WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Luts'k 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Luts'k

Ukraine

Long range weather outlook for Luts'k includes 14 day forecast summary:

Taking a look at Luts'k over the coming two weeks and the average daytime maximum temperature will be around -3°C, with a high for the two weeks of 3°C expected on the afternoon of Friday 6th. The mean minimum temperature will be -8°C, dipping to its lowest on the morning of Monday 2nd at -16°C. Expect the coming 14 days to remain predominantly dry. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Thu 29
Jan
20:00

NE
NE

8 / 11 mph 33 / 26°F 98% 1005 mb
Low level cloud: 98%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

ENE
ENE

9 / 13 mph 32 / 25°F 98% 1006 mb
Low level cloud: 100%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 30
Jan
02:00

ENE
ENE

10 / 14 mph 31 / 23°F 96% 1007 mb
Low level cloud: 100%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

ENE
ENE

13 / 18 mph 28 / 17°F 94% 1008 mb
Low level cloud: 96%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

ENE
ENE

13 / 17 mph 23 / 11°F 91% 1009 mb
Low level cloud: 84%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ENE
ENE

13 / 17 mph 21 / 8°F 87% 1011 mb
Low level cloud: 83%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

NE
NE

13 / 16 mph 22 / 10°F 86% 1011 mb
Low level cloud: 100%
Mid level cloud: 9%
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

NE
NE

13 / 17 mph 18 / 5°F 91% 1012 mb
Low level cloud: 100%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NE
NE

11 / 15 mph 16 / 2°F 93% 1013 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
23:00

NE
NE

11 / 15 mph 14 / 0°F 93% 1014 mb
Low level cloud: 100%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 31
Jan
02:00

NE
NE

11 / 20 mph 8 / -6°F 94% 1014 mb
Low level cloud: 87%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NE
NE

11 / 21 mph 7 / -8°F 94% 1015 mb
Low level cloud: 100%
Mid level cloud: 0%
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

NE
NE

11 / 15 mph 9 / -6°F 93% 1016 mb
Low level cloud: 100%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ENE
ENE

13 / 15 mph 13 / -2°F 88% 1017 mb
Low level cloud: 100%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

ENE
ENE

13 / 16 mph 15 / 1°F 86% 1018 mb
Low level cloud: 100%
Mid level cloud: 0%
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

NE
NE

12 / 14 mph 15 / 1°F 88% 1019 mb
Low level cloud: 78%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

NE
NE

11 / 14 mph 12 / -2°F 88% 1021 mb
Low level cloud: 17%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

NE
NE

9 / 12 mph 10 / -3°F 90% 1023 mb
Low level cloud: 27%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 01
Feb
02:00

NE
NE

9 / 14 mph 7 / -7°F 92% 1024 mb
Low level cloud: 39%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

NE
NE

8 / 12 mph 6 / -7°F 92% 1025 mb
Low level cloud: 29%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

ENE
ENE

8 / 11 mph 5 / -8°F 92% 1026 mb
Low level cloud: 16%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ENE
ENE

9 / 12 mph 9 / -5°F 79% 1027 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
14:00

ENE
ENE

9 / 12 mph 12 / 0°F 74% 1027 mb
Low level cloud: 7%
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
17:00

ENE
ENE

8 / 11 mph 11 / -1°F 86% 1027 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

ENE
ENE

8 / 12 mph 7 / -6°F 92% 1027 mb
Low level cloud: 25%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

ENE
ENE

8 / 12 mph 6 / -7°F 94% 1028 mb
Low level cloud: 25%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 02
Feb
02:00

E
E

6 / 9 mph 5 / -7°F 92% 1028 mb
Low level cloud: 10%
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
05:00

ENE
ENE

7 / 11 mph 4 / -9°F 92% 1027 mb
Low level cloud: 1%
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
08:00

E
E

8 / 13 mph 3 / -10°F 86% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 9%
Most Significant Cloud Type: high
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ESE
ESE

8 / 11 mph 7 / -6°F 74% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 90%
Most Significant Cloud Type: high
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

E
E

9 / 11 mph 11 / -1°F 69% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

E
E

7 / 11 mph 9 / -2°F 83% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 30%
Most Significant Cloud Type: high
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

