This API is for to fetch data from The Finnish Meteorological Institute's Open Data, and convert it from XML to JSON.
The data is forecast data, which is updated every 6 hours. It shows, for example, temperature from 2m height, air pressure, cloud coverage, the amount of rain etc 48 hours forward.
ℹ This converter uses HIRLAM-model which use FMI will be discontinued in September 2022.
"--, HARMONIE (MEPS) model is capable of 2.5 km horizontal resolution (compared to 7.5 km of HIRLAM) and able to predict small scale phenomena more accurately."
- Clone/download repository
- Install required npm packages
npm i - Start REST API
npm run start- For devs,
npm run dev
- For devs,
localhost:8080/weather//weather/:location
- Clone/download repository
- Go to the folder
./utils/ - Run
node weather.js <location>- For example
node weather.js Jyväskylä - Default location
Helsinki.
- For example
The data also includes WeatherSymbol3 parameters, which is described in fmidev's opendata-resources
Click to open/close
ID WEATHER
1 clear / selkeää
2 partly cloudy / puolipilvistä
3 clouds / pilvistä
21 light showers / heikkoja sadekuuroja
22 showers / sadekuuroja
23 heavy showers voimakkaita sadekuuroja
31 light rain / heikkoa vesisadetta
32 rain / vesisadetta
33 heavy rain / voimakasta vesisadetta
41 light snow showers / heikkoja lumikuuroja
42 snow showers / lumikuuroja
43 heavy snow showers / voimakkaita lumikuuroja
51 light snow / heikkoa lumisadetta
52 snowfall / lumisadetta
53 heavy snow / voimakasta lumisadetta
61 thunderstorms / ukkoskuuroja
62 heavy thunderstorms / voimakkaita ukkoskuuroja
63 thunderstorms / ukkosta
64 heavy thunderstorms / voimakasta ukkosta
71 weak sleet / heikkoja räntäkuuroja
72 sleet / räntäkuuroja
73 heavy sleet / voimakkaita räntäkuuroja
81 light sleet / heikkoa räntäsadetta
82 showers / räntäsadetta
83 heavy sleet / voimakasta räntäsadetta
91 mist / utua
92 fog / sumuaClick to open/close
{
"place": "Jyvaskyla", // Location. Returns 400 if [Bad Request]
"measurements": {
"DewPoint": { // Measurement type
"label": "Dew point", // Description for the data
"symbol": "°C", // Symbol for the measurement. If doesn't have = ""
"values": [{ // Array[{time,value}]
"time": "2021-03-28T20:00:00Z", // Time for the forecast
"value": "-2.6" // Predicted value at the time
}, {
"time": "2021-03-28T21:00:00Z",
"value": "-2.85"
}
]
},
"GeopHeight": {...}, // Geopotential height ""
"HighCloudCover": {...}, // High cloud cover %
"Humidity": {...}, // Humidity %
"LandSeaMask": {...}, // Land-sea mask ""
"LowCloudCover": {...}, // LowCloudCover %
"MaximumWind": {...}, // Maximum wind speed m/s
"MediumCloudCover": {...}, // Medium cloud cover %
"Precipitation1h": {...}, // Precipitation amount 1 hour mm/h
"PrecipitationAmount": {...}, // Precipitation amount mm
"Pressure": {...}, // Air pressure hPa
"RadiationDiffuseAccumulation": {...}, // Diffuse short wave radiation accumulation at the surface J/m^2
"RadiationGlobalAccumulation": {...}, // Global radiation accumulation J/m^2
"RadiationLWAccumulation": {...}, // Long wave radiation accumulation J/m^2
"RadiationNetSurfaceLWAccumulation": {...}, // Net thermal radiation accumulation at the surface J/m^2
"RadiationNetSurfaceSWAccumulation": {...}, // Net short wave radiation accumulation at the surface J/m^2
"Temperature": {...}, // Air temperature °C
"TotalCloudCover": {...}, // Total cloud cover %
"WeatherSymbol3": {...}, // Weather ""
"WindDirection": {...}, // Wind deg
