WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Norfolk Broads 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Norfolk Broads

Norfolk, United Kingdom

Long range weather outlook for Norfolk Broads includes 14 day forecast summary:

The forecast for Norfolk Broads in the coming two weeks is predicting the average daytime maximum temperature will be around 15°C, with a high for the two weeks of 18°C expected on the afternoon of Friday 10th. The mean minimum temperature will be 10°C, dipping to its lowest on the morning of Thursday 9th at 8°C. Expect the following 14 days ahead to remain predominantly dry. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Mon 06
May
12:00

E
E

8 / 10 mph 55 / 51°F 86% 1009 mb
Low level cloud: 4%
Mid level cloud: 72%
High level cloud: 3%
Most Significant Cloud Type: medium
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ENE
ENE

9 / 10 mph 56 / 53°F 85% 1010 mb
Low level cloud: 37%
Mid level cloud: 44%
High level cloud: 4%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

9 / 11 mph 55 / 51°F 86% 1011 mb
Low level cloud: 54%
Mid level cloud: 16%
High level cloud: 7%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

8 / 12 mph 53 / 50°F 88% 1013 mb
Low level cloud: 28%
Mid level cloud: 5%
High level cloud: 3%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 07
May
00:00

ENE
ENE

8 / 14 mph 51 / 47°F 87% 1014 mb
Low level cloud: 47%
Mid level cloud: 10%
High level cloud: 11%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

8 / 14 mph 50 / 47°F 84% 1015 mb
Low level cloud: 65%
Mid level cloud: 25%
High level cloud: 9%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NE
NE

8 / 16 mph 50 / 46°F 84% 1017 mb
Low level cloud: 21%
Mid level cloud: 14%
High level cloud: 4%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

7 / 14 mph 52 / 48°F 75% 1019 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

7 / 13 mph 53 / 50°F 71% 1021 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
15:00

N
N

8 / 15 mph 54 / 50°F 71% 1022 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 8%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

N
N

7 / 11 mph 54 / 51°F 78% 1024 mb
Low level cloud: 1%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

N
N

8 / 13 mph 51 / 48°F 82% 1025 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 100%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 08
May
00:00

NNW
NNW

8 / 14 mph 50 / 47°F 89% 1026 mb
Low level cloud: 66%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

9 / 15 mph 49 / 45°F 94% 1026 mb
Low level cloud: 37%
Mid level cloud: 22%
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

N
N

10 / 17 mph 48 / 43°F 93% 1027 mb
Low level cloud: 50%
Mid level cloud: 13%
High level cloud: 9%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

10 / 15 mph 51 / 46°F 86% 1028 mb
Low level cloud: 12%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

9 / 12 mph 54 / 50°F 82% 1028 mb
Low level cloud: 5%
Mid level cloud: 10%
High level cloud: 5%
Most Significant Cloud Type: low
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

8 / 9 mph 56 / 52°F 83% 1028 mb
Low level cloud: 2%
Mid level cloud: 7%
High level cloud: 93%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

6 / 7 mph 55 / 52°F 87% 1028 mb
Low level cloud: 8%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

4 / 6 mph 52 / 51°F 89% 1028 mb
Low level cloud: 2%
Mid level cloud: 11%
High level cloud: 35%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 09
May
00:00

SSW
SSW

4 / 7 mph 49 / 48°F 89% 1028 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 100%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

4 / 7 mph 48 / 47°F 88% 1027 mb
Low level cloud: 3%
Mid level cloud: 66%
High level cloud: 34%
Most Significant Cloud Type: medium
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

4 / 8 mph 50 / 48°F 86% 1027 mb
Low level cloud: 10%
Mid level cloud: 6%
High level cloud: 1%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

7 / 9 mph 58 / 56°F 79% 1027 mb
Low level cloud: 13%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

9 / 11 mph 61 / 60°F 79% 1026 mb
Low level cloud: 73%
Mid level cloud: 46%
High level cloud: 16%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

9 / 12 mph 62 / 60°F 82% 1025 mb
Low level cloud: 57%
Mid level cloud: 32%
High level cloud: 57%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

9 / 14 mph 61 / 59°F 89% 1025 mb
Low level cloud: 22%
Mid level cloud: 19%
High level cloud: 100%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

8 / 17 mph 53 / 50°F 90% 1025 mb
Low level cloud: 17%
Mid level cloud: 15%
High level cloud: 100%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 10
May
00:00

SSW
SSW

7 / 15 mph 52 / 50°F 90% 1025 mb
Low level cloud: 22%
Mid level cloud: 30%
High level cloud: 89%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

7 / 15 mph 51 / 48°F 91% 1024 mb
Low level cloud: 20%
Mid level cloud: 36%
High level cloud: 32%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