ESE
ESE

6 / 11 mph 7 / -4°F 85% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 21%
Most Significant Cloud Type: high
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

ESE
ESE

7 / 13 mph 6 / -6°F 82% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 03
Feb
02:00

ESE
ESE

7 / 13 mph 6 / -6°F 80% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

ESE
ESE

7 / 12 mph 6 / -6°F 83% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

ESE
ESE

8 / 14 mph 6 / -6°F 77% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SE
SE

9 / 13 mph 11 / -1°F 66% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 34%
Most Significant Cloud Type: high
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SE
SE

9 / 12 mph 16 / 4°F 66% 1026 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 32%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

ESE
ESE

8 / 14 mph 12 / 1°F 83% 1026 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 100%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

ESE
ESE

7 / 15 mph 10 / -1°F 84% 1027 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 14%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

SE
SE

8 / 16 mph 9 / -3°F 84% 1028 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
Wed 04
Feb
02:00

SE
SE

7 / 15 mph 9 / -2°F 82% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 18%
Most Significant Cloud Type: high
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

ESE
ESE

8 / 17 mph 10 / -2°F 82% 1027 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 21%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

SE
SE

8 / 16 mph 10 / -2°F 82% 1027 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 8%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

SE
SE

9 / 15 mph 17 / 6°F 78% 1027 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 97%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

SE
SE

10 / 15 mph 22 / 11°F 81% 1025 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
17:00

SE
SE

11 / 18 mph 21 / 10°F 85% 1024 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 80%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
20:00

SE
SE

10 / 17 mph 21 / 10°F 89% 1023 mb
Low level cloud: 79%
Mid level cloud: 49%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
23:00

SE
SE

11 / 18 mph 23 / 12°F 89% 1021 mb
Low level cloud: 96%
Mid level cloud: 87%
High level cloud: 97%
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
Thu 05
Feb
02:00

ESE
ESE

10 / 17 mph 7 / -7°F 94% 1021 mb
Low level cloud: 50%
Mid level cloud: 9%
High level cloud: 90%
Most Significant Cloud Type: low
63%
0.0 In
08:00

ENE
ENE

8 / 12 mph 12 / 1°F 95% 1018 mb
Low level cloud: 65%
Mid level cloud: 45%
High level cloud: 32%
Most Significant Cloud Type: low
84%
0.0 In
14:00

E
E

12 / 16 mph 15 / 1°F 76% 1017 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 10%
Most Significant Cloud Type: medium
100%
0.0 In
20:00

SE
SE

15 / 21 mph 33 / 23°F 95% 1008 mb
Low level cloud: 100%
Mid level cloud: 91%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Fri 06
Feb
02:00

ESE
ESE

14 / 23 mph 29 / 18°F 94% 1009 mb
Low level cloud: 100%
Mid level cloud: 24%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.0 In
08:00

S
S

6 / 12 mph 34 / 28°F 96% 1001 mb
Low level cloud: 90%
Mid level cloud: 64%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
14:00

SSE
SSE

12 / 17 mph 35 / 26°F 97% 1010 mb
Low level cloud: 100%
Mid level cloud: 52%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
20:00

SSE
SSE

16 / 26 mph 34 / 24°F 94% 1006 mb
Low level cloud: 79%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Sat 07
Feb
02:00

SSW
SSW

4 / 8 mph 35 / 31°F 92% 1003 mb
Low level cloud: 28%
Mid level cloud: 94%
High level cloud: 13%
Most Significant Cloud Type: medium
100%
0.0 In
08:00

SSE
SSE

15 / 25 mph 34 / 24°F 95% 1002 mb
Low level cloud: 78%
Mid level cloud: 97%
High level cloud: 18%
Most Significant Cloud Type: low
100%
0.1 In
14:00

NNE
NNE

4 / 6 mph 37 / 35°F 100% 1005 mb
Low level cloud: 43%
Mid level cloud: 66%
High level cloud: 56%
Most Significant Cloud Type: low
100%
0.0 In
20:00

SSE
SSE

11 / 19 mph 34 / 26°F 98% 1001 mb
Low level cloud: 100%
Mid level cloud: 70%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
Sun 08
Feb
02:00

E
E

5 / 10 mph 33 / 28°F 97% 1007 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
08:00