"WindGust": {...}, // Wind gust m/s
"WindSpeedMS": {...}, // Wind speed m/s
"WindUMS": {...}, // U-component of wind vector m/s
"WindVMS": {...} // V-component of wind m/s
}
}
}Click to open/close
<?xml version="1.0" encoding="UTF-8"?>
<wfs:FeatureCollection
timeStamp="2022-08-01T13:37:03Z"
numberMatched="24"
numberReturned="24"
xmlns:wfs="http://www.opengis.net/wfs/2.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:om="http://www.opengis.net/om/2.0"
xmlns:omso="http://inspire.ec.europa.eu/schemas/omso/3.0"
xmlns:ompr="http://inspire.ec.europa.eu/schemas/ompr/3.0"
xmlns:gml="http://www.opengis.net/gml/3.2"
xmlns:gmd="http://www.isotc211.org/2005/gmd"
xmlns:gco="http://www.isotc211.org/2005/gco"
xmlns:swe="http://www.opengis.net/swe/2.0"
xmlns:gmlcov="http://www.opengis.net/gmlcov/1.0"
xmlns:sam="http://www.opengis.net/sampling/2.0"
xmlns:sams="http://www.opengis.net/samplingSpatial/2.0"
xmlns:wml2="http://www.opengis.net/waterml/2.0"
xmlns:target="http://xml.fmi.fi/namespace/om/atmosphericfeatures/1.1"
xsi:schemaLocation="http://www.opengis.net/wfs/2.0 http://schemas.opengis.net/wfs/2.0/wfs.xsd
http://www.opengis.net/gmlcov/1.0 http://schemas.opengis.net/gmlcov/1.0/gmlcovAll.xsd
http://www.opengis.net/sampling/2.0 http://schemas.opengis.net/sampling/2.0/samplingFeature.xsd
http://www.opengis.net/samplingSpatial/2.0 http://schemas.opengis.net/samplingSpatial/2.0/spatialSamplingFeature.xsd
http://www.opengis.net/swe/2.0 http://schemas.opengis.net/sweCommon/2.0/swe.xsd
http://inspire.ec.europa.eu/schemas/omso/3.0 https://inspire.ec.europa.eu/schemas/omso/3.0/SpecialisedObservations.xsd
http://inspire.ec.europa.eu/schemas/ompr/3.0 https://inspire.ec.europa.eu/schemas/ompr/3.0/Processes.xsd
http://www.opengis.net/waterml/2.0 http://schemas.opengis.net/waterml/2.0/waterml2.xsd
http://xml.fmi.fi/namespace/om/atmosphericfeatures/1.1 https://xml.fmi.fi/schema/om/atmosphericfeatures/1.1/atmosphericfeatures.xsd">
<wfs:member>
<omso:PointTimeSeriesObservation gml:id="WFS-qW_<long-string>--Temperature">
<om:phenomenonTime xlink:href="#time-interval-1-1"/>
<om:resultTime xlink:href="#time-1-1"/>
<om:procedure xlink:href="http://xml.fmi.fi/inspire/process/hirlam"/>
<om:parameter>
<om:NamedValue>
<om:name xlink:href="https://inspire.ec.europa.eu/codeList/ProcessParameterValue/value/numericalModel/analysisTime"/>
<om:value>
<gml:TimeInstant gml:id="analysis-time-1-1-Temperature--">
<gml:timePosition>2022-08-01T06:00:00Z</gml:timePosition>
</gml:TimeInstant>
</om:value>
</om:NamedValue>
</om:parameter>
<om:observedProperty xlink:href="https://opendata.fmi.fi/meta?observableProperty=forecast&param=Temperature&language=eng"/>
<om:featureOfInterest>
<sams:SF_SpatialSamplingFeature gml:id="enn-s-1-1-Temperature">
<sam:sampledFeature>
<target:LocationCollection gml:id="sampled-target-1-1-Temperature">
<target:member>
<target:Location gml:id="forloc-geoid-634963-pos-Temperature">
<gml:identifier codeSpace="http://xml.fmi.fi/namespace/stationcode/geoid">634963</gml:identifier>
<gml:name codeSpace="http://xml.fmi.fi/namespace/locationcode/name">Tampere</gml:name>
<gml:name codeSpace="http://xml.fmi.fi/namespace/locationcode/geoid">634963</gml:name>
<target:representativePoint xlink:href="#point-634963-Temperature"/>
<target:country codeSpace="http://xml.fmi.fi/namespace/location/country">Finland</target:country>
<target:timezone>Europe/Helsinki</target:timezone>
<target:region codeSpace="http://xml.fmi.fi/namespace/location/region">Finland</target:region>
