Barometric pressure in Hollywood today
Falling
Apart from the daily swing, pressure has fallen steadily over the past day. It now reads 3 hPa lower than at this time yesterday. Day to day, it falls slowly until Tuesday, then rises slowly for the rest of the week.
Current sea-level reading for Hollywood, as of 04:00 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.
Hollywood sits 125 m above sea level, so a barometer in the city reads about 14 hPa lower than the sea-level figure. A home station set to the local reading should show about 1000 hPa as of 04:00.
The week ahead: the pressure forecast day by day
Each day at a glance: which way pressure moves, and how far.
36° / 20°Moves between 1013 and 1016 hPa and ends clearly higher.Show hourly graph
34° / 21°Moves between 1013 and 1016 hPa and ends a little lower.Show hourly graph32° / 19°Falls steadily to 1011 by the afternoon, then edges back up a little.Show hourly graph
21°29° / 18°Falls steadily to 1009 by the afternoon, then edges back up a little.Show hourly graph
23° / 15°3.0 mmMoves between 1010 and 1012 hPa and ends a little higher.Show hourly graph
18° / 14°24.6 mmMoves between 1011 and 1013 hPa and ends a little higher.Show hourly graph20° / 13°0.6 mmHolds near 1012 until morning, then rises steadily to 1016 by the end of the day.Show hourly graph
13°The day that changes most: Thursday, up 4 hPa.
Hour by hour
| Hour | Weather and temperature | Rain (mm) | Pressure (hPa) |
|---|---|---|---|
| 00:00 |  24° | 1014 | |
| 01:00 | 23° | 1014 | |
| 02:00 | 22° | 1014 | |
| 03:00 | 22° | 1014 | |
| 04:00 | 21° | 1014 | |
| 05:00 | 21° | 1015 | |
| 06:00 | 20° | 1015 | |
| 07:00 | 20° | 1015 | |
| 08:00 | 21° | 1016 | |
| 09:00 | 24° | 1016 | |
| 10:00 | 27° | 1016 | |
| 11:00 | 30° | 1016 | |
| 12:00 | 33° | 1015 | |
| 13:00 | 35° | 1014 | |
| 14:00 | 36° | 1013 | |
| 15:00 | 36° | 1013 | |
| 16:00 | 36° | 1013 | |
| 17:00 | 35° | 1013 | |
| 18:00 | 34° | 1013 | |
| 19:00 | 32° | 1014 | |
| 20:00 | 30° | 1015 | |
| 21:00 | 29° | 1015 | |
| 22:00 | 27° | 1016 | |
| 23:00 | 26° | 1016 |
How much the pressure changes in Hollywood
In Hollywood the pressure changes most from December to March. In a typical October it changes by about 1.4 hPa from one day to the next, and it hardly ever rises or falls by more than 10 hPa.
When the pressure changes most
| Month | More than 5 hPa | More than 10 hPa |
|---|---|---|
| January | 3 | 0 |
| February | 4 | 0 |
| March | 3 | 0 |
| April | 2 | 0 |
| May | 1 | 0 |
| June | 0 | 0 |
| July | 0 | 0 |
| August | 0 | 0 |
| September | 0 | 0 |
| October | 1 | 0 |
| November | 2 | 0 |
| December | 4 | 0 |
Does the pressure change a lot in Hollywood?
Hollywood has more days with a change of more than 10 hPa than 48 out of every 100 large cities.
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 Hollywood, 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 Hollywood weather since 1940, on our sister site 
weatherjourney.com.
Questions about the pressure in Hollywood
What is the barometer reading in Hollywood right now?
Sea-level pressure in Hollywood is 1014 hPa as of 04:00 local time, unchanged over the last three hours. A barometer in the city itself, 125 m up, shows about 1000 hPa.
Is the barometer rising or falling in Hollywood today?
Apart from the daily swing, pressure has fallen steadily over the past day. It now reads 3 hPa lower than at this time yesterday. Over the last three hours it has not changed.
Has the pressure in Hollywood changed since yesterday?
Yes. At this time yesterday it read 1017 hPa; it is 3 hPa lower now.
What has the pressure in Hollywood been over the last few days?
Over the past 7 days it ran between 996 hPa (on Saturday night) and 1018 hPa (on Wednesday morning). The biggest change in any 24 hours was a rise of 14 hPa, in the 24 hours ending on Sunday night.
Is 1014 hPa high or low pressure?
Atmospheric pressure between about 1000 and 1025 hPa is ordinary at sea level. 1014 hPa sits in the middle of that range. In Hollywood most days average between 1009 and 1021 hPa. The last 24 hours average about 1015 hPa, within that usual range.
What is normal barometric pressure for Hollywood?
From 1991 to 2020 the sea-level average for Hollywood was 1015 hPa, and most days average between 1009 and 1021 hPa. It is usually highest in December and January and lowest from June to September.
When does barometric pressure change the most in Hollywood?
The pressure in Hollywood changes most from December to March. Between 1991 and 2020, Hollywood had about one day a year with a big change, of more than 10 hPa from one day to the next.
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 Hollywood, which stands 125 m above sea level, is in the note above: about 14 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.
