Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Upper Inglesham 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Upper Inglesham

Gloucestershire, United Kingdom

Long range weather outlook for Upper Inglesham includes 14 day forecast summary:

The next 14 day outlook for Upper Inglesham shows the average daytime maximum temperature will be around 12°C, with a high for the two weeks of 15°C expected on the afternoon of Friday 31st. The average minimum temperature will be 6°C, dipping to its lowest on the morning of Tuesday 28th at 4°C. The next 14 days will have some days seeing a little precipitation and some days with rain. It looks like Thursday 23rd will have the most precipitation with an accumulation of around 18.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Thu 23
Oct		21:00

W
W

 18 / 29 mph 43 / 35°F 81% 999 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 1%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 24
Oct		00:00

W
W

 15 / 26 mph 42 / 35°F 83% 1000 mb
Low level cloud: 0%
Mid level cloud: 5%
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

W
W

 13 / 23 mph 41 / 34°F 80% 1000 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

 14 / 25 mph 41 / 33°F 83% 1000 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

 13 / 17 mph 46 / 40°F 81% 1000 mb
Low level cloud: 16%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 17 / 21 mph 52 / 47°F 67% 999 mb
Low level cloud: 83%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 19 / 27 mph 51 / 44°F 77% 998 mb
Low level cloud: 96%
Mid level cloud: 91%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 15 / 25 mph 48 / 42°F 89% 998 mb
Low level cloud: 63%
Mid level cloud: 55%
High level cloud: 0%
Most Significant Cloud Type: low
82%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

WSW
WSW

 6 / 9 mph 48 / 45°F 93% 998 mb
Low level cloud: 44%
Mid level cloud: 45%
High level cloud: 10%
Most Significant Cloud Type: low
60%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sat 25
Oct		00:00

NW
NW

 11 / 17 mph 44 / 39°F 90% 1001 mb
Low level cloud: 68%
Mid level cloud: 20%
High level cloud: 53%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WNW
WNW

 10 / 20 mph 43 / 37°F 88% 1002 mb
Low level cloud: 57%
Mid level cloud: 46%
High level cloud: 14%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

 9 / 19 mph 42 / 36°F 91% 1004 mb
Low level cloud: 9%
Mid level cloud: 57%
High level cloud: 7%
Most Significant Cloud Type: medium
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NW
NW

 13 / 20 mph 45 / 38°F 82% 1006 mb
Low level cloud: 20%
Mid level cloud: 88%
High level cloud: 13%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NW
NW

 14 / 18 mph 48 / 42°F 63% 1007 mb
Low level cloud: 71%
Mid level cloud: 15%
High level cloud: 3%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

 16 / 18 mph 50 / 44°F 69% 1007 mb
Low level cloud: 1%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

 16 / 18 mph 48 / 42°F 84% 1009 mb
Low level cloud: 12%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

 15 / 18 mph 45 / 39°F 85% 1010 mb
Low level cloud: 65%
Mid level cloud: 82%
High level cloud: 0%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 26
Oct		00:00

NNW
NNW

 10 / 13 mph 43 / 37°F 92% 1010 mb
Low level cloud: 80%
Mid level cloud: 49%
High level cloud: 0%
Most Significant Cloud Type: low
97%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

WNW
WNW

 11 / 19 mph 41 / 35°F 86% 1010 mb
Low level cloud: 25%
Mid level cloud: 49%
High level cloud: 0%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

 13 / 21 mph 40 / 33°F 88% 1011 mb
Low level cloud: 30%
Mid level cloud: 14%
High level cloud: 14%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

 15 / 20 mph 44 / 37°F 80% 1012 mb
Low level cloud: 24%
Mid level cloud: 30%
High level cloud: 13%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

 15 / 19 mph 49 / 44°F 67% 1011 mb
Low level cloud: 34%
Mid level cloud: 100%
High level cloud: 65%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 12 / 18 mph 46 / 40°F 88% 1009 mb
Low level cloud: 98%
Mid level cloud: 91%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 21 / 31 mph 50 / 43°F 87% 1006 mb
Low level cloud: 100%
Mid level cloud: 70%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

W
W

 19 / 29 mph 52 / 46°F 87% 1004 mb
Low level cloud: 82%
Mid level cloud: 44%
High level cloud: 91%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 27
Oct		00:00

WNW
WNW

 20 / 31 mph 51 / 45°F 81% 1003 mb
Low level cloud: 78%
Mid level cloud: 53%
High level cloud: 6%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

 18 / 30 mph 47 / 41°F 85% 1003 mb
Low level cloud: 43%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

W
W

 23 / 36 mph 49 / 42°F 71% 1002 mb
Low level cloud: 22%
Mid level cloud: 88%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NW
NW

