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Swere 14 Day Long Range Forecast

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

Oxfordshire, United Kingdom

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

The next 14 day outlook for Swere shows the average daytime maximum temperature will be around 26°C, with a high for the two weeks of 33°C expected on the afternoon of Sunday 29th. The mean minimum temperature will be 14°C, dipping to its lowest on the morning of Thursday 26th at 9°C. The coming 14 days will have mixed weather with some days dry and some seeing a little rain. The indicators are that Wednesday 25th will have the most precipitation with an accumulation of around 1.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 20
Jun		18:00

SE
SE

 9 / 12 mph 82 / 81°F 47% 1020 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 17%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

 10 / 21 mph 68 / 66°F 67% 1021 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 21
Jun		00:00

SE
SE

 7 / 15 mph 61 / 61°F 72% 1020 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

 6 / 13 mph 59 / 58°F 74% 1019 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
06:00

SE
SE

 8 / 15 mph 67 / 65°F 72% 1018 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

 13 / 16 mph 79 / 79°F 49% 1017 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 6%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

S
S

 14 / 16 mph 83 / 81°F 47% 1017 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 77%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

 12 / 17 mph 81 / 81°F 52% 1015 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 8%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

 11 / 15 mph 82 / 81°F 51% 1014 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 9%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

 11 / 22 mph 71 / 69°F 74% 1013 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 33%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 22
Jun		00:00

SSW
SSW

 7 / 14 mph 62 / 62°F 96% 1013 mb
Low level cloud: 6%
Mid level cloud: 27%
High level cloud: 29%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

 8 / 14 mph 57 / 56°F 94% 1013 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

 9 / 14 mph 58 / 55°F 93% 1013 mb
Low level cloud: 34%
Mid level cloud: 2%
High level cloud: 12%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 16 / 19 mph 68 / 67°F 64% 1013 mb
Low level cloud: 34%
Mid level cloud: 4%
High level cloud: 3%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 21 / 25 mph 72 / 71°F 52% 1012 mb
Low level cloud: 69%
Mid level cloud: 18%
High level cloud: 100%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 23 / 26 mph 73 / 76°F 43% 1011 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 4%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 18 / 24 mph 64 / 63°F 63% 1012 mb
Low level cloud: 4%
Mid level cloud: 45%
High level cloud: 5%
Most Significant Cloud Type: medium
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

 17 / 27 mph 58 / 54°F 82% 1011 mb
Low level cloud: 40%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 23
Jun		00:00

WSW
WSW

 19 / 28 mph 58 / 54°F 77% 1011 mb
Low level cloud: 96%
Mid level cloud: 8%
High level cloud: 5%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

 14 / 22 mph 53 / 49°F 79% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 17%
Most Significant Cloud Type: high
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

W
W

 16 / 20 mph 54 / 48°F 75% 1013 mb
Low level cloud: 25%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

 17 / 19 mph 59 / 56°F 55% 1014 mb
Low level cloud: 98%
Mid level cloud: 1%
High level cloud: 9%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

 17 / 20 mph 68 / 66°F 41% 1015 mb
Low level cloud: 1%
Mid level cloud: 23%
High level cloud: 4%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 18 / 21 mph 70 / 69°F 38% 1014 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 8%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

 16 / 20 mph 67 / 66°F 48% 1015 mb
Low level cloud: 30%
Mid level cloud: 6%
High level cloud: 3%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

W
W

 10 / 18 mph 58 / 54°F 71% 1016 mb
Low level cloud: 3%
Mid level cloud: 12%
High level cloud: 22%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 24
Jun		00:00

WSW
WSW

 9 / 17 mph 52 / 48°F 93% 1016 mb
Low level cloud: 2%
Mid level cloud: 17%
High level cloud: 100%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

 9 / 15 mph 53 / 50°F 93% 1015 mb
Low level cloud: 30%
Mid level cloud: 76%
High level cloud: 14%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

 11 / 15 mph 58 / 55°F 88% 1014 mb
Low level cloud: 64%
Mid level cloud: 66%
High level cloud: 8%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

