F 84% 988 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

 1 / 1 mph 4 / 4°F 89% 989 mb
Low level cloud: 4%
Mid level cloud: 100%
High level cloud: 18%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

 5 / 11 mph -8 / -20°F 83% 989 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 19%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

 5 / 11 mph -12 / -25°F 74% 990 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 10%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 6 / 12 mph -14 / -28°F 72% 990 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 1%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 16
Sep		00:00

ESE
ESE

 6 / 12 mph -16 / -31°F 73% 990 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
03:00

ESE
ESE

 5 / 11 mph -17 / -31°F 71% 990 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
06:00

SE
SE

 4 / 9 mph -13 / -25°F 73% 990 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
09:00

SSE
SSE

 2 / 4 mph 1 / -5°F 66% 990 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

 3 / 6 mph -2 / -10°F 76% 990 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

 5 / 11 mph -16 / -29°F 77% 990 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
18:00

SE
SE

 5 / 11 mph -18 / -32°F 74% 990 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
21:00

SE
SE

 5 / 11 mph -19 / -32°F 72% 990 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
Wed 17
Sep		00:00

SE
SE

 5 / 11 mph -19 / -33°F 72% 990 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
03:00

SSE
SSE

 5 / 11 mph -20 / -34°F 74% 989 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
06:00

SSE
SSE

 5 / 10 mph -15 / -28°F 77% 988 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
09:00

S
S

 5 / 10 mph -3 / -15°F 82% 987 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
12:00

S
S

 7 / 14 mph -5 / -19°F 85% 986 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
15:00

SSE
SSE

 5 / 10 mph -19 / -32°F 80% 985 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
18:00

SE
SE

 4 / 8 mph -20 / -31°F 73% 984 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
21:00

ENE
ENE

 4 / 9 mph -19 / -32°F 73% 983 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
Thu 18
Sep		00:00

ENE
ENE

 6 / 12 mph -17 / -32°F 74% 983 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
03:00

ESE
ESE

 6 / 12 mph -21 / -36°F 80% 983 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
06:00

E
E

 3 / 6 mph -17 / -25°F 80% 983 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

 2 / 4 mph -5 / -10°F 69% 984 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

 2 / 4 mph -3 / -9°F 88% 984 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

 7 / 14 mph -16 / -32°F 81% 986 mb
Low level cloud: 12%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

 7 / 15 mph -18 / -35°F 78% 988 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

 6 / 12 mph -21 / -37°F 77% 989 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
Fri 19
Sep		00:00

SE
SE

 5 / 11 mph -23 / -38°F 74% 989 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
03:00

SE
SE

 4 / 9 mph -25 / -39°F 74% 990 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
06:00

SE
SE

 3 / 7 mph -21 / -31°F 76% 990 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
09:00

SSW
SSW

 2 / 2 mph -5 / -5°F 72% 990 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

S
S

 3 / 5 mph -9 / -17°F 83% 990 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
15:00

SE
SE

 5 / 11 mph -22 / -38°F 80% 991 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
18:00

SE
SE

 7 / 15 mph -21 / -39°F 71% 991 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
21:00

SE
SE

 8 / 16 mph -21 / -39°F 70% 991 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
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 20
Sep		00:00

SSE
SSE

 6 / 12 mph -33 / -51°F 79% 991 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

SSE
SSE

 4 / 8 mph -9 / -19°F 76% 988 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 35%
Most Significant Cloud Type: medium
45%
0.0 In
12:00

S
S

 3 / 6 mph -12 / -21°F 86% 983 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 7%
Most Significant Cloud Type: medium
4%
0.0 In
18:00

SE
SE

 3 / 6 mph -10 / -18°F 78% 992 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 3%
Most Significant Cloud Type: medium
8%
0.0 In
Sun 21
Sep		00:00

SSE
SSE

 3 / 5 mph 5 / -2°F 77% 999 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

ESE
ESE

 4 / 9 mph -17 / -29°F 77% 996 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