5 / 10 mph 54 / 51°F 92% 1024 mb
Low level cloud: 23%
Mid level cloud: 51%
High level cloud: 100%
Most Significant Cloud Type: low
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

5 / 7 mph 59 / 59°F 88% 1024 mb
Low level cloud: 21%
Mid level cloud: 64%
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

SE
SE

6 / 8 mph 65 / 62°F 82% 1023 mb
Low level cloud: 32%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

6 / 9 mph 63 / 60°F 83% 1022 mb
Low level cloud: 28%
Mid level cloud: 52%
High level cloud: 66%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

6 / 9 mph 58 / 57°F 81% 1022 mb
Low level cloud: 8%
Mid level cloud: 56%
High level cloud: 0%
Most Significant Cloud Type: medium
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

4 / 9 mph 53 / 53°F 75% 1022 mb
Low level cloud: 7%
Mid level cloud: 46%
High level cloud: 3%
Most Significant Cloud Type: medium
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 11
May
00:00

E
E

2 / 5 mph 53 / 54°F 74% 1022 mb
Low level cloud: 9%
Mid level cloud: 50%
High level cloud: 0%
Most Significant Cloud Type: medium
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

4 / 7 mph 52 / 52°F 80% 1022 mb
Low level cloud: 24%
Mid level cloud: 74%
High level cloud: 11%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

5 / 11 mph 53 / 49°F 89% 1022 mb
Low level cloud: 43%
Mid level cloud: 65%
High level cloud: 0%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

6 / 12 mph 55 / 52°F 88% 1022 mb
Low level cloud: 58%
Mid level cloud: 37%
High level cloud: 4%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

7 / 10 mph 58 / 55°F 89% 1023 mb
Low level cloud: 43%
Mid level cloud: 49%
High level cloud: 14%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

8 / 9 mph 59 / 57°F 87% 1022 mb
Low level cloud: 16%
Mid level cloud: 30%
High level cloud: 15%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

9 / 10 mph 58 / 55°F 87% 1022 mb
Low level cloud: 2%
Mid level cloud: 13%
High level cloud: 14%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

9 / 11 mph 55 / 52°F 93% 1022 mb
Low level cloud: 14%
Mid level cloud: 6%
High level cloud: 17%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 12
May
00:00

NE
NE

8 / 12 mph 53 / 50°F 94% 1022 mb
Low level cloud: 27%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

8 / 13 mph 51 / 48°F 94% 1022 mb
Low level cloud: 21%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NE
NE

10 / 18 mph 50 / 46°F 93% 1022 mb
Low level cloud: 34%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

12 / 18 mph 54 / 49°F 88% 1022 mb
Low level cloud: 14%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

12 / 14 mph 57 / 53°F 84% 1021 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

12 / 14 mph 59 / 55°F 86% 1020 mb
Low level cloud: 7%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

11 / 13 mph 57 / 54°F 91% 1019 mb
Low level cloud: 39%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

12 / 14 mph 54 / 50°F 96% 1019 mb
Low level cloud: 51%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Mon 13
May
00:00

ENE
ENE

15 / 23 mph 49 / 43°F 81% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

ESE
ESE

11 / 19 mph 52 / 48°F 94% 1009 mb
Low level cloud: 46%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: low
65%
0.0 In
12:00

ESE
ESE

11 / 17 mph 58 / 56°F 88% 1010 mb
Low level cloud: 10%
Mid level cloud: 10%
High level cloud: 8%
Most Significant Cloud Type: low
14%
0.0 In
18:00

NE
NE

18 / 26 mph 56 / 52°F 92% 1013 mb
Low level cloud: 39%
Mid level cloud: 20%
High level cloud: 12%
Most Significant Cloud Type: low
47%
0.0 In
Tue 14
May
00:00

ENE
ENE

7 / 14 mph 55 / 53°F 96% 1009 mb
Low level cloud: 37%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
52%
0.0 In
06:00

NNE
NNE

13 / 24 mph 51 / 47°F 99% 1009 mb
Low level cloud: 96%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
98%
0.1 In
12:00

E
E

11 / 17 mph 59 / 56°F 90% 1008 mb
Low level cloud: 23%
Mid level cloud: 14%
High level cloud: 72%
Most Significant Cloud Type: low
37%
0.0 In
18:00

NE
NE

6 / 11 mph 56 / 55°F 96% 1008 mb
Low level cloud: 76%
Mid level cloud: 9%
High level cloud: 93%
Most Significant Cloud Type: low
90%
0.0 In
Wed 15
May
00:00

NE
NE

13 / 21 mph 51 / 46°F 93% 1005 mb
Low level cloud: 32%
Mid level cloud: 77%
High level cloud: 91%
Most Significant Cloud Type: low
69%
0.1 In
06:00

