WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Sura 14 Day Long Range Forecast

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

Russia

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

The outlook for Sura in the two weeks ahead shows the average daytime maximum temperature will be around 21°C, with a high for the two weeks of 28°C expected on the afternoon of Saturday 1st. The average minimum temperature will be 8°C, dipping to its lowest on the morning of Thursday 30th at 0°C. Expect the following 14 days ahead to have some days seeing a little precipitation and some days with rain. Current predictions suggest Sunday 2nd will have the most precipitation with an accumulation of around 17.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Tue 28
May
19:00

NE
NE

4 / 5 mph 44 / 41°F 78% 1019 mb
Low level cloud: 52%
Mid level cloud: 58%
High level cloud: 20%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ENE
ENE

3 / 4 mph 42 / 40°F 76% 1019 mb
Low level cloud: 73%
Mid level cloud: 58%
High level cloud: 19%
Most Significant Cloud Type: low
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 29
May
01:00

ENE
ENE

5 / 8 mph 42 / 38°F 74% 1019 mb
Low level cloud: 97%
Mid level cloud: 100%
High level cloud: 38%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

E
E

8 / 11 mph 39 / 33°F 87% 1019 mb
Low level cloud: 93%
Mid level cloud: 100%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

E
E

7 / 9 mph 37 / 32°F 93% 1019 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 55%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

E
E

6 / 8 mph 36 / 31°F 97% 1020 mb
Low level cloud: 78%
Mid level cloud: 98%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
13:00

E
E

5 / 5 mph 47 / 44°F 71% 1021 mb
Low level cloud: 58%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ESE
ESE

2 / 2 mph 54 / 54°F 52% 1021 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ENE
ENE

4 / 5 mph 54 / 52°F 46% 1020 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 2%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

E
E

2 / 4 mph 41 / 40°F 68% 1021 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 20%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 30
May
01:00

E
E

4 / 8 mph 35 / 31°F 78% 1022 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 33%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

E
E

4 / 7 mph 33 / 29°F 75% 1023 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 33%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

E
E

2 / 3 mph 45 / 44°F 57% 1023 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 19%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ESE
ESE

3 / 3 mph 55 / 54°F 43% 1023 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 14%
Most Significant Cloud Type: high
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SE
SE

2 / 3 mph 62 / 60°F 36% 1022 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 19%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

S
S

2 / 2 mph 66 / 63°F 34% 1021 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 7%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ESE
ESE

2 / 2 mph 64 / 62°F 38% 1020 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
22:00

SE
SE

4 / 8 mph 49 / 47°F 65% 1020 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 31
May
01:00

S
S

4 / 8 mph 43 / 41°F 73% 1020 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 8%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

3 / 6 mph 43 / 41°F 76% 1020 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 5%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

3 / 4 mph 57 / 56°F 56% 1020 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 4%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

3 / 4 mph 68 / 65°F 39% 1020 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 3%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

4 / 5 mph 73 / 74°F 35% 1020 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 1%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

5 / 6 mph 75 / 75°F 34% 1019 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 3%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

4 / 5 mph 74 / 75°F 39% 1019 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 1%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

0 / 1 mph 59 / 57°F 61% 1020 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 01
Jun
01:00

S
S

3 / 6 mph 53 / 53°F 67% 1020 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

4 / 9 mph 52 / 50°F 71% 1020 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 6%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

4 / 6 mph 65 / 63°F 60% 1020 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 32%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

6 / 7 mph 78 / 76°F 41% 1019 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 3%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

8 / 9 mph 83 / 80°F 36% 1018 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

10 / 13 mph 81 / 79°F 38% 1017 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNW
NNW

3 / 5 mph 76 / 76°F 50% 1016 mb
Low level cloud: 0%
Mid level cloud: 70%
High level cloud: 0%
Most Significant Cloud Type: medium
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

4 / 7 mph 68 / 65°F 58% 1016 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 02
Jun
01:00

SSW
SSW

2 / 4 mph 59 / 59°F 70% 1016 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

S
S

4 / 9 mph 60 / 58°F 72% 1015 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

