Norsk versjon.
api.met.no/weatherapi is an interface to a selection of data produced by MET Norway.
The data are available for use under a Creative Commons license.
See also separate conditions for use of the service.
Several people have developed third-party client
libraries for various programming languages.
All regular users of the API are strongly recommended to subscribe to our
API-users mailing list
as this is the only channel on which we will communicate planned changes outside
the API itself (see the archives
for past notifications).
For operational status and maintenance notifications, see status.met.no
(please bookmark in case there is a problem with the site).
For information on available data and how to access them, please
refer to the weatherapi
documentation. For a list of changes since version 2,
see the Release Notes for v.3.
Data owned by other institutions than MET Norway
is not available for unrestricted public use. This is
specified in the documentation of each product. Examples of such
products are the Nordic radar images and some satellite images.
Refer to the documentation of each product.
Available products:
Alerts ⚠
- Airqualityforecast 0.1
- Forecast of air-quality for locations in Norway
- MetAlerts 1.1
- Weather alerts from the Norwegian Meteorological Institute
Astronomy 🌣
- Sunrise 2.0
- Calculate sun/moon rise/set for a given place
Aviation ✈
- Aviationforecast 1.6
- Textual aviation weather forecasts
- NLAroutes 1.0
- Vertical cross sections for air ambulance flight routes
- Routeforecast 1.0
- Maps and vertical cross sections for flight routes offshore and over land
- Sigcharts 2.0
- Significant Weather Charts for aviation
- Sigmets 2.0
- Get sigmets and airmets for Norway
- Spotwind 1.1
- Spotwind forecasts for airport landing systems
- Tafmetar 1.0
- Receive Taf/Metar from airports
- Turbulence 1.1
- Turbulence prognosis
- VerticalProfile 1.1
- Vertical weather profiles for aviation
- Volcanicashforecast 0.1
- Norwegian national volcanic ash products including forecast
Lightning ☇
- Frost 0.9
- REST API for meteorogical observation data
- Radar 2.0
- Radar images from various locations
- THREDDS 1.0
- Dataset archive including model runs and observation timeseries
Marine ⚓
- Gribfiles 1.1
- Serve grib files on the coast from Oslo and Western Norway
- Icemap 1.0
- Maps as images showing current ice conditions in the arctic regions.
- Oceanforecast 2.0
- Ocean forecasts for points at sea in Northwestern Europe
- Oslofjord 0.1
- Current maps for Oslofjorden and Drammensfjorden
- Soundprofile 1.0
- Vertical profiles in the ocean off the Norwegian coast
- THREDDS 1.0
- Dataset archive including model runs and observation timeseries
- Textforecast 2.0
- Textual weather forecast for Norwegian land and sea areas
- Tidalwater 1.1
- Tidal water information
Military ⚔
- Metgc 1.0
- Deliver meteorological forecast data in METGM/C format for defined areas
- Metgm 1.0
- Deliver meteorological forecast data in METGM/C format for defined areas
Observations 🌡
- Frost 0.9
- REST API for meteorogical observation data
- THREDDS 1.0
- Dataset archive including model runs and observation timeseries
Other ⚙
- Weathericon 2.0
- collection of weather icons.
Satellite 🛰
- Geosatellite 1.4
- Images from geostationary satellites
- Polarsatellite 1.1
- Images from satellites in polar orbit
- THREDDS 1.0
- Dataset archive including model runs and observation timeseries
Weather ⛅
- Frost 0.9
- REST API for meteorogical observation data
- Locationforecast 2.0
- Weather forecast for a specified place
- Nowcast 2.0
- Immediate weather forecast for specified locations in the Nordic area
- Oceanforecast 2.0
- Ocean forecasts for points at sea in Northwestern Europe
- Radar 2.0
- Radar images from various locations
- Subjectiveforecast 1.0
- Forecasts and analyses charts from the meteorologist
- THREDDS 1.0
- Dataset archive including model runs and observation timeseries
- Textforecast 2.0
- Textual weather forecast for Norwegian land and sea areas
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New API servers
On Wednesday 10 Nov we will start moving the API traffic to a new server cluster
which promises much better performance, due to faster processors and extensive
use of SSD disks. Hopefully this will result in shorter response times and a
higher turnaround. We'll start propagating the changes via DNS around 10:00 CET.
We have done extensive testing of the new servers, but since the file
distribution chain is a separate system it could possibly happen that some data
have been forgotten by the backend producers. If there are something you feel is
missing, please let us know ASAP at weatherapi-adm@met.no.
The change will at first only affect traffic going to https://api.met.no/. Those
with special arrangements (other domains) will be notified later when it's time
to move their traffic.
Aviation product changes
We will shortly be adding 22 new routes (vertical cross sections) to
Routeforecast. At the same time we will be reducing the number of time steps
from the current 84 to 22 (as stated in the documentation). This should result
in better performance in generating the available lists.