 14 / 19 mph 59 / 59°F 86% 1014 mb
Low level cloud: 98%
Mid level cloud: 71%
High level cloud: 8%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 16 / 18 mph 67 / 66°F 74% 1013 mb
Low level cloud: 93%
Mid level cloud: 28%
High level cloud: 8%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 16 / 19 mph 73 / 76°F 65% 1012 mb
Low level cloud: 67%
Mid level cloud: 19%
High level cloud: 15%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 15 / 18 mph 70 / 70°F 70% 1011 mb
Low level cloud: 85%
Mid level cloud: 46%
High level cloud: 18%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 8 / 13 mph 66 / 63°F 89% 1011 mb
Low level cloud: 32%
Mid level cloud: 26%
High level cloud: 100%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 25
Jun		00:00

SSW
SSW

 7 / 14 mph 60 / 60°F 96% 1010 mb
Low level cloud: 13%
Mid level cloud: 20%
High level cloud: 2%
Most Significant Cloud Type: low
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

 6 / 11 mph 58 / 58°F 97% 1008 mb
Low level cloud: 35%
Mid level cloud: 30%
High level cloud: 12%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

 4 / 7 mph 63 / 60°F 92% 1007 mb
Low level cloud: 30%
Mid level cloud: 76%
High level cloud: 76%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

 7 / 10 mph 63 / 63°F 84% 1006 mb
Low level cloud: 7%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

 3 / 4 mph 67 / 66°F 63% 1005 mb
Low level cloud: 0%
Mid level cloud: 98%
High level cloud: 21%
Most Significant Cloud Type: medium
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 14 / 19 mph 65 / 63°F 61% 1004 mb
Low level cloud: 0%
Mid level cloud: 48%
High level cloud: 11%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 15 / 20 mph 66 / 64°F 72% 1003 mb
Low level cloud: 55%
Mid level cloud: 53%
High level cloud: 1%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

W
W

 12 / 17 mph 56 / 53°F 94% 1004 mb
Low level cloud: 48%
Mid level cloud: 67%
High level cloud: 100%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 26
Jun		00:00

WSW
WSW

 13 / 21 mph 53 / 48°F 94% 1005 mb
Low level cloud: 62%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

 12 / 19 mph 51 / 47°F 94% 1006 mb
Low level cloud: 26%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

 13 / 18 mph 52 / 47°F 90% 1008 mb
Low level cloud: 11%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

W
W

 17 / 19 mph 60 / 56°F 65% 1010 mb
Low level cloud: 66%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

 19 / 21 mph 69 / 68°F 41% 1011 mb
Low level cloud: 1%
Mid level cloud: 63%
High level cloud: 0%
Most Significant Cloud Type: medium
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 18 / 21 mph 71 / 69°F 39% 1013 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 33%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 17 / 21 mph 68 / 67°F 48% 1015 mb
Low level cloud: 33%
Mid level cloud: 17%
High level cloud: 2%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

 12 / 20 mph 59 / 55°F 77% 1018 mb
Low level cloud: 14%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 27
Jun		00:00

SW
SW

 15 / 28 mph 62 / 62°F 91% 1016 mb
Low level cloud: 85%
Mid level cloud: 6%
High level cloud: 11%
Most Significant Cloud Type: low
88%
0.0 In
06:00

SSW
SSW

 21 / 31 mph 62 / 62°F 93% 1006 mb
Low level cloud: 100%
Mid level cloud: 99%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.0 In
12:00

WNW
WNW

 8 / 12 mph 78 / 79°F 43% 1024 mb
Low level cloud: 19%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
27%
0.0 In
18:00

S
S

 2 / 3 mph 89 / 91°F 43% 1019 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
0.0 In
Sat 28
Jun		00:00

ESE
ESE

 6 / 13 mph 63 / 63°F 97% 1018 mb
Low level cloud: 25%
Mid level cloud: 34%
High level cloud: 17%
Most Significant Cloud Type: low
38%
0.0 In
06:00

WNW
WNW

 6 / 9 mph 65 / 65°F 86% 1025 mb
Low level cloud: 27%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
28%
0.0 In
12:00

NNW
NNW

 2 / 4 mph 86 / 86°F 40% 1025 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 21%
Most Significant Cloud Type: high
21%
0.0 In
18:00

SW
SW

 12 / 17 mph 85 / 85°F 41% 1018 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
Sun 29
Jun		00:00

NW
NW

 2 / 4 mph 71 / 71°F 89% 1023 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
06:00

SSW
SSW

 4 / 5 mph 69 / 69°F 76% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

S
S

 5 / 8 mph 88 / 88°F 37% 1019 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 3%
Most Significant Cloud Type: medium
4%
0.0 In
18:00