 21 / 30 mph 50 / 44°F 76% 1004 mb
Low level cloud: 92%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NW
NW

 15 / 21 mph 49 / 43°F 74% 1008 mb
Low level cloud: 68%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

 15 / 21 mph 50 / 44°F 63% 1011 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
18:00

NW
NW

 12 / 21 mph 45 / 39°F 71% 1014 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
21:00

WNW
WNW

 12 / 20 mph 43 / 36°F 82% 1017 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 28
Oct		00:00

WNW
WNW

 9 / 17 mph 41 / 36°F 87% 1018 mb
Low level cloud: 16%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WNW
WNW

 9 / 17 mph 40 / 35°F 83% 1020 mb
Low level cloud: 12%
Mid level cloud: 0%
High level cloud: 7%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

 7 / 14 mph 40 / 35°F 85% 1021 mb
Low level cloud: 3%
Mid level cloud: 6%
High level cloud: 2%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

W
W

 6 / 10 mph 45 / 40°F 72% 1022 mb
Low level cloud: 10%
Mid level cloud: 8%
High level cloud: 2%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

 8 / 10 mph 52 / 49°F 56% 1021 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 9%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 9 / 12 mph 52 / 49°F 62% 1021 mb
Low level cloud: 20%
Mid level cloud: 20%
High level cloud: 32%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

 7 / 13 mph 46 / 42°F 84% 1021 mb
Low level cloud: 14%
Mid level cloud: 26%
High level cloud: 100%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

 7 / 14 mph 44 / 40°F 87% 1021 mb
Low level cloud: 10%
Mid level cloud: 31%
High level cloud: 100%
Most Significant Cloud Type: medium
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 29
Oct		00:00

SSW
SSW

 7 / 14 mph 43 / 39°F 90% 1020 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 33%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

 6 / 13 mph 43 / 39°F 94% 1019 mb
Low level cloud: 8%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: medium
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

 6 / 12 mph 43 / 39°F 91% 1018 mb
Low level cloud: 1%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

 6 / 10 mph 48 / 44°F 83% 1017 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 7%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

 14 / 17 mph 55 / 50°F 65% 1015 mb
Low level cloud: 15%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

 13 / 19 mph 52 / 48°F 65% 1012 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 90%
Most Significant Cloud Type: high
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SE
SE

 14 / 23 mph 47 / 41°F 72% 1010 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 100%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

 15 / 26 mph 48 / 42°F 62% 1007 mb
Low level cloud: 0%
Mid level cloud: 56%
High level cloud: 37%
Most Significant Cloud Type: medium
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Thu 30
Oct		00:00

SW
SW

 9 / 18 mph 51 / 48°F 82% 1020 mb
Low level cloud: 11%
Mid level cloud: 9%
High level cloud: 21%
Most Significant Cloud Type: low
16%
0.0 In
06:00

SW
SW

 4 / 7 mph 45 / 43°F 90% 1032 mb
Low level cloud: 6%
Mid level cloud: 7%
High level cloud: 2%
Most Significant Cloud Type: low
9%
0.0 In
12:00

S
S

 20 / 40 mph 60 / 60°F 82% 1003 mb
Low level cloud: 49%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
76%
0.0 In
18:00

SE
SE

 11 / 21 mph 53 / 49°F 82% 1017 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 10%
Most Significant Cloud Type: medium
4%
0.0 In
Fri 31
Oct		00:00

ESE
ESE

 8 / 15 mph 47 / 43°F 94% 1009 mb
Low level cloud: 21%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
25%
0.0 In
06:00

SW
SW

 21 / 40 mph 52 / 46°F 79% 1008 mb
Low level cloud: 100%
Mid level cloud: 46%
High level cloud: 61%
Most Significant Cloud Type: low
100%
0.0 In
12:00

SSW
SSW

 17 / 33 mph 57 / 54°F 75% 1009 mb
Low level cloud: 35%
Mid level cloud: 38%
High level cloud: 0%
Most Significant Cloud Type: low
48%
0.0 In
18:00

SSW
SSW

 13 / 26 mph 59 / 59°F 91% 1000 mb
Low level cloud: 53%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
81%
0.0 In
Sat 01
Nov		00:00

SSW
SSW

 9 / 17 mph 52 / 48°F 96% 1010 mb
Low level cloud: 73%
Mid level cloud: 46%
High level cloud: 10%
Most Significant Cloud Type: low
90%
0.0 In
06:00

SW
SW

 28 / 53 mph 60 / 60°F 91% 991 mb
Low level cloud: 100%
Mid level cloud: 71%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.7 In
12:00

W
W

 10 / 21 mph 56 / 53°F 75% 1012 mb
Low level cloud: 10%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
72%
0.4 In
18:00