There will also soon be a similar increase in the number of routes for
NLAroutes, as well as a similar reduction in time steps.
The new sigcharts version 2.0 with Nordic maps is expected to go out of beta
on 1 December, at which time we will deprecate the current version (don't worry,
you will have time to migrate after the New Year).
We will also soon be launching a new option in Tafmetar, giving additional
information such as AMD and COR (for TAFs), as well as COR, SPECI and AUTO (for
METARs). These will prefix the existing messages, and can be enabled by using
the parameter extended=true. More information on this later.
Finally, the IGA warnings will be removed from Aviationforecast in December.
EOL for the old Yr API
As previously mentioned, the "free weather data" API on yr.no is going away, and
will be turned off completely on 1 February 2022. This will affect both the XML
data (varsel.xml and forecast.xml) and the HTML widgets currently used on many
websites. Until then the services will suffer planned outages of increasing
length, informing developers of the need to change to newer services.
For more information, see the Yr Developer docs or contact NRK at support@yr.no.
https://developer.yr.no/doc/guides/deprecating-old-widgets/
New version of available?
Finally, we are planning to replace our existing, home-grown "available" method
with something a bit more effective, preferably using existing standards. It has
been more or less unchanged since the launch of the API in 2007, and since then
the amount of available files has grown enormously (we currently deliver over
5000 files for some products). This means the complete list can take several
seconds to generate, which is a problem for the total API performance.
We are looking at some of the new OGC standards, which fully support OpenAPI and
should in time hopefully be supported by standard libraries for the most used
programming languages. If you are interested you can find some documentation
here:
https://ogcapi.ogc.org/edr/overview.html
If you have some specific requests for new features in the "available2"
functionality we would very much like to hear from you.
A short update, mainly of interest to Nordic users:
Sigcharts 2.0 beta
We have a new version of Sigcharts which, in addition to the previous
Arctic/Norway also covers the Nordic/Baltic regian (minus Iceland). Also, the
search interface has been made consistent with the rest of the API:
https://api.met.no/weatherapi/sigcharts/2.0/documentation
While currently in beta we suggest you start using this after the summer is
over. We're not sure how long the current version 1.0 will live, this depends on
how soon our regular users will take to implement the new version.
Forestfire index
As mentioned some weeks ago, the Forestfireindex product has been terminated and
replaced with a new, map-based service:
https://skogbrannfare.met.no/
For those wishing to download the raw data used for the maps, these can now be
found on our THREDDS server:
https://thredds.met.no/thredds/projects/fwi.html
TOS addition
With the ongoing migration of users from the Yr API to api.met.no, we've had to update our Terms of Service with a notice on trademark restrictions:
You are not allowed to make services/sites that appear to be made by Yr, NRK
or The Norwegian Meteorological Institute. In other words, you may not use the
word "yr" as a part of your service name, or attach the yr logo to your
service.
https://api.met.no/doc/TermsOfService
This was previously only stated on the conditions of use on yr.no, but as the
old Yr site (retro.yr.no) is closing down soon we've had to transfer the clause
to the api.met.no TOS (incredibly, some users are still referring to this as the
"Yr API", even though they were two different APIs and Yr is a completely
different site run by the Norwegian Broadcasting Corporation).
News archive
Change log
- Sigcharts: Version 2.0 in production: 2022-01-04
The old version 1.0 is now deprecated, and will be terminated on June 1st, 2022 - Routeforecast: Several IGA routes added: 2021-11-23
In addition to the 12 offshore routes in vcross, we have now added 27 new routes
over land. These are prefixed with "iga-". - Aviationforecast: IGA forecast deprecated, 2021-11-16
The IGA text forecasts will terminate on 2022-03-01, to be replaced
with graphical forecasts in the Routeforecast product (route=iga-XXXX-YYYY). - Sigcharts: Version 2.0 beta: 2021-07-13
Added Nordic area, params made consistent with rest of API - Locationforecast: Probabilities added: 2021-05-10
As a replacement for the deprecated Probabilityforecast product (to be removed
on 2021-07-01), we have added some new variables to the `complete.json`
forecast: air_temperature_percentile_10
air_temperature_percentile_90
wind_speed_percentile_10
wind_speed_percentile_90
- Oceanforecast: Version 2.0 in production, 2021-05-10
Added coverage, improved error handling.
Version 0.9 will expire on 2021-07-01.
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Other data sources at MET Norway
- Frost, API for observations and climate data
- THREDDS for model and research data, including sea and ice models
See free meteorological data on met.no
for a complete list of data services.
Questions?
For questions regarding rights to and use of data, see our Licensing and Data Policy.
For handling of personal data, see MET Norway's Privacy Policy Statement.
For technical questions, see our contact page.
