WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Ryecroft 14 Day Long Range Forecast

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

Rotherham, United Kingdom

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

Reviewing the forecast for Ryecroft Over the next 14 days and the average daytime maximum temperature will be around 11°C, with a high for the two weeks of 16°C expected on the afternoon of Wednesday 25th. The average minimum temperature will be 7°C, dipping to its lowest on the morning of Wednesday 4th at 3°C. The fortnight ahead will have most days seeing a little rain. Predictions are Thursday 26th will have the most precipitation with an accumulation of around 5.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Mon 23
Feb
18:00

WSW
WSW

9 / 10 mph 52 / 49°F 83% 1012 mb
Low level cloud: 54%
Mid level cloud: 100%
High level cloud: 11%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

5 / 7 mph 50 / 48°F 90% 1012 mb
Low level cloud: 83%
Mid level cloud: 95%
High level cloud: 34%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 24
Feb
00:00

SW
SW

5 / 8 mph 49 / 48°F 94% 1012 mb
Low level cloud: 86%
Mid level cloud: 46%
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

SW
SW

6 / 11 mph 49 / 47°F 94% 1013 mb
Low level cloud: 52%
Mid level cloud: 15%
High level cloud: 1%
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 / 17 mph 51 / 47°F 80% 1013 mb
Low level cloud: 70%
Mid level cloud: 2%
High level cloud: 8%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

9 / 11 mph 52 / 48°F 81% 1013 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

12 / 13 mph 56 / 53°F 65% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

11 / 13 mph 58 / 56°F 62% 1012 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

S
S

11 / 12 mph 57 / 54°F 74% 1012 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

S
S

10 / 13 mph 53 / 49°F 81% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 25
Feb
00:00

S
S

9 / 14 mph 50 / 46°F 87% 1013 mb
Low level cloud: 8%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

8 / 14 mph 49 / 45°F 94% 1013 mb
Low level cloud: 42%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

8 / 14 mph 48 / 45°F 94% 1013 mb
Low level cloud: 36%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

9 / 13 mph 51 / 48°F 85% 1014 mb
Low level cloud: 9%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

12 / 14 mph 59 / 56°F 66% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 14%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

11 / 14 mph 61 / 61°F 65% 1013 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 36%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

7 / 12 mph 55 / 53°F 80% 1013 mb
Low level cloud: 0%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

8 / 12 mph 54 / 52°F 89% 1012 mb
Low level cloud: 17%
Mid level cloud: 100%
High level cloud: 32%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 26
Feb
00:00

SSW
SSW

9 / 14 mph 52 / 49°F 90% 1012 mb
Low level cloud: 24%
Mid level cloud: 12%
High level cloud: 9%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

12 / 19 mph 50 / 46°F 86% 1012 mb
Low level cloud: 47%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

14 / 25 mph 49 / 44°F 75% 1011 mb
Low level cloud: 27%
Mid level cloud: 3%
High level cloud: 30%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

14 / 20 mph 51 / 46°F 76% 1011 mb
Low level cloud: 75%
Mid level cloud: 58%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

16 / 19 mph 54 / 49°F 77% 1010 mb
Low level cloud: 83%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

17 / 19 mph 55 / 50°F 80% 1008 mb
Low level cloud: 82%
Mid level cloud: 86%
High level cloud: 67%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

SW
SW

18 / 21 mph 53 / 48°F 83% 1007 mb
Low level cloud: 75%
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
21:00

SW
SW

15 / 18 mph 52 / 47°F 88% 1007 mb
Low level cloud: 77%
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
Fri 27
Feb
00:00

SW
SW

9 / 14 mph 50 / 46°F 88% 1007 mb
Low level cloud: 18%
Mid level cloud: 93%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

5 / 8 mph 49 / 46°F 85% 1007 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
06:00

WSW
WSW

4 / 7 mph 47 / 45°F 90% 1009 mb
Low level cloud: 42%
Mid level cloud: 27%
High level cloud: 60%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

6 / 7 mph 49 / 47°F 83% 1011 mb
Low level cloud: 17%
Mid level cloud: 7%
High level cloud: 20%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

7 / 8 mph 54 / 51°F 65% 1011 mb
Low level cloud: 54%
Mid level cloud: 22%
High level cloud: 6%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

6 / 7 mph 54 / 52°F 67% 1011 mb
Low level cloud: 91%
Mid level cloud: 55%
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

