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Niijima Island 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Niijima Island

Japan

Long range weather outlook for Niijima Island includes 14 day forecast summary:

For Niijima Island in the coming two weeks the average daytime maximum temperature will be around 18°C, with a high for the two weeks of 24°C expected on the morning of Tuesday 23rd. The mean minimum temperature will be 14°C, dipping to its lowest on the morning of Saturday 13th at 9°C. Expect the coming 14 days to have some days seeing a little precipitation and some days with rain. It looks like Sunday 14th will have the most precipitation with an accumulation of around 28.0mm. On the whole winds are likely to be fresh. Expect the strongest wind on the evening of Sunday 14th, coming from a westerly direction, and reaching around 51mph.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 13
Dec		18:00

ESE
ESE

 18 / 23 mph 60 / 60°F 78% 1023 mb
Low level cloud: 93%
Mid level cloud: 47%
High level cloud: 8%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

ESE
ESE

 11 / 15 mph 64 / 64°F 74% 1020 mb
Low level cloud: 92%
Mid level cloud: 15%
High level cloud: 56%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sun 14
Dec		00:00

NNE
NNE

 13 / 16 mph 64 / 64°F 80% 1016 mb
Low level cloud: 79%
Mid level cloud: 54%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

 1 / 1 mph 65 / 65°F 82% 1012 mb
Low level cloud: 90%
Mid level cloud: 47%
High level cloud: 90%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NW
NW

 0 / 0 mph 64 / 64°F 90% 1009 mb
Low level cloud: 92%
Mid level cloud: 71%
High level cloud: 45%
Most Significant Cloud Type: low
100%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
09:00

NE
NE

 13 / 16 mph 65 / 65°F 92% 1003 mb
Low level cloud: 99%
Mid level cloud: 84%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.5 In of precipitation over the past 3 hours.
0.5 In
12:00

N
N

 26 / 37 mph 54 / 48°F 92% 999 mb
Low level cloud: 99%
Mid level cloud: 42%
High level cloud: 90%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
15:00

W
W

 47 / 55 mph 67 / 67°F 63% 1001 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 36%
Most Significant Cloud Type: high
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

 51 / 69 mph 55 / 47°F 67% 1004 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

W
W

 47 / 65 mph 53 / 44°F 66% 1006 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
Mon 15
Dec		00:00

W
W

 48 / 55 mph 55 / 47°F 62% 1007 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

W
W

 47 / 54 mph 54 / 46°F 63% 1008 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

WNW
WNW

 40 / 46 mph 53 / 46°F 61% 1011 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

WNW
WNW

 35 / 40 mph 55 / 48°F 58% 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
12:00

WNW
WNW

 32 / 37 mph 57 / 51°F 54% 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
15:00

WNW
WNW

 25 / 28 mph 57 / 52°F 45% 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
18:00

WNW
WNW

 10 / 13 mph 56 / 54°F 43% 1018 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

NW
NW

 2 / 4 mph 55 / 56°F 47% 1019 mb
Low level cloud: 2%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 16
Dec		00:00

N
N

 6 / 9 mph 55 / 53°F 57% 1019 mb
Low level cloud: 36%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

 19 / 28 mph 54 / 49°F 63% 1019 mb
Low level cloud: 56%
Mid level cloud: 7%
High level cloud: 5%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNW
NNW

 9 / 12 mph 53 / 51°F 58% 1021 mb
Low level cloud: 72%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

W
W

 11 / 13 mph 55 / 52°F 55% 1022 mb
Low level cloud: 1%
Mid level cloud: 5%
High level cloud: 6%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

 22 / 25 mph 57 / 52°F 58% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 29 / 33 mph 57 / 52°F 62% 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
18:00

W
W

 33 / 48 mph 56 / 50°F 56% 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
21:00

W
W

 33 / 55 mph 55 / 49°F 60% 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
Wed 17
Dec		00:00

W
W

 34 / 47 mph 57 / 51°F 64% 1018 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

W
W

 34 / 45 mph 56 / 50°F 62% 1018 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

W
W

 32 / 42 mph 56 / 51°F 64% 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
09:00

W
W

 25 / 34 mph 57 / 51°F 64% 1020 mb
Low level cloud: 4%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