SSW
SSW

 5 / 6 mph 0 / -10°F 84% 999 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
18:00

SE
SE

 6 / 12 mph 0 / -12°F 70% 997 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 20%
Most Significant Cloud Type: high
20%
0.0 In
Mon 22
Sep		00:00

SSE
SSE

 3 / 7 mph -21 / -32°F 71% 996 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
0.0 In
06:00

SSE
SSE

 5 / 11 mph -9 / -22°F 75% 995 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

E
E

 1 / 2 mph 10 / 10°F 72% 994 mb
Low level cloud: 0%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
18:00

ESE
ESE

 5 / 11 mph 0 / -11°F 71% 999 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
Tue 23
Sep		00:00

ESE
ESE

 5 / 10 mph -14 / -27°F 70% 998 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
0.0 In
06:00

ESE
ESE

 4 / 8 mph 2 / -6°F 68% 998 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
12:00

N
N

 2 / 2 mph 12 / 12°F 68% 998 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
18:00

ESE
ESE

 4 / 10 mph -13 / -26°F 66% 1001 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Wed 24
Sep		00:00

NE
NE

 44 / 51 mph 25 / 5°F 56% 988 mb
Low level cloud: 17%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

SSW
SSW

 2 / 5 mph -12 / -19°F 76% 1001 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
12:00

NE
NE

 42 / 49 mph 26 / 7°F 82% 986 mb
Low level cloud: 32%
Mid level cloud: 50%
High level cloud: 100%
Most Significant Cloud Type: low
61%
0.1 In
18:00

ESE
ESE

 6 / 13 mph -12 / -27°F 74% 1001 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Thu 25
Sep		00:00

NE
NE

 32 / 36 mph 21 / 2°F 84% 987 mb
Low level cloud: 22%
Mid level cloud: 32%
High level cloud: 100%
Most Significant Cloud Type: low
45%
0.1 In
06:00

E
E

 3 / 6 mph -1 / -7°F 74% 999 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

NE
NE

 40 / 53 mph 26 / 7°F 59% 983 mb
Low level cloud: 7%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
18:00

E
E

 5 / 11 mph -13 / -26°F 75% 996 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Fri 26
Sep		00:00

NE
NE

 38 / 43 mph 25 / 6°F 86% 982 mb
Low level cloud: 51%
Mid level cloud: 33%
High level cloud: 33%
Most Significant Cloud Type: low
66%
0.1 In
06:00

E
E

 3 / 7 mph -11 / -20°F 74% 992 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

ENE
ENE

 12 / 14 mph 30 / 20°F 61% 979 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
18:00

ESE
ESE

 5 / 10 mph -22 / -36°F 73% 991 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Sat 27
Sep		00:00

SSE
SSE

 8 / 16 mph 15 / 5°F 71% 988 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 34%
Most Significant Cloud Type: medium
45%
0.0 In
06:00

ESE
ESE

 4 / 8 mph -16 / -28°F 67% 999 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

SW
SW

 3 / 6 mph 16 / 11°F 83% 992 mb
Low level cloud: 0%
Mid level cloud: 34%
High level cloud: 32%
Most Significant Cloud Type: medium
34%
0.0 In
18:00

ESE
ESE

 6 / 13 mph -19 / -35°F 73% 1005 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 35%
Most Significant Cloud Type: medium
4%
0.0 In
Sun 28
Sep		00:00

ESE
ESE

 5 / 11 mph 1 / -10°F 76% 1006 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
0.0 In
06:00

NE
NE

 16 / 26 mph 9 / -8°F 79% 1001 mb
Low level cloud: 59%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

NNE
NNE

 4 / 5 mph 17 / 10°F 80% 1005 mb
Low level cloud: 1%
Mid level cloud: 17%
High level cloud: 16%
Most Significant Cloud Type: medium
20%
0.0 In
18:00

NE
NE

 59 / 67 mph 30 / 10°F 75% 992 mb
Low level cloud: 13%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
87%
0.1 In

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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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.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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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.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

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