NW
NW

9 / 13 mph 48 / 44°F 77% 1013 mb
Low level cloud: 74%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
89%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

W
W

7 / 9 mph 45 / 41°F 82% 1016 mb
Low level cloud: 15%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 28
Feb
00:00

W
W

10 / 14 mph 44 / 38°F 83% 1017 mb
Low level cloud: 14%
Mid level cloud: 9%
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

W
W

10 / 15 mph 42 / 36°F 86% 1018 mb
Low level cloud: 41%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

6 / 8 mph 42 / 38°F 86% 1019 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
09:00

SSW
SSW

9 / 13 mph 42 / 36°F 75% 1019 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

15 / 18 mph 46 / 40°F 71% 1017 mb
Low level cloud: 27%
Mid level cloud: 37%
High level cloud: 7%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

19 / 24 mph 49 / 43°F 71% 1014 mb
Low level cloud: 97%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

19 / 27 mph 47 / 40°F 84% 1013 mb
Low level cloud: 95%
Mid level cloud: 60%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SW
SW

16 / 24 mph 47 / 40°F 79% 1013 mb
Low level cloud: 29%
Mid level cloud: 19%
High level cloud: 82%
Most Significant Cloud Type: low
45%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sun 01
Mar
00:00

SW
SW

12 / 19 mph 46 / 40°F 81% 1014 mb
Low level cloud: 11%
Mid level cloud: 43%
High level cloud: 32%
Most Significant Cloud Type: medium
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

11 / 18 mph 46 / 40°F 86% 1014 mb
Low level cloud: 39%
Mid level cloud: 91%
High level cloud: 100%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

13 / 20 mph 47 / 42°F 93% 1013 mb
Low level cloud: 99%
Mid level cloud: 99%
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

SSW
SSW

16 / 23 mph 51 / 46°F 88% 1014 mb
Low level cloud: 74%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

16 / 20 mph 54 / 50°F 85% 1015 mb
Low level cloud: 78%
Mid level cloud: 54%
High level cloud: 71%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

15 / 21 mph 52 / 47°F 87% 1015 mb
Low level cloud: 86%
Mid level cloud: 37%
High level cloud: 92%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

15 / 23 mph 52 / 47°F 82% 1015 mb
Low level cloud: 89%
Mid level cloud: 32%
High level cloud: 46%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

14 / 20 mph 48 / 43°F 80% 1015 mb
Low level cloud: 1%
Mid level cloud: 4%
High level cloud: 12%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Mon 02
Mar
00:00

SSE
SSE

3 / 4 mph 49 / 49°F 91% 1009 mb
Low level cloud: 95%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
98%
0.0 In
06:00

ESE
ESE

4 / 5 mph 41 / 39°F 94% 1010 mb
Low level cloud: 82%
Mid level cloud: 47%
High level cloud: 15%
Most Significant Cloud Type: low
100%
0.0 In
12:00

SE
SE

7 / 9 mph 46 / 43°F 83% 1014 mb
Low level cloud: 95%
Mid level cloud: 64%
High level cloud: 31%
Most Significant Cloud Type: low
100%
0.0 In
18:00

S
S

13 / 18 mph 51 / 47°F 86% 1008 mb
Low level cloud: 54%
Mid level cloud: 95%
High level cloud: 30%
Most Significant Cloud Type: low
90%
0.0 In
Tue 03
Mar
00:00

S
S

17 / 33 mph 46 / 39°F 77% 1013 mb
Low level cloud: 94%
Mid level cloud: 100%
High level cloud: 98%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SSE
SSE

22 / 46 mph 42 / 33°F 77% 997 mb
Low level cloud: 93%
Mid level cloud: 93%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

SW
SW

14 / 21 mph 52 / 47°F 71% 1013 mb
Low level cloud: 74%
Mid level cloud: 60%
High level cloud: 0%
Most Significant Cloud Type: low
95%
0.0 In
18:00

SE
SE

3 / 5 mph 57 / 57°F 57% 1034 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Wed 04
Mar
00:00

SW
SW

6 / 10 mph 47 / 44°F 77% 1024 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
06:00

S
S

4 / 6 mph 42 / 39°F 76% 1032 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

11 / 17 mph 51 / 47°F 57% 1027 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 50%
Most Significant Cloud Type: medium
48%
0.0 In
18:00