 21 / 26 mph 57 / 52°F 65% 1019 mb
Low level cloud: 6%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

 13 / 17 mph 57 / 54°F 62% 1018 mb
Low level cloud: 35%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NW
NW

 9 / 12 mph 57 / 55°F 59% 1020 mb
Low level cloud: 40%
Mid level cloud: 5%
High level cloud: 2%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NW
NW

 9 / 14 mph 57 / 55°F 56% 1020 mb
Low level cloud: 4%
Mid level cloud: 23%
High level cloud: 18%
Most Significant Cloud Type: medium
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 18
Dec		00:00

NNW
NNW

 10 / 17 mph 56 / 53°F 57% 1020 mb
Low level cloud: 41%
Mid level cloud: 44%
High level cloud: 10%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

 12 / 17 mph 55 / 52°F 67% 1020 mb
Low level cloud: 79%
Mid level cloud: 80%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

 17 / 21 mph 55 / 50°F 82% 1021 mb
Low level cloud: 82%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

NE
NE

 19 / 24 mph 56 / 51°F 80% 1023 mb
Low level cloud: 73%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
88%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

NE
NE

 24 / 30 mph 57 / 52°F 81% 1022 mb
Low level cloud: 93%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

 25 / 29 mph 58 / 53°F 76% 1023 mb
Low level cloud: 94%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 23 / 31 mph 57 / 52°F 70% 1025 mb
Low level cloud: 67%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

 23 / 30 mph 56 / 51°F 73% 1026 mb
Low level cloud: 78%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 19
Dec		00:00

NE
NE

 21 / 26 mph 57 / 52°F 73% 1026 mb
Low level cloud: 86%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

 20 / 28 mph 56 / 52°F 72% 1027 mb
Low level cloud: 90%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NE
NE

 19 / 27 mph 56 / 52°F 71% 1028 mb
Low level cloud: 94%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

 16 / 24 mph 57 / 53°F 69% 1029 mb
Low level cloud: 85%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

 15 / 21 mph 58 / 55°F 69% 1028 mb
Low level cloud: 93%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 12 / 19 mph 58 / 56°F 61% 1028 mb
Low level cloud: 80%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

 10 / 19 mph 58 / 56°F 53% 1029 mb
Low level cloud: 92%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

 8 / 17 mph 57 / 55°F 50% 1030 mb
Low level cloud: 98%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
98%
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
Dec		03:00

SSE
SSE

 20 / 41 mph 66 / 67°F 62% 1023 mb
Low level cloud: 47%
Mid level cloud: 46%
High level cloud: 18%
Most Significant Cloud Type: low
64%
0.0 In
09:00

NE
NE

 7 / 15 mph 62 / 62°F 82% 1024 mb
Low level cloud: 87%
Mid level cloud: 69%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
15:00

NNE
NNE

 14 / 29 mph 66 / 66°F 86% 1023 mb
Low level cloud: 32%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
31%
0.0 In
21:00

SSE
SSE

 18 / 38 mph 66 / 66°F 65% 1026 mb
Low level cloud: 59%
Mid level cloud: 50%
High level cloud: 19%
Most Significant Cloud Type: low
79%
0.0 In
Sun 21
Dec		03:00

SE
SE

 18 / 38 mph 66 / 66°F 69% 1025 mb
Low level cloud: 68%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
75%
0.0 In
09:00

SSE
SSE

 9 / 19 mph 64 / 64°F 79% 1026 mb
Low level cloud: 78%
Mid level cloud: 61%
High level cloud: 14%
Most Significant Cloud Type: low
100%
0.0 In
15:00

SSE
SSE

 13 / 27 mph 67 / 67°F 67% 1026 mb
Low level cloud: 38%
Mid level cloud: 23%
High level cloud: 19%
Most Significant Cloud Type: low
48%
0.0 In
21:00

NE
NE

 30 / 62 mph 63 / 63°F 86% 1027 mb
Low level cloud: 98%
Mid level cloud: 81%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Mon 22
Dec		03:00

S
S

 16 / 34 mph 67 / 67°F 70% 1024 mb
Low level cloud: 18%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
29%
0.2 In
09:00

NNE
NNE

 37 / 78 mph 59 / 53°F 88% 1026 mb
Low level cloud: 94%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
15:00

