WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Ozero Khargy 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Ozero Khargy

Russia

Long range weather outlook for Ozero Khargy includes 14 day forecast summary:

Reviewing the forecast for Ozero Khargy Over the next 14 days and the average daytime maximum temperature will be around -20°C, with a high for the two weeks of -16°C expected on the afternoon of Sunday 22nd. The mean minimum temperature will be -29°C, dipping to its lowest on the morning of Wednesday 18th at -35°C. Expect the following 14 days ahead to remain predominantly dry. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 13
Mar
20:00

WSW
WSW

14 / 26 mph -9 / -30°F 86% 1033 mb
Low level cloud: 13%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

WSW
WSW

8 / 16 mph -15 / -32°F 93% 1035 mb
Low level cloud: 6%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 14
Mar
02:00

SSW
SSW

9 / 19 mph -21 / -41°F 100% 1036 mb
Low level cloud: 66%
Mid level cloud: 14%
High level cloud: 1%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

S
S

9 / 19 mph -20 / -40°F 99% 1036 mb
Low level cloud: 17%
Mid level cloud: 20%
High level cloud: 1%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

SSE
SSE

9 / 18 mph -21 / -40°F 100% 1035 mb
Low level cloud: 7%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SE
SE

9 / 19 mph -17 / -36°F 93% 1034 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 17%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

ESE
ESE

11 / 21 mph -6 / -24°F 85% 1032 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

ESE
ESE

10 / 16 mph -2 / -19°F 88% 1030 mb
Low level cloud: 4%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

ESE
ESE

5 / 11 mph -6 / -18°F 95% 1030 mb
Low level cloud: 38%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

SE
SE

4 / 7 mph -10 / -19°F 98% 1029 mb
Low level cloud: 23%
Mid level cloud: 100%
High level cloud: 6%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 15
Mar
02:00

SW
SW

2 / 4 mph -10 / -15°F 97% 1029 mb
Low level cloud: 95%
Mid level cloud: 100%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

WSW
WSW

4 / 8 mph -8 / -18°F 98% 1028 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

W
W

4 / 9 mph -20 / -32°F 100% 1029 mb
Low level cloud: 91%
Mid level cloud: 46%
High level cloud: 8%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

W
W

5 / 11 mph -19 / -33°F 100% 1030 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 15%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

W
W

4 / 9 mph -12 / -24°F 100% 1030 mb
Low level cloud: 100%
Mid level cloud: 43%
High level cloud: 21%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

WNW
WNW

4 / 9 mph -15 / -27°F 100% 1030 mb
Low level cloud: 85%
Mid level cloud: 68%
High level cloud: 13%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NNW
NNW

2 / 4 mph -23 / -30°F 100% 1031 mb
Low level cloud: 83%
Mid level cloud: 100%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NW
NW

2 / 4 mph -19 / -25°F 100% 1031 mb
Low level cloud: 86%
Mid level cloud: 100%
High level cloud: 14%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 16
Mar
02:00

N
N

3 / 6 mph -18 / -27°F 100% 1030 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 17%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NE
NE

3 / 6 mph -12 / -20°F 98% 1030 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 88%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

NNE
NNE

3 / 5 mph -12 / -19°F 100% 1030 mb
Low level cloud: 100%
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
11:00

ENE
ENE

2 / 4 mph -8 / -13°F 97% 1030 mb
Low level cloud: 97%
Mid level cloud: 100%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

N
N

2 / 3 mph -6 / -6°F 97% 1029 mb
Low level cloud: 100%
Mid level cloud: 16%
High level cloud: 28%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

NNE
NNE

3 / 6 mph -10 / -18°F 100% 1029 mb
Low level cloud: 98%
Mid level cloud: 4%
High level cloud: 8%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

N
N

3 / 6 mph -18 / -28°F 100% 1030 mb
Low level cloud: 100%
Mid level cloud: 15%
High level cloud: 12%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

N
N

4 / 8 mph -16 / -27°F 100% 1030 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 10%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 17
Mar
02:00

NNE
NNE

3 / 7 mph -16 / -26°F 100% 1030 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

N
N

3 / 5 mph -7 / -14°F 99% 1030 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 14%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

NNW
NNW

3 / 6 mph -10 / -18°F 100% 1030 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 10%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

NW
NW

3 / 5 mph -9 / -16°F 99% 1030 mb
Low level cloud: 100%
Mid level cloud: 10%
High level cloud: 1%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

WNW
WNW

3 / 5 mph -5 / -14°F 97% 1030 mb
Low level cloud: 100%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

WNW
WNW

4 / 8 mph -8 / -19°F 99% 1031 mb
Low level cloud: 100%
Mid level cloud: 3%
High level cloud: 1%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NW
NW

5 / 10 mph -19 / -32°F 100% 1032 mb
Low level cloud: 100%
Mid level cloud: 3%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

WNW
WNW

4 / 8 mph -22 / -34°F 100% 1032 mb
Low level cloud: 100%
Mid level cloud: 10%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 18
Mar
02:00

WNW
WNW

3 / 6 mph -25 / -35°F 100% 1032 mb
Low level cloud: 100%
Mid level cloud: 4%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