4 / 6 mph 70 / 67°F 69% 1015 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 19%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSW
SSW

7 / 8 mph 80 / 79°F 50% 1014 mb
Low level cloud: 0%
Mid level cloud: 50%
High level cloud: 100%
Most Significant Cloud Type: medium
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

7 / 8 mph 79 / 79°F 51% 1013 mb
Low level cloud: 2%
Mid level cloud: 79%
High level cloud: 100%
Most Significant Cloud Type: medium
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

8 / 12 mph 65 / 62°F 94% 1013 mb
Low level cloud: 22%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
49%
Expect 0.5 In of precipitation over the past 3 hours.
0.5 In
19:00

S
S

6 / 8 mph 71 / 68°F 82% 1010 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 4%
Most Significant Cloud Type: medium
18%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
22:00

SSE
SSE

7 / 13 mph 63 / 61°F 95% 1009 mb
Low level cloud: 34%
Mid level cloud: 8%
High level cloud: 9%
Most Significant Cloud Type: low
38%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Mon 03
Jun
01:00

SSW
SSW

5 / 11 mph 58 / 58°F 97% 1008 mb
Low level cloud: 7%
Mid level cloud: 13%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

3 / 7 mph 59 / 57°F 96% 1007 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 3%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

4 / 6 mph 69 / 66°F 86% 1006 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 33%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

5 / 6 mph 76 / 76°F 67% 1006 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 93%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

6 / 7 mph 82 / 80°F 50% 1005 mb
Low level cloud: 10%
Mid level cloud: 27%
High level cloud: 11%
Most Significant Cloud Type: low
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

5 / 9 mph 78 / 77°F 58% 1005 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 4%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSW
SSW

2 / 5 mph 68 / 65°F 83% 1005 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 18%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WSW
WSW

3 / 6 mph 65 / 62°F 91% 1004 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 10%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Tue 04
Jun
04:00

NNW
NNW

3 / 7 mph 40 / 37°F 97% 1007 mb
Low level cloud: 35%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
10:00

SSW
SSW

8 / 13 mph 63 / 63°F 45% 1003 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 33%
Most Significant Cloud Type: medium
27%
0.0 In
16:00

NW
NW

9 / 17 mph 60 / 60°F 34% 1020 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 5%
Most Significant Cloud Type: medium
24%
0.0 In
22:00

NW
NW

8 / 16 mph 61 / 61°F 96% 1004 mb
Low level cloud: 48%
Mid level cloud: 56%
High level cloud: 98%
Most Significant Cloud Type: low
78%
0.0 In
Wed 05
Jun
04:00

E
E

1 / 2 mph 55 / 55°F 80% 1011 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 4%
Most Significant Cloud Type: medium
17%
0.0 In
10:00

N
N

7 / 15 mph 46 / 42°F 96% 1003 mb
Low level cloud: 100%
Mid level cloud: 82%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.0 In
16:00

SSE
SSE

11 / 22 mph 68 / 68°F 36% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 7%
Most Significant Cloud Type: high
6%
0.0 In
22:00

NNW
NNW

5 / 11 mph 51 / 49°F 76% 1012 mb
Low level cloud: 82%
Mid level cloud: 5%
High level cloud: 14%
Most Significant Cloud Type: low
85%
0.0 In
Thu 06
Jun
04:00

SE
SE

14 / 30 mph 53 / 48°F 95% 1007 mb
Low level cloud: 97%
Mid level cloud: 71%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.3 In
10:00

N
N

3 / 6 mph 58 / 58°F 58% 1013 mb
Low level cloud: 48%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
48%
0.0 In
16:00

SSE
SSE

9 / 18 mph 64 / 64°F 86% 1007 mb
Low level cloud: 83%
Mid level cloud: 30%
High level cloud: 32%
Most Significant Cloud Type: low
97%
0.3 In
22:00

ESE
ESE

6 / 13 mph 54 / 53°F 72% 1011 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
Fri 07
Jun
04:00

SSE
SSE

4 / 9 mph 53 / 52°F 97% 1012 mb
Low level cloud: 5%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
6%
0.1 In
10:00

