Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Sari 14 Day Long Range Forecast

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

Iran

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

The next 14 day outlook for Sari shows the average daytime maximum temperature will be around 27°C, with a high for the two weeks of 31°C expected on the afternoon of Friday 19th. The mean minimum temperature will be 18°C, dipping to its lowest on the morning of Monday 22nd at 16°C. The fortnight ahead will have some days seeing a little precipitation and some days with rain. Current predictions suggest Sunday 21st will have the most precipitation with an accumulation of around 9.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 13
Sep		21:30

NE
NE

 2 / 3 mph 73 / 77°F 76% 1019 mb
Low level cloud: 91%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 14
Sep		00:30

SE
SE

 1 / 2 mph 72 / 76°F 77% 1019 mb
Low level cloud: 74%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:30

SE
SE

 1 / 1 mph 70 / 70°F 83% 1019 mb
Low level cloud: 57%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:30

SE
SE

 2 / 3 mph 73 / 76°F 80% 1019 mb
Low level cloud: 26%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:30

N
N

 5 / 6 mph 83 / 82°F 55% 1019 mb
Low level cloud: 16%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:30

N
N

 13 / 15 mph 87 / 86°F 47% 1017 mb
Low level cloud: 6%
Mid level cloud: 41%
High level cloud: 0%
Most Significant Cloud Type: medium
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:30

N
N

 12 / 13 mph 82 / 82°F 55% 1018 mb
Low level cloud: 36%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:30

N
N

 7 / 9 mph 75 / 78°F 68% 1020 mb
Low level cloud: 69%
Mid level cloud: 60%
High level cloud: 0%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

NNW
NNW

 5 / 6 mph 71 / 71°F 86% 1022 mb
Low level cloud: 96%
Mid level cloud: 86%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Mon 15
Sep		00:30

NNE
NNE

 8 / 9 mph 68 / 68°F 89% 1022 mb
Low level cloud: 99%
Mid level cloud: 96%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:30

E
E

 2 / 3 mph 67 / 67°F 92% 1022 mb
Low level cloud: 96%
Mid level cloud: 88%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
06:30

SW
SW

 0 / 0 mph 67 / 67°F 91% 1022 mb
Low level cloud: 95%
Mid level cloud: 99%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:30

NE
NE

 3 / 4 mph 67 / 67°F 93% 1022 mb
Low level cloud: 96%
Mid level cloud: 89%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:30

ENE
ENE

 4 / 5 mph 67 / 67°F 89% 1021 mb
Low level cloud: 84%
Mid level cloud: 64%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:30

NNE
NNE

 3 / 4 mph 69 / 69°F 81% 1020 mb
Low level cloud: 92%
Mid level cloud: 73%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:30

WSW
WSW

 0 / 0 mph 68 / 68°F 81% 1021 mb
Low level cloud: 89%
Mid level cloud: 62%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

SSE
SSE

 2 / 3 mph 67 / 67°F 78% 1021 mb
Low level cloud: 67%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 16
Sep		00:30

SE
SE

 2 / 4 mph 65 / 65°F 77% 1020 mb
Low level cloud: 17%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:30

SE
SE

 3 / 6 mph 62 / 62°F 78% 1019 mb
Low level cloud: 2%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:30

SE
SE

 3 / 5 mph 65 / 64°F 76% 1019 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:30

NE
NE

 6 / 6 mph 78 / 78°F 49% 1018 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:30

NNE
NNE

 12 / 13 mph 83 / 81°F 37% 1016 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:30

N
N

 11 / 13 mph 82 / 80°F 37% 1015 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:30

NNE
NNE

 4 / 7 mph 70 / 70°F 52% 1016 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

SSE
SSE

 4 / 7 mph 68 / 68°F 55% 1017 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
Wed 17
Sep		00:30

S
S

 4 / 9 mph 66 / 66°F 57% 1017 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:30

S
S

 5 / 11 mph 64 / 64°F 62% 1017 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
06:30

S
S

 5 / 9 mph 67 / 65°F 61% 1018 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:30

NW
NW

 4 / 5 mph 81 / 79°F 42% 1017 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:30

NNW
NNW

 9 / 11 mph 85 / 83°F 36% 1015 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
15:30

NNW
NNW

 11 / 13 mph 83 / 81°F 39% 1014 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:30

NE
NE

 3 / 7 mph 70 / 70°F 54% 1016 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

SSE
SSE

 5 / 10 mph 68 / 68°F 54% 1016 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 33%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 18
Sep		00:30

S
S

 2 / 4 mph 67 / 67°F 55% 1015 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 11%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:30

SSW
SSW

 3 / 7 mph 66 / 65°F 65% 1013 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:30

NNE
NNE

 1 / 2 mph 69 / 67°F 66% 1012 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:30

NW
NW

 4 / 5 mph 81 / 79°F 45% 1012 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:30

NNW
NNW

 10 / 11 mph 85 / 83°F 37% 1010 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:30

NNW
NNW

 10 / 11 mph 85 / 83°F 38% 1009 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:30

NNE
NNE

 2 / 3 mph 74 / 77°F 52% 1009 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

SSW
SSW

 3 / 6 mph 70 / 70°F 56% 1009 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
Fri 19
Sep		00:30

SSW
SSW

 4 / 9 mph 68 / 68°F 62% 1008 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:30

SSW
SSW

 6 / 11 mph 66 / 66°F 69% 1007 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:30