</target:Location></target:member>
</target:LocationCollection>
</sam:sampledFeature>
<sams:shape>
<gml:MultiPoint gml:id="foi-multipoint-1-1-Temperature">
<gml:pointMembers>
<gml:Point gml:id="point-634963-Temperature" srsName="http://www.opengis.net/def/crs/EPSG/0/4258" srsDimension="2">
<gml:name>Tampere</gml:name>
<gml:pos>61.49911 23.78712 </gml:pos>
</gml:Point>
</gml:pointMembers>
</gml:MultiPoint>
</sams:shape>
</sams:SF_SpatialSamplingFeature>
</om:featureOfInterest>
<om:result>
<wml2:MeasurementTimeseries gml:id="mts-1-1-Temperature">
<wml2:point>
<wml2:MeasurementTVP>
<wml2:time>2022-08-01T14:00:00Z</wml2:time>
<wml2:value>23.27</wml2:value>
</wml2:MeasurementTVP>
</wml2:point>
<wml2:point>
<wml2:MeasurementTVP>
<wml2:time>2022-08-01T15:00:00Z</wml2:time>
<wml2:value>21.39</wml2:value>
</wml2:MeasurementTVP>
</wml2:point>
<wml2:point>
<wml2:MeasurementTVP>
<wml2:time>2022-08-01T16:00:00Z</wml2:time>
<wml2:value>20.99</wml2:value>
</wml2:MeasurementTVP>
</wml2:point>
<wml2:point>
<wml2:MeasurementTVP>
<wml2:time>2022-08-01T17:00:00Z</wml2:time>
<wml2:value>19.99</wml2:value>
</wml2:MeasurementTVP>
</wml2:point>
<wml2:point>
<wml2:MeasurementTVP>
<wml2:time>2022-08-01T18:00:00Z</wml2:time>
<wml2:value>18.36</wml2:value>
</wml2:MeasurementTVP>
</wml2:point>
<wml2:point>
<wml2:MeasurementTVP>
<wml2:time>2022-08-01T19:00:00Z</wml2:time>
<wml2:value>17.56</wml2:value>
</wml2:MeasurementTVP>
</wml2:point>
<wml2:point>
<wml2:MeasurementTVP>
<wml2:time>2022-08-01T20:00:00Z</wml2:time>
<wml2:value>17.02</wml2:value>
</wml2:MeasurementTVP>
</wml2:point>
<wml2:point>
<wml2:MeasurementTVP>
<wml2:time>2022-08-01T21:00:00Z</wml2:time>
<wml2:value>15.99</wml2:value>
</wml2:MeasurementTVP>
</wml2:point>
<wml2:point>
<wml2:MeasurementTVP>
<wml2:time>2022-08-01T22:00:00Z</wml2:time>
<wml2:value>15.67</wml2:value>
</wml2:MeasurementTVP>
</wml2:point>
<wml2:point>
<wml2:MeasurementTVP>
<wml2:time>2022-08-01T23:00:00Z</wml2:time>
<wml2:value>15.02</wml2:value>
</wml2:MeasurementTVP>
</wml2:point>
<wml2:point>
<wml2:MeasurementTVP>
<wml2:time>2022-08-02T00:00:00Z</wml2:time>
<wml2:value>14.44</wml2:value>
</wml2:MeasurementTVP>
</wml2:point>
</wml2:MeasurementTimeseries>
</om:result>
</omso:PointTimeSeriesObservation>
</wfs:member>
</wfs:FeatureCollection>Click to open/close
{
"place": "Helsinki",
"measurements": {
"Temperature": {
"label": "Air temperature",
"symbol": "°C",
"values": [
{
"time": "2022-08-01T14:00:00Z",
"value": "23.27"
},
{
"time": "2022-08-01T15:00:00Z",
"value": "21.39"
},
{
"time": "2022-08-01T16:00:00Z",
"value": "20.99"
},
{
"time": "2022-08-01T17:00:00Z",
"value": "19.99"
},
{
"time": "2022-08-01T18:00:00Z",
"value": "18.36"
},
{
"time": "2022-08-01T19:00:00Z",
"value": "17.56"
},
{
"time": "2022-08-01T20:00:00Z",
"value": "17.02"
},
{
"time": "2022-08-01T21:00:00Z",
"value": "15.99"
},
{
"time": "2022-08-01T22:00:00Z",
"value": "15.67"
},
{
"time": "2022-08-01T23:00:00Z",
"value": "15.02"
},
{
"time": "2022-08-02T00:00:00Z",
"value": "14.44"
}
}
}
}- Open Data License - Finnish Meteorological Institute:
- English: https://en.ilmatieteenlaitos.fi/open-data-licence
- Finnish: https://www.ilmatieteenlaitos.fi/avoin-data-lisenssi
- Creative Commons page: https://creativecommons.org/licenses/by/4.0/deed.fi
Data is protected with Creative Commons Attribution 4.0 International license.
- Show fetched and cleaned data on the api
- Change from HIRLAM model to more accurate HARMONIE (MEPS)
- API for fetching current weather