Luchtmeetnet · Rijksinstituut voor Volksgezondheid en Milieu

Dutch source

Luchtmeetnet air quality network

Measurements of nitrogen dioxide, particulate matter and ozone, every hour, from about a hundred stations across the Netherlands.

Climate and environmentOpenAPIReal timeNetherlands · monitoring station

Up to date · updated 1 hours ago · checked 17:05

Nitrogen dioxide moves almost in step in park and street

NO₂ per hour in µg/m³ at two Amsterdam stations, 8 to 15 October 2026. Average 18 in Vondelpark and 19 on Van Diemenstraat.

Source: Luchtmeetnet open API, stations NL49017 en NL49012 · voorlopige uurwaarden

What can you do with it?3 ideas

Getting started

Show the rush hour

Average NO₂ per hour of day over a month. On a busy street you see two humps: morning and evening rush.

Getting started

New Year in the air

Particulate matter (PM10, PM2.5) spikes around midnight on 1 January because of fireworks.

Advanced

Test against WHO guidelines

Calculate daily means and count how often a station exceeds the WHO guideline.

How to process it4 steps

Find a station
Fetch the station list and check which pollutants each one measures.
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https://api.luchtmeetnet.nl/open_api/stations?page=1
```
Fetch measurements, a week at a time
Start and end can be at most a week apart. Loop through the pages.
Mind the time zone
Times are in UTC. Convert to Dutch time for rush-hour analysis.
Use final figures later
For annual reports: wait for RIVM's validated annual figures.

Interesting combinations

datum en uur

What does wind do to air quality?

Join per hour and compare still hours with windy ones.

Combine with KNMI daily weather data

tijdstip + locatie

How much comes from traffic?

Find a road sensor near a street station and compare traffic and NO₂ per hour.

Combine with NDW live traffic data

Similar sources

Large-scale concentration maps (GCN)
Modelled annual mean for every kilometre, not hourly measurements.
EEA air quality
The same stations, next to all of Europe's.
SM
Samen Meten (RIVM) not in the index yet
Low-cost citizen sensors: many more places, less accurate.

What to watch out for

Hourly values are provisional
Hourly values are not yet validated. Final figures come later in the year.
A station measures one spot
A few hundred metres away it can be very different. For an average at your own address, use the RIVM GCN map.
Not every station measures everything
Check which pollutants a station measures first, or you'll get an empty list.
At most one week per request
Fetch longer periods in chunks; responses are paginated.

How to fetch it

curl "https://api.luchtmeetnet.nl/open_api/measurements?station_number=NL49017&formula=NO2&start=2026-10-08T09:00:00Z&end=2026-10-15T09:00:00Z"

Used by

LuchtmeetnetMap of current air quality
Atlas LeefomgevingAir quality alongside noise, greenery and water

Questions this source helps answer

How clean is the air on my street?3 sources