Barometric pressure in Kassala today
Steady
Daily swings aside, pressure has hardly changed over the last 24 hours. It reads the same as this time yesterday. Day to day, it rises slowly until Sunday.
Current sea-level reading for Kassala, as of 13:00 local time.
Pressure graph: the past week and the week ahead
The shaded part shows the days already gone. The thicker line is the forecast. The thin dotted line is the average over a whole day, so you can see where pressure is heading under the daily up and down.
Kassala has a strong daily rhythm: pressure rises and falls about 6 hPa every day, highest around 08:00 and 23:00 and lowest around 15:00. That wave is most of what the graph shows within a day, so the change since yesterday tells you more here than the change over the past few hours.
Kassala sits 507 m above sea level, so a barometer in the city reads about 54 hPa lower than the sea-level figure. A home station set to the local reading should show about 951 hPa as of 13:00.
The week ahead: the pressure forecast day by day
Each day at a glance: which way pressure moves, and how far.
41° / 28°The regular daily rise and fall, between 1003 and 1009 hPa, ending about where it started.Show hourly graph
39° / 27°The regular daily rise and fall, between 1006 and 1011 hPa, ending a little higher.Show hourly graph39° / 27°Much the same again: the daily rise and fall, 1006 to 1012 hPa, ending a little higher.Show hourly graph41° / 26°The regular daily rise and fall, between 1005 and 1011 hPa, ending a little lower.Show hourly graph42° / 26°The regular daily rise and fall, between 1005 and 1012 hPa, ending about where it started.Show hourly graph41° / 26°Much the same again: the daily rise and fall, 1005 to 1012 hPa, ending about where it started.Show hourly graph41° / 27°The regular daily rise and fall, between 1005 and 1010 hPa, ending a little lower.Show hourly graphNo day ends more than 1 hPa from where it started, though each day rises and falls in between.
Hour by hour
| Hour | Weather and temperature | Rain (mm) | Pressure (hPa) |
|---|---|---|---|
| 00:00 |  31° | 1008 | |
| 01:00 | 30° | 1008 | |
| 02:00 |  29° | 1007 | |
| 03:00 | 28° | 1007 | |
| 04:00 | 28° | 1007 | |
| 05:00 | 28° | 1007 | |
| 06:00 | 29° | 1008 | |
| 07:00 | 31° | 1009 | |
| 08:00 | 33° | 1009 | |
| 09:00 | 35° | 1009 | |
| 10:00 | 38° | 1008 | |
| 11:00 | 40° | 1007 | |
| 12:00 | 40° | 1006 | |
| 13:00 | 41° | 1005 | |
| 14:00 | 41° | 1004 | |
| 15:00 | 40° | 1004 | |
| 16:00 | 39° | 1003 | |
| 17:00 | 38° | 1004 | |
| 18:00 | 37° | 1004 | |
| 19:00 | 35° | 1005 | |
| 20:00 | 34° | 1006 | |
| 21:00 | 33° | 1007 | |
| 22:00 | 32° | 1007 | |
| 23:00 | 32° | 1008 |
How much the pressure changes in Kassala
In Kassala the pressure hardly changes from one day to the next. All year round a typical day’s change is about 0.8 hPa.
Does the pressure change a lot in Kassala?
Kassala, like about 46 out of every 100 large cities, almost never has a change of more than 10 hPa from one day to the next.
Each dot stands for up to 20 cities with 100,000 people or more. The first column is much taller than shown. Cities higher than 1,000 m are left out, and so are smaller cities within 15 km of a bigger one, unless they are capitals, so that suburbs are not counted twice.
These figures come from ERA5, in which the European weather centre ECMWF rebuilds past weather from a weather model and observations, for an area about 28 km across around Kassala, 1991 to 2020. Each change is the difference between one day’s average pressure and the next day’s.
Cities nearby
Open one to see its pressure, or search for your own city at the top of the page.
More about air pressure
What we have written about how pressure behaves and how it is measured.
Where air pressure changes the most, city by city
Thirty years of data, ranked by city: where air pressure swings most from day to day and where it hardly moves. London, New York, Tokyo and 128 more.
How much does air pressure change in a day?
A normal day moves the barometer about 4 hPa in London and half of one in Singapore. What counts as a big drop, and how often one comes.
Why barometric pressure deserved its own site
Air pressure is the weather number people ask about most and understand least: is it high, is it rising or falling, does it matter today.
Is this weather normal for the season? See how these days compare with Kassala weather since 1940, on our sister site 
weatherjourney.com.
Questions about the pressure in Kassala
What is the barometer reading in Kassala right now?
Sea-level pressure in Kassala is 1005 hPa as of 13:00 local time, down 3 hPa over the last three hours, the usual daily fall at this hour. A barometer in the city itself, 507 m up, shows about 951 hPa.
Is the barometer rising or falling in Kassala today?
Daily swings aside, pressure has hardly changed over the last 24 hours. It reads the same as this time yesterday. Over the last three hours it has gone down 3 hPa, the usual daily fall at this hour.
Has the pressure in Kassala changed since yesterday?
No. At this time yesterday it read 1005 hPa, the same as now.
What has the pressure in Kassala been over the last few days?
Over the past 7 days it ran between 1004 hPa (yesterday afternoon) and 1014 hPa (on Tuesday morning). The biggest change in any 24 hours was a rise of 4 hPa, in the 24 hours ending on Sunday night. Before today, each day's average was between 1007 and 1011 hPa.
Is 1005 hPa high or low pressure?
Atmospheric pressure between about 1000 and 1025 hPa is ordinary at sea level. 1005 hPa is on the low side of ordinary. In Kassala most days average between 1005 and 1013 hPa. The last 24 hours average about 1007 hPa, within that usual range.
What is normal barometric pressure for Kassala?
From 1991 to 2020 the sea-level average for Kassala was 1009 hPa, and most days average between 1005 and 1013 hPa. It is usually highest in December and January and lowest in April and May.
When does barometric pressure change the most in Kassala?
No time of year stands out: the pressure in Kassala barely changes from one day to the next all year round. Between 1991 and 2020, a typical day’s change was about 0.8 hPa, and a change of more than 10 hPa never happened.
Why does my own barometer show a different number?
Usually altitude, and sometimes the instrument itself. To compare cities, pressure is corrected to sea level. The figure for Kassala, which stands 507 m above sea level, is in the note above: about 54 hPa below the sea-level reading. If your barometer is already set to sea level and still reads slightly differently, that is the setting on the instrument rather than the weather.
Does falling pressure mean rain?
Not by itself. Away from the tropics, falling pressure usually means a low is approaching, and lows carry the fronts that bring cloud and rain, so the two often arrive together. But a shallow fall can pass with nothing more than cloud, and rain falls under steady pressure too. The graph tells you a system is on the way, not how wet it will be. The week ahead, just above, shows the rain forecast beside the pressure.