WSW
WSW

 12 / 17 mph 83 / 80°F 24% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Mon 30
Jun		00:00

NNW
NNW

 7 / 12 mph 69 / 69°F 76% 1015 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 2%
Most Significant Cloud Type: medium
14%
0.0 In
06:00

WNW
WNW

 6 / 9 mph 67 / 67°F 64% 1013 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: medium
10%
0.0 In
12:00

W
W

 8 / 12 mph 87 / 87°F 35% 1013 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 20%
Most Significant Cloud Type: medium
17%
0.0 In
18:00

NNW
NNW

 16 / 23 mph 70 / 70°F 36% 1018 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
Tue 01
Jul		00:00

NNW
NNW

 9 / 15 mph 62 / 62°F 98% 1013 mb
Low level cloud: 60%
Mid level cloud: 61%
High level cloud: 100%
Most Significant Cloud Type: low
93%
0.0 In
06:00

SW
SW

 1 / 1 mph 61 / 61°F 62% 1024 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 9%
Most Significant Cloud Type: medium
4%
0.0 In
12:00

NNW
NNW

 9 / 19 mph 57 / 55°F 94% 1015 mb
Low level cloud: 98%
Mid level cloud: 65%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
18:00

S
S

 15 / 21 mph 78 / 76°F 26% 1018 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
0.0 In
Wed 02
Jul		00:00

NNW
NNW

 9 / 19 mph 54 / 51°F 78% 1017 mb
Low level cloud: 75%
Mid level cloud: 95%
High level cloud: 69%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SSE
SSE

 3 / 4 mph 68 / 68°F 53% 1011 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 100%
Most Significant Cloud Type: medium
21%
0.0 In
12:00

N
N

 12 / 25 mph 67 / 67°F 32% 1017 mb
Low level cloud: 0%
Mid level cloud: 86%
High level cloud: 33%
Most Significant Cloud Type: medium
87%
0.0 In
18:00

W
W

 20 / 30 mph 70 / 70°F 42% 1012 mb
Low level cloud: 1%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
0.0 In
Thu 03
Jul		00:00

N
N

 6 / 12 mph 58 / 58°F 73% 1023 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
0.0 In
06:00

WSW
WSW

 9 / 14 mph 53 / 50°F 75% 1019 mb
Low level cloud: 5%
Mid level cloud: 49%
High level cloud: 100%
Most Significant Cloud Type: medium
66%
0.0 In
12:00

NNW
NNW

 9 / 19 mph 71 / 71°F 33% 1024 mb
Low level cloud: 0%
Mid level cloud: 35%
High level cloud: 16%
Most Significant Cloud Type: medium
35%
0.0 In
18:00

WNW
WNW

 14 / 21 mph 67 / 67°F 32% 1018 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
0.0 In
Fri 04
Jul		00:00

NW
NW

 6 / 13 mph 56 / 55°F 58% 1025 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 40%
Most Significant Cloud Type: medium
11%
0.0 In
06:00

SW
SW

 7 / 10 mph 57 / 55°F 81% 1020 mb
Low level cloud: 5%
Mid level cloud: 11%
High level cloud: 33%
Most Significant Cloud Type: low
12%
0.0 In
12:00

WSW
WSW

 9 / 18 mph 76 / 76°F 31% 1023 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 16%
Most Significant Cloud Type: medium
5%
0.0 In
18:00

SSW
SSW

 6 / 10 mph 59 / 60°F 93% 1017 mb
Low level cloud: 74%
Mid level cloud: 82%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
Sat 05
Jul		00:00

NW
NW

 6 / 12 mph 60 / 60°F 88% 1023 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 8%
Most Significant Cloud Type: medium
24%
0.0 In
06:00

WSW
WSW

 9 / 14 mph 60 / 60°F 95% 1017 mb
Low level cloud: 86%
Mid level cloud: 13%
High level cloud: 12%
Most Significant Cloud Type: low
92%
0.1 In
12:00

SW
SW

 6 / 13 mph 80 / 79°F 33% 1021 mb
Low level cloud: 0%
Mid level cloud: 36%
High level cloud: 0%
Most Significant Cloud Type: medium
35%
0.0 In
18:00

W
W

 13 / 19 mph 71 / 71°F 61% 1020 mb
Low level cloud: 86%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
94%
0.0 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