SSE
SSE

8 / 16 mph 66 / 66°F 54% 1011 mb
Low level cloud: 0%
Mid level cloud: 73%
High level cloud: 0%
Most Significant Cloud Type: medium
72%
0.0 In
16:00

S
S

11 / 24 mph 76 / 78°F 46% 1007 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: medium
19%
0.0 In
22:00

SSE
SSE

1 / 2 mph 59 / 59°F 88% 1011 mb
Low level cloud: 17%
Mid level cloud: 45%
High level cloud: 21%
Most Significant Cloud Type: low
35%
0.1 In
Sat 08
Jun
04:00

W
W

8 / 16 mph 47 / 43°F 93% 1014 mb
Low level cloud: 22%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: low
30%
0.5 In
10:00

NNW
NNW

7 / 15 mph 56 / 54°F 99% 1008 mb
Low level cloud: 100%
Mid level cloud: 75%
High level cloud: 100%
Most Significant Cloud Type: low
100%
1.2 In
16:00

SW
SW

11 / 23 mph 65 / 65°F 35% 1016 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 71%
Most Significant Cloud Type: medium
48%
0.0 In
22:00

NW
NW

4 / 9 mph 48 / 46°F 88% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.3 In
Sun 09
Jun
04:00

SW
SW

10 / 20 mph 53 / 50°F 82% 1011 mb
Low level cloud: 68%
Mid level cloud: 83%
High level cloud: 0%
Most Significant Cloud Type: low
97%
0.0 In
10:00

SSW
SSW

5 / 11 mph 65 / 65°F 49% 1017 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 40%
Most Significant Cloud Type: medium
5%
0.0 In
16:00

W
W

12 / 25 mph 64 / 64°F 36% 1010 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
0.0 In
22:00

SW
SW

5 / 11 mph 57 / 56°F 76% 1016 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 33%
Most Significant Cloud Type: medium
45%
0.0 In
Mon 10
Jun
04:00

SE
SE

5 / 11 mph 45 / 42°F 75% 1007 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
44%
0.0 In
10:00

WNW
WNW

5 / 10 mph 66 / 66°F 40% 1018 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 11%
Most Significant Cloud Type: medium
26%
0.0 In
16:00

WSW
WSW

13 / 28 mph 53 / 48°F 78% 1008 mb
Low level cloud: 72%
Mid level cloud: 46%
High level cloud: 13%
Most Significant Cloud Type: low
90%
0.1 In
22:00

NE
NE

2 / 4 mph 57 / 58°F 55% 1017 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
0.0 In
Tue 11
Jun
04:00

W
W

11 / 23 mph 44 / 38°F 91% 1012 mb
Low level cloud: 82%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
86%
0.1 In
10:00

NE
NE

9 / 19 mph 52 / 48°F 97% 1010 mb
Low level cloud: 100%
Mid level cloud: 66%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.3 In
16:00

NW
NW

11 / 23 mph 49 / 45°F 76% 1016 mb
Low level cloud: 83%
Mid level cloud: 46%
High level cloud: 31%
Most Significant Cloud Type: low
100%
0.0 In
22:00

NW
NW

4 / 9 mph 48 / 46°F 94% 1015 mb
Low level cloud: 24%
Mid level cloud: 43%
High level cloud: 52%
Most Significant Cloud Type: low
45%
0.2 In
Wed 12
Jun
04:00

NW
NW

6 / 13 mph 40 / 36°F 95% 1020 mb
Low level cloud: 58%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
74%
0.0 In
10:00

NNW
NNW

12 / 25 mph 47 / 42°F 62% 1020 mb
Low level cloud: 76%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
78%
0.0 In
16:00

W
W

4 / 8 mph 60 / 60°F 35% 1018 mb
Low level cloud: 0%
Mid level cloud: 42%
High level cloud: 21%
Most Significant Cloud Type: medium
42%
0.0 In
22:00

NNW
NNW

6 / 13 mph 43 / 40°F 75% 1024 mb
Low level cloud: 53%
Mid level cloud: 5%
High level cloud: 5%
Most Significant Cloud Type: low
54%
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