SSW
SSW

7 / 14 mph 35 / 29°F 99% 1001 mb
Low level cloud: 84%
Mid level cloud: 57%
High level cloud: 9%
Most Significant Cloud Type: low
100%
0.1 In
14:00

WSW
WSW

8 / 13 mph 35 / 29°F 99% 1007 mb
Low level cloud: 96%
Mid level cloud: 83%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
20:00

SW
SW

7 / 13 mph 36 / 31°F 95% 1002 mb
Low level cloud: 96%
Mid level cloud: 97%
High level cloud: 1%
Most Significant Cloud Type: low
100%
0.0 In
Mon 09
Feb
02:00

SW
SW

4 / 7 mph 35 / 31°F 98% 1006 mb
Low level cloud: 92%
Mid level cloud: 50%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
08:00

W
W

9 / 12 mph 34 / 27°F 95% 1003 mb
Low level cloud: 100%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
14:00

NE
NE

4 / 5 mph 36 / 33°F 99% 1005 mb
Low level cloud: 99%
Mid level cloud: 67%
High level cloud: 17%
Most Significant Cloud Type: low
100%
0.0 In
20:00

SW
SW

4 / 5 mph 38 / 34°F 96% 1003 mb
Low level cloud: 81%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Tue 10
Feb
02:00

NNW
NNW

3 / 4 mph 35 / 33°F 86% 1004 mb
Low level cloud: 77%
Mid level cloud: 9%
High level cloud: 19%
Most Significant Cloud Type: low
82%
0.0 In
08:00

SE
SE

9 / 15 mph 34 / 27°F 93% 1003 mb
Low level cloud: 63%
Mid level cloud: 97%
High level cloud: 84%
Most Significant Cloud Type: low
100%
0.0 In
14:00

ENE
ENE

11 / 15 mph 34 / 26°F 92% 997 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
20:00

SSE
SSE

7 / 9 mph 36 / 31°F 95% 1002 mb
Low level cloud: 44%
Mid level cloud: 100%
High level cloud: 11%
Most Significant Cloud Type: low
80%
0.0 In
Wed 11
Feb
02:00

NNE
NNE

9 / 13 mph 29 / 21°F 96% 996 mb
Low level cloud: 94%
Mid level cloud: 64%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
08:00

WSW
WSW

5 / 7 mph 36 / 31°F 99% 1005 mb
Low level cloud: 79%
Mid level cloud: 44%
High level cloud: 6%
Most Significant Cloud Type: low
95%
0.2 In
14:00

NNW
NNW

8 / 9 mph 34 / 27°F 92% 1002 mb
Low level cloud: 92%
Mid level cloud: 59%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
20:00

SSE
SSE

12 / 21 mph 37 / 28°F 92% 1003 mb
Low level cloud: 13%
Mid level cloud: 83%
High level cloud: 97%
Most Significant Cloud Type: medium
100%
0.0 In
Thu 12
Feb
02:00

WNW
WNW

9 / 16 mph 27 / 18°F 90% 1010 mb
Low level cloud: 82%
Mid level cloud: 100%
High level cloud: 48%
Most Significant Cloud Type: low
100%
0.0 In
08:00

SSE
SSE

14 / 25 mph 39 / 31°F 86% 996 mb
Low level cloud: 44%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
91%
0.0 In
14:00

WSW
WSW

11 / 15 mph 31 / 22°F 78% 1014 mb
Low level cloud: 100%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
20:00

W
W

17 / 23 mph 41 / 33°F 90% 996 mb
Low level cloud: 95%
Mid level cloud: 47%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Fri 13
Feb
02:00

WSW
WSW

11 / 16 mph 27 / 17°F 89% 1014 mb
Low level cloud: 61%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
65%
0.0 In
08:00

SE
SE

4 / 8 mph 38 / 34°F 89% 1002 mb
Low level cloud: 71%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: low
85%
0.0 In
14:00

W
W

9 / 12 mph 30 / 22°F 70% 1012 mb
Low level cloud: 100%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
20:00

S
S

7 / 15 mph 42 / 37°F 88% 1001 mb
Low level cloud: 81%
Mid level cloud: 51%
High level cloud: 16%
Most Significant Cloud Type: low
100%
0.0 In

Other Locations Near to Luts'k

Cities and Towns: Dubno, Ukraine

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