Documentation for /geojson/network.py

This service provides a GeoJSON representation of stations within a given network.

Changelog

• 2026-02-24: For IEM consistency, the generation_time root attribute was renamed generated_at.
• 2026-01-26: Added has_attribute parameter to allow a filtered result to those stations with that attribute set.
• 2024-11-25: Added network overload value of HAS_HML for sites with HML data.