SSW
SSW

 6 / 11 mph 68 / 66°F 66% 1008 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:30

W
W

 7 / 8 mph 82 / 81°F 49% 1007 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
12:30

NW
NW

 9 / 10 mph 87 / 86°F 42% 1006 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
15:30

NW
NW

 12 / 14 mph 84 / 84°F 50% 1006 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:30

WSW
WSW

 5 / 7 mph 76 / 79°F 68% 1008 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:30

WSW
WSW

 7 / 11 mph 72 / 72°F 76% 1009 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 20
Sep		03:30

SSE
SSE

 3 / 6 mph 70 / 70°F 76% 1012 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
09:30

NE
NE

 7 / 16 mph 84 / 85°F 49% 1009 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
15:30

NNE
NNE

 10 / 21 mph 89 / 90°F 39% 1006 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
21:30

E
E

 2 / 4 mph 76 / 80°F 78% 1015 mb
Low level cloud: 68%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
83%
0.0 In
Sun 21
Sep		03:30

SE
SE

 2 / 5 mph 70 / 70°F 84% 1012 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
09:30

W
W

 7 / 15 mph 80 / 82°F 63% 1013 mb
Low level cloud: 63%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
72%
0.0 In
15:30

WSW
WSW

 5 / 10 mph 73 / 77°F 68% 1020 mb
Low level cloud: 68%
Mid level cloud: 70%
High level cloud: 0%
Most Significant Cloud Type: low
92%
0.0 In
21:30

S
S

 5 / 10 mph 66 / 66°F 87% 1017 mb
Low level cloud: 55%
Mid level cloud: 43%
High level cloud: 8%
Most Significant Cloud Type: low
71%
0.0 In
Mon 22
Sep		03:30

S
S

 3 / 6 mph 65 / 65°F 79% 1020 mb
Low level cloud: 53%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
68%
0.0 In
09:30

NE
NE

 5 / 10 mph 77 / 79°F 59% 1015 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
15:30

N
N

 10 / 22 mph 78 / 80°F 52% 1019 mb
Low level cloud: 1%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
0.0 In
21:30

SSE
SSE

 3 / 7 mph 71 / 71°F 75% 1016 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
Tue 23
Sep		03:30

S
S

 4 / 8 mph 68 / 68°F 80% 1019 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
09:30

NNE
NNE

 5 / 10 mph 78 / 80°F 59% 1018 mb
Low level cloud: 24%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
26%
0.0 In
15:30

N
N

 8 / 17 mph 82 / 83°F 48% 1016 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
21:30

SE
SE

 3 / 6 mph 73 / 77°F 75% 1018 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
0.0 In
Wed 24
Sep		03:30

S
S

 3 / 7 mph 70 / 70°F 74% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
09:30

NW
NW

 4 / 8 mph 81 / 83°F 55% 1019 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
15:30

N
N

 9 / 19 mph 83 / 85°F 49% 1013 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
21:30

S
S

 3 / 6 mph 73 / 77°F 60% 1018 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
Thu 25
Sep		03:30

SSW
SSW

 4 / 9 mph 70 / 70°F 80% 1014 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
09:30

WNW
WNW

 5 / 11 mph 81 / 82°F 47% 1017 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
15:30

NW
NW

 7 / 14 mph 78 / 80°F 66% 1016 mb
Low level cloud: 66%
Mid level cloud: 48%
High level cloud: 0%
Most Significant Cloud Type: low
83%
0.0 In
21:30

SSW
SSW

 4 / 9 mph 72 / 76°F 68% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
Fri 26
Sep		03:30

NNE
NNE

 4 / 9 mph 70 / 70°F 90% 1016 mb
Low level cloud: 95%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
09:30

WNW
WNW

 6 / 13 mph 80 / 82°F 57% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
15:30

NE
NE

 7 / 15 mph 73 / 77°F 84% 1015 mb
Low level cloud: 92%
Mid level cloud: 61%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
21:30

SE
SE

 3 / 6 mph 73 / 77°F 74% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Sat 27
Sep		03:30

SE
SE

 2 / 4 mph 65 / 65°F 90% 1013 mb
Low level cloud: 57%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
67%
0.0 In
09:30

WNW
WNW

 4 / 9 mph 82 / 84°F 56% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
15:30

NE
NE

 10 / 21 mph 72 / 71°F 63% 1014 mb
Low level cloud: 92%
Mid level cloud: 51%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
21:30

WSW
WSW

 5 / 11 mph 74 / 77°F 71% 1014 mb
Low level cloud: 93%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
98%
0.0 In
Sun 28
Sep		03:30

ENE
ENE

 7 / 15 mph 66 / 66°F 76% 1018 mb
Low level cloud: 98%
Mid level cloud: 94%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
09:30

WSW
WSW

 4 / 8 mph 72 / 76°F 76% 1018 mb
Low level cloud: 84%
Mid level cloud: 78%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
15:30

NNE
NNE

 7 / 15 mph 72 / 76°F 57% 1017 mb
Low level cloud: 3%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: medium
38%
0.0 In
21:30

SE
SE

 3 / 6 mph 65 / 65°F 89% 1026 mb
Low level cloud: 51%
Mid level cloud: 73%
High level cloud: 0%
Most Significant Cloud Type: low
76%
0.6 In

Other Locations Near to Sari

Cities and Towns: Man'ba e Ab, Iran

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