S
S

 21 / 44 mph 72 / 72°F 74% 1019 mb
Low level cloud: 5%
Mid level cloud: 56%
High level cloud: 21%
Most Significant Cloud Type: medium
69%
0.3 In
21:00

NE
NE

 22 / 46 mph 59 / 59°F 91% 1020 mb
Low level cloud: 92%
Mid level cloud: 65%
High level cloud: 15%
Most Significant Cloud Type: low
100%
0.0 In
Tue 23
Dec		03:00

SSE
SSE

 25 / 53 mph 62 / 62°F 78% 1013 mb
Low level cloud: 26%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
53%
0.1 In
09:00

S
S

 35 / 74 mph 66 / 66°F 90% 1008 mb
Low level cloud: 76%
Mid level cloud: 48%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.6 In
15:00

NNE
NNE

 16 / 33 mph 69 / 69°F 94% 1003 mb
Low level cloud: 69%
Mid level cloud: 87%
High level cloud: 100%
Most Significant Cloud Type: low
100%
1.0 In
21:00

WSW
WSW

 18 / 37 mph 66 / 66°F 82% 1003 mb
Low level cloud: 50%
Mid level cloud: 33%
High level cloud: 0%
Most Significant Cloud Type: low
61%
0.5 In
Wed 24
Dec		03:00

N
N

 27 / 57 mph 59 / 59°F 56% 996 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 9%
Most Significant Cloud Type: high
9%
0.6 In
09:00

N
N

 17 / 36 mph 60 / 60°F 76% 1003 mb
Low level cloud: 92%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
91%
0.0 In
15:00

W
W

 26 / 54 mph 66 / 65°F 61% 999 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
0.0 In
21:00

W
W

 44 / 93 mph 60 / 60°F 62% 1005 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Thu 25
Dec		03:00

W
W

 39 / 82 mph 52 / 44°F 69% 1004 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
09:00

WNW
WNW

 14 / 29 mph 53 / 48°F 54% 1012 mb
Low level cloud: 29%
Mid level cloud: 2%
High level cloud: 4%
Most Significant Cloud Type: low
29%
0.0 In
15:00

W
W

 45 / 95 mph 53 / 45°F 61% 1008 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
21:00

ENE
ENE

 17 / 36 mph 53 / 48°F 62% 1015 mb
Low level cloud: 92%
Mid level cloud: 94%
High level cloud: 35%
Most Significant Cloud Type: low
100%
0.0 In
Fri 26
Dec		03:00

W
W

 42 / 88 mph 49 / 39°F 60% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
09:00

NNE
NNE

 24 / 51 mph 52 / 46°F 75% 1018 mb
Low level cloud: 80%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
80%
0.2 In
15:00

W
W

 42 / 88 mph 50 / 41°F 58% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
21:00

NNE
NNE

 18 / 39 mph 53 / 47°F 86% 1015 mb
Low level cloud: 97%
Mid level cloud: 13%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Sat 27
Dec		03:00

WNW
WNW

 31 / 64 mph 48 / 40°F 63% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
09:00

N
N

 13 / 28 mph 52 / 47°F 87% 1006 mb
Low level cloud: 21%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.5 In
15:00

WNW
WNW

 13 / 27 mph 49 / 44°F 61% 1023 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 100%
Most Significant Cloud Type: medium
14%
0.0 In
21:00

W
W

 40 / 83 mph 52 / 44°F 64% 1010 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
Sun 28
Dec		03:00

WSW
WSW

 25 / 52 mph 53 / 47°F 61% 1020 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 33%
Most Significant Cloud Type: medium
29%
0.0 In
09:00

WNW
WNW

 38 / 81 mph 51 / 42°F 63% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
2%
0.0 In
15:00

W
W

 20 / 42 mph 59 / 59°F 69% 1016 mb
Low level cloud: 64%
Mid level cloud: 80%
High level cloud: 11%
Most Significant Cloud Type: low
93%
0.1 In
21:00

WNW
WNW

 11 / 22 mph 51 / 47°F 50% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 33%
Most Significant Cloud Type: high
32%
0.0 In

Other Locations Near to Niijima Island

Cities and Towns: Kamitsuki, Japan

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