W
W

2 / 4 mph -28 / -35°F 100% 1033 mb
Low level cloud: 100%
Mid level cloud: 17%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

SW
SW

2 / 5 mph -30 / -39°F 100% 1033 mb
Low level cloud: 100%
Mid level cloud: 0%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

S
S

4 / 7 mph -27 / -39°F 100% 1034 mb
Low level cloud: 100%
Mid level cloud: 0%
High level cloud: 10%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SSE
SSE

4 / 9 mph -15 / -28°F 97% 1033 mb
Low level cloud: 90%
Mid level cloud: 0%
High level cloud: 9%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

SE
SE

5 / 11 mph -14 / -28°F 96% 1033 mb
Low level cloud: 71%
Mid level cloud: 0%
High level cloud: 9%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

ESE
ESE

7 / 14 mph -21 / -38°F 99% 1033 mb
Low level cloud: 72%
Mid level cloud: 0%
High level cloud: 10%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

ESE
ESE

7 / 16 mph -20 / -38°F 100% 1032 mb
Low level cloud: 82%
Mid level cloud: 6%
High level cloud: 20%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 19
Mar
02:00

ESE
ESE

8 / 17 mph -18 / -37°F 100% 1031 mb
Low level cloud: 93%
Mid level cloud: 11%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

ESE
ESE

9 / 18 mph -18 / -37°F 100% 1031 mb
Low level cloud: 98%
Mid level cloud: 9%
High level cloud: 21%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

SE
SE

9 / 19 mph -18 / -37°F 100% 1030 mb
Low level cloud: 99%
Mid level cloud: 14%
High level cloud: 30%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ESE
ESE

9 / 19 mph -14 / -32°F 99% 1029 mb
Low level cloud: 100%
Mid level cloud: 12%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

ESE
ESE

10 / 17 mph -8 / -25°F 99% 1028 mb
Low level cloud: 99%
Mid level cloud: 17%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

ESE
ESE

9 / 16 mph -6 / -22°F 99% 1028 mb
Low level cloud: 98%
Mid level cloud: 29%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

ESE
ESE

8 / 17 mph -11 / -28°F 100% 1027 mb
Low level cloud: 98%
Mid level cloud: 44%
High level cloud: 17%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

ESE
ESE

8 / 17 mph -13 / -30°F 100% 1026 mb
Low level cloud: 97%
Mid level cloud: 58%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 20
Mar
05:00

SSE
SSE

9 / 18 mph -18 / -37°F 100% 1025 mb
Low level cloud: 70%
Mid level cloud: 68%
High level cloud: 97%
Most Significant Cloud Type: low
100%
0.0 In
11:00

SE
SE

6 / 13 mph -8 / -23°F 96% 1013 mb
Low level cloud: 56%
Mid level cloud: 92%
High level cloud: 13%
Most Significant Cloud Type: low
89%
0.0 In
17:00

SSW
SSW

13 / 19 mph 11 / -4°F 92% 1010 mb
Low level cloud: 84%
Mid level cloud: 48%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
23:00

SSE
SSE

9 / 19 mph -2 / -18°F 91% 1010 mb
Low level cloud: 9%
Mid level cloud: 43%
High level cloud: 3%
Most Significant Cloud Type: medium
69%
0.0 In
Sat 21
Mar
05:00

S
S

9 / 18 mph 2 / -13°F 89% 1013 mb
Low level cloud: 0%
Mid level cloud: 50%
High level cloud: 100%
Most Significant Cloud Type: medium
54%
0.0 In
11:00

ESE
ESE

10 / 20 mph -3 / -19°F 93% 1023 mb
Low level cloud: 4%
Mid level cloud: 51%
High level cloud: 7%
Most Significant Cloud Type: medium
61%
0.0 In
17:00

S
S

8 / 15 mph 11 / -1°F 89% 1022 mb
Low level cloud: 40%
Mid level cloud: 98%
High level cloud: 33%
Most Significant Cloud Type: low
78%
0.0 In
23:00

ESE
ESE

4 / 9 mph -11 / -22°F 100% 1018 mb
Low level cloud: 20%
Mid level cloud: 10%
High level cloud: 96%
Most Significant Cloud Type: low
34%
0.0 In
Sun 22
Mar
05:00

SSE
SSE

9 / 19 mph 0 / -15°F 90% 1018 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 35%
Most Significant Cloud Type: medium
100%
0.0 In
11:00

SSE
SSE

5 / 11 mph -11 / -24°F 99% 1018 mb
Low level cloud: 41%
Mid level cloud: 5%
High level cloud: 4%
Most Significant Cloud Type: low
43%
0.0 In
17:00

S
S

8 / 16 mph 4 / -9°F 88% 1014 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 2%
Most Significant Cloud Type: medium
12%
0.0 In
23:00

SSW
SSW

4 / 9 mph -14 / -25°F 100% 1018 mb
Low level cloud: 25%
Mid level cloud: 4%
High level cloud: 19%
Most Significant Cloud Type: low
28%
0.0 In
Mon 23
Mar
05:00