NE
NE

5 / 10 mph 51 / 49°F 97% 1008 mb
Low level cloud: 96%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
12:00

NE
NE

27 / 45 mph 54 / 48°F 84% 1005 mb
Low level cloud: 96%
Mid level cloud: 76%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.1 In
18:00

NE
NE

16 / 31 mph 54 / 50°F 91% 1007 mb
Low level cloud: 97%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Thu 16
May
00:00

ENE
ENE

29 / 51 mph 48 / 40°F 74% 1012 mb
Low level cloud: 18%
Mid level cloud: 18%
High level cloud: 22%
Most Significant Cloud Type: low
26%
0.0 In
06:00

NNE
NNE

21 / 41 mph 46 / 39°F 87% 1008 mb
Low level cloud: 91%
Mid level cloud: 93%
High level cloud: 40%
Most Significant Cloud Type: low
100%
0.9 In
12:00

ENE
ENE

28 / 50 mph 49 / 41°F 72% 1016 mb
Low level cloud: 19%
Mid level cloud: 54%
High level cloud: 0%
Most Significant Cloud Type: low
38%
0.0 In
18:00

NNE
NNE

18 / 35 mph 50 / 44°F 76% 1016 mb
Low level cloud: 60%
Mid level cloud: 30%
High level cloud: 16%
Most Significant Cloud Type: low
73%
0.0 In
Fri 17
May
00:00

ENE
ENE

28 / 50 mph 48 / 40°F 73% 1018 mb
Low level cloud: 21%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: low
36%
0.0 In
06:00

NNE
NNE

17 / 32 mph 46 / 39°F 77% 1021 mb
Low level cloud: 48%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: low
60%
0.0 In
12:00

ENE
ENE

26 / 45 mph 50 / 42°F 75% 1018 mb
Low level cloud: 25%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: low
41%
0.0 In
18:00

NNE
NNE

19 / 37 mph 48 / 41°F 68% 1024 mb
Low level cloud: 64%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
64%
0.0 In
Sat 18
May
00:00

NE
NE

22 / 39 mph 47 / 39°F 77% 1016 mb
Low level cloud: 55%
Mid level cloud: 93%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
06:00

NNE
NNE

16 / 31 mph 45 / 38°F 74% 1025 mb
Low level cloud: 44%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
44%
0.0 In
12:00

NNE
NNE

19 / 34 mph 50 / 43°F 71% 1015 mb
Low level cloud: 32%
Mid level cloud: 4%
High level cloud: 27%
Most Significant Cloud Type: low
36%
0.0 In
18:00

N
N

12 / 23 mph 49 / 45°F 77% 1025 mb
Low level cloud: 45%
Mid level cloud: 4%
High level cloud: 9%
Most Significant Cloud Type: low
47%
0.0 In
Sun 19
May
00:00

NNW
NNW

9 / 15 mph 47 / 42°F 85% 1016 mb
Low level cloud: 47%
Mid level cloud: 2%
High level cloud: 31%
Most Significant Cloud Type: low
51%
0.0 In
06:00

N
N

9 / 18 mph 45 / 40°F 84% 1025 mb
Low level cloud: 12%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
15%
0.0 In
12:00

NNE
NNE

9 / 16 mph 49 / 46°F 72% 1015 mb
Low level cloud: 12%
Mid level cloud: 97%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.0 In
18:00

N
N

8 / 16 mph 51 / 48°F 83% 1026 mb
Low level cloud: 7%
Mid level cloud: 4%
High level cloud: 6%
Most Significant Cloud Type: low
8%
0.0 In
Mon 20
May
00:00

NNW
NNW

5 / 10 mph 50 / 48°F 82% 1015 mb
Low level cloud: 1%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
0.0 In
06:00

W
W

7 / 13 mph 49 / 46°F 83% 1025 mb
Low level cloud: 24%
Mid level cloud: 43%
High level cloud: 83%
Most Significant Cloud Type: low
49%
0.0 In
12:00

N
N

10 / 18 mph 51 / 47°F 69% 1016 mb
Low level cloud: 3%
Mid level cloud: 12%
High level cloud: 4%
Most Significant Cloud Type: medium
20%
0.0 In
18:00

NNE
NNE

7 / 13 mph 54 / 52°F 82% 1024 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 14%
Most Significant Cloud Type: medium
17%
0.0 In
Tue 21
May
00:00

SW
SW

7 / 13 mph 47 / 43°F 89% 1018 mb
Low level cloud: 4%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
37%
0.0 In
06:00

NNW
NNW

9 / 18 mph 48 / 44°F 89% 1023 mb
Low level cloud: 91%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
99%
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