S
S

6 / 9 mph 50 / 48°F 69% 1027 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
1%
0.0 In
Thu 05
Mar
00:00

S
S

9 / 13 mph 47 / 43°F 82% 1026 mb
Low level cloud: 44%
Mid level cloud: 29%
High level cloud: 2%
Most Significant Cloud Type: low
54%
0.0 In
06:00

SW
SW

2 / 3 mph 43 / 43°F 82% 1025 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 18%
Most Significant Cloud Type: medium
45%
0.0 In
12:00

SSW
SSW

9 / 14 mph 51 / 47°F 88% 1025 mb
Low level cloud: 80%
Mid level cloud: 89%
High level cloud: 21%
Most Significant Cloud Type: low
100%
0.0 In
18:00

NW
NW

7 / 12 mph 43 / 38°F 81% 1030 mb
Low level cloud: 61%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
Fri 06
Mar
00:00

W
W

8 / 12 mph 52 / 49°F 93% 1026 mb
Low level cloud: 93%
Mid level cloud: 45%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.0 In
06:00

W
W

5 / 8 mph 39 / 35°F 81% 1036 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 18%
Most Significant Cloud Type: high
17%
0.0 In
12:00

N
N

12 / 18 mph 49 / 44°F 42% 1033 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 11%
Most Significant Cloud Type: high
10%
0.0 In
18:00

WNW
WNW

9 / 14 mph 46 / 41°F 74% 1037 mb
Low level cloud: 2%
Mid level cloud: 16%
High level cloud: 22%
Most Significant Cloud Type: medium
23%
0.0 In
Sat 07
Mar
00:00

W
W

4 / 6 mph 46 / 44°F 59% 1036 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: high
3%
0.0 In
06:00

WSW
WSW

4 / 6 mph 42 / 40°F 86% 1035 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 32%
Most Significant Cloud Type: medium
18%
0.0 In
12:00

N
N

6 / 9 mph 49 / 46°F 48% 1036 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 61%
Most Significant Cloud Type: high
60%
0.0 In
18:00

W
W

2 / 4 mph 55 / 56°F 73% 1034 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 100%
Most Significant Cloud Type: medium
22%
0.0 In
Sun 08
Mar
00:00

WNW
WNW

2 / 3 mph 47 / 47°F 79% 1035 mb
Low level cloud: 8%
Mid level cloud: 4%
High level cloud: 50%
Most Significant Cloud Type: low
15%
0.0 In
06:00

SSE
SSE

4 / 6 mph 42 / 39°F 86% 1033 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 11%
Most Significant Cloud Type: medium
46%
0.0 In
12:00

NNE
NNE

5 / 7 mph 51 / 49°F 53% 1033 mb
Low level cloud: 24%
Mid level cloud: 8%
High level cloud: 33%
Most Significant Cloud Type: low
30%
0.0 In
18:00

ESE
ESE

8 / 13 mph 48 / 45°F 64% 1028 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 20%
Most Significant Cloud Type: medium
8%
0.0 In
Mon 09
Mar
00:00

SSE
SSE

1 / 2 mph 42 / 42°F 86% 1032 mb
Low level cloud: 3%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

SE
SE

4 / 6 mph 41 / 39°F 87% 1024 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 5%
Most Significant Cloud Type: medium
5%
0.0 In
12:00

W
W

5 / 8 mph 50 / 48°F 55% 1028 mb
Low level cloud: 37%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
72%
0.0 In
18:00

S
S

5 / 8 mph 52 / 51°F 84% 1020 mb
Low level cloud: 34%
Mid level cloud: 5%
High level cloud: 32%
Most Significant Cloud Type: low
39%
0.0 In
Tue 10
Mar
00:00

WNW
WNW

4 / 7 mph 41 / 38°F 83% 1024 mb
Low level cloud: 43%
Mid level cloud: 46%
High level cloud: 14%
Most Significant Cloud Type: low
60%
0.0 In
06:00

S
S

6 / 10 mph 47 / 44°F 97% 1018 mb
Low level cloud: 61%
Mid level cloud: 82%
High level cloud: 80%
Most Significant Cloud Type: low
99%
0.0 In
12:00

N
N

9 / 14 mph 44 / 39°F 63% 1023 mb
Low level cloud: 83%
Mid level cloud: 98%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
18:00

SSW
SSW

11 / 18 mph 53 / 49°F 83% 1015 mb
Low level cloud: 77%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
84%
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