SSE
SSE

8 / 16 mph -11 / -27°F 100% 1013 mb
Low level cloud: 10%
Mid level cloud: 78%
High level cloud: 40%
Most Significant Cloud Type: medium
100%
0.0 In
11:00

E
E

5 / 11 mph -3 / -15°F 97% 1017 mb
Low level cloud: 28%
Mid level cloud: 100%
High level cloud: 45%
Most Significant Cloud Type: medium
100%
0.0 In
17:00

SSW
SSW

7 / 14 mph 6 / -5°F 87% 1016 mb
Low level cloud: 2%
Mid level cloud: 15%
High level cloud: 8%
Most Significant Cloud Type: medium
19%
0.0 In
23:00

ENE
ENE

3 / 7 mph 4 / -4°F 97% 1015 mb
Low level cloud: 68%
Mid level cloud: 100%
High level cloud: 43%
Most Significant Cloud Type: low
100%
0.0 In
Tue 24
Mar
05:00

ENE
ENE

4 / 8 mph -11 / -22°F 100% 1021 mb
Low level cloud: 10%
Mid level cloud: 5%
High level cloud: 7%
Most Significant Cloud Type: low
12%
0.0 In
11:00

SSE
SSE

5 / 10 mph -6 / -17°F 100% 1013 mb
Low level cloud: 100%
Mid level cloud: 33%
High level cloud: 10%
Most Significant Cloud Type: low
100%
0.0 In
17:00

NE
NE

4 / 8 mph -1 / -10°F 97% 1021 mb
Low level cloud: 68%
Mid level cloud: 2%
High level cloud: 20%
Most Significant Cloud Type: low
71%
0.0 In
23:00

ESE
ESE

4 / 8 mph -11 / -22°F 100% 1012 mb
Low level cloud: 66%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
76%
0.0 In
Wed 25
Mar
05:00

SSW
SSW

5 / 11 mph -21 / -36°F 100% 1018 mb
Low level cloud: 100%
Mid level cloud: 2%
High level cloud: 6%
Most Significant Cloud Type: low
100%
0.0 In
11:00

SSE
SSE

3 / 7 mph -9 / -19°F 100% 1012 mb
Low level cloud: 87%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
17:00

SW
SW

6 / 12 mph 0 / -12°F 91% 1015 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 10%
Most Significant Cloud Type: medium
45%
0.0 In
23:00

SSE
SSE

4 / 7 mph -13 / -23°F 100% 1011 mb
Low level cloud: 54%
Mid level cloud: 46%
High level cloud: 10%
Most Significant Cloud Type: low
71%
0.0 In
Thu 26
Mar
05:00

WSW
WSW

7 / 15 mph -9 / -24°F 100% 1016 mb
Low level cloud: 100%
Mid level cloud: 4%
High level cloud: 4%
Most Significant Cloud Type: low
100%
0.0 In
11:00

S
S

8 / 17 mph -7 / -22°F 97% 1010 mb
Low level cloud: 44%
Mid level cloud: 9%
High level cloud: 17%
Most Significant Cloud Type: low
49%
0.0 In
17:00

SSW
SSW

6 / 11 mph 6 / -5°F 90% 1014 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
23:00

ESE
ESE

7 / 15 mph -11 / -26°F 100% 1008 mb
Low level cloud: 6%
Mid level cloud: 19%
High level cloud: 100%
Most Significant Cloud Type: medium
39%
0.0 In
Fri 27
Mar
05:00

SSE
SSE

9 / 18 mph -5 / -21°F 90% 1010 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 38%
Most Significant Cloud Type: medium
20%
0.0 In
11:00

SSE
SSE

9 / 18 mph -1 / -16°F 96% 1003 mb
Low level cloud: 24%
Mid level cloud: 14%
High level cloud: 4%
Most Significant Cloud Type: low
29%
0.0 In
17:00

SE
SE

9 / 18 mph 6 / -7°F 83% 1006 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 100%
Most Significant Cloud Type: medium
7%
0.0 In
23:00

SE
SE

11 / 22 mph 0 / -16°F 96% 998 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 13%
Most Significant Cloud Type: medium
4%
0.0 In
Sat 28
Mar
05:00

S
S

9 / 18 mph -9 / -26°F 96% 1006 mb
Low level cloud: 9%
Mid level cloud: 0%
High level cloud: 90%
Most Significant Cloud Type: medium
28%
0.0 In
11:00

SSW
SSW

10 / 21 mph 10 / -4°F 88% 998 mb
Low level cloud: 0%
Mid level cloud: 97%
High level cloud: 8%
Most Significant Cloud Type: medium
97%
0.0 In
17:00

SSW
SSW

8 / 15 mph 6 / -6°F 88% 1007 mb
Low level cloud: 4%
Mid level cloud: 43%
High level cloud: 20%
Most Significant Cloud Type: medium
56%
0.0 In
23:00

ENE
ENE

12 / 26 mph 5 / -12°F 95% 998 mb
Low level cloud: 4%
Mid level cloud: 4%
High level cloud: 14%
Most Significant Cloud Type: low
7%
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