SSW
SSW

 26 / 50 mph 64 / 64°F 80% 995 mb
Low level cloud: 99%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
Sun 02
Nov		00:00

NW
NW

 3 / 7 mph 50 / 50°F 90% 1017 mb
Low level cloud: 12%
Mid level cloud: 34%
High level cloud: 0%
Most Significant Cloud Type: low
24%
0.1 In
06:00

SW
SW

 29 / 56 mph 52 / 45°F 71% 999 mb
Low level cloud: 20%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
20%
0.0 In
12:00

S
S

 3 / 7 mph 55 / 55°F 71% 1020 mb
Low level cloud: 13%
Mid level cloud: 4%
High level cloud: 1%
Most Significant Cloud Type: low
14%
0.0 In
18:00

SW
SW

 21 / 41 mph 56 / 52°F 79% 1006 mb
Low level cloud: 49%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
52%
0.0 In
Mon 03
Nov		00:00

ESE
ESE

 7 / 15 mph 44 / 40°F 93% 1017 mb
Low level cloud: 28%
Mid level cloud: 42%
High level cloud: 100%
Most Significant Cloud Type: low
54%
0.0 In
06:00

SSW
SSW

 9 / 17 mph 48 / 44°F 94% 1011 mb
Low level cloud: 42%
Mid level cloud: 26%
High level cloud: 100%
Most Significant Cloud Type: low
63%
0.0 In
12:00

SSE
SSE

 21 / 44 mph 53 / 48°F 80% 1006 mb
Low level cloud: 78%
Mid level cloud: 64%
High level cloud: 82%
Most Significant Cloud Type: low
100%
0.0 In
18:00

WNW
WNW

 17 / 33 mph 44 / 37°F 83% 1016 mb
Low level cloud: 62%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
62%
0.0 In
Tue 04
Nov		00:00

S
S

 20 / 42 mph 53 / 47°F 87% 999 mb
Low level cloud: 96%
Mid level cloud: 64%
High level cloud: 28%
Most Significant Cloud Type: low
100%
0.2 In
06:00

ESE
ESE

 10 / 19 mph 42 / 36°F 82% 1021 mb
Low level cloud: 74%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

SSW
SSW

 17 / 36 mph 55 / 51°F 82% 999 mb
Low level cloud: 38%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
54%
0.1 In
18:00

SW
SW

 15 / 30 mph 52 / 47°F 88% 1009 mb
Low level cloud: 32%
Mid level cloud: 3%
High level cloud: 100%
Most Significant Cloud Type: low
45%
0.3 In
Wed 05
Nov		00:00

SSE
SSE

 8 / 16 mph 48 / 45°F 93% 1004 mb
Low level cloud: 18%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
34%
0.0 In
06:00

SSE
SSE

 19 / 38 mph 53 / 48°F 92% 1001 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 22%
Most Significant Cloud Type: low
100%
0.0 In
12:00

ESE
ESE

 4 / 9 mph 56 / 55°F 78% 1009 mb
Low level cloud: 78%
Mid level cloud: 11%
High level cloud: 32%
Most Significant Cloud Type: low
85%
0.0 In
18:00

SW
SW

 12 / 24 mph 46 / 41°F 84% 997 mb
Low level cloud: 5%
Mid level cloud: 73%
High level cloud: 100%
Most Significant Cloud Type: medium
89%
0.2 In
Thu 06
Nov		00:00

N
N

 8 / 16 mph 49 / 45°F 93% 1011 mb
Low level cloud: 51%
Mid level cloud: 87%
High level cloud: 52%
Most Significant Cloud Type: low
87%
0.0 In
06:00

SW
SW

 10 / 20 mph 43 / 38°F 91% 996 mb
Low level cloud: 58%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
72%
0.1 In
12:00

ENE
ENE

 8 / 17 mph 53 / 51°F 83% 1011 mb
Low level cloud: 97%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
99%
0.0 In
18:00

NW
NW

 11 / 23 mph 41 / 35°F 77% 1006 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 29%
Most Significant Cloud Type: medium
31%
0.0 In
Fri 07
Nov		00:00

ENE
ENE

 3 / 7 mph 50 / 49°F 92% 1011 mb
Low level cloud: 90%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
92%
0.0 In
06:00

WSW
WSW

 10 / 21 mph 38 / 31°F 89% 1014 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
0.0 In
12:00

ESE
ESE

 5 / 10 mph 51 / 50°F 86% 1007 mb
Low level cloud: 97%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
18:00

WSW
WSW

 4 / 7 mph 46 / 44°F 91% 1018 mb
Low level cloud: 48%
Mid level cloud: 54%
High level cloud: 49%
Most Significant Cloud Type: low
73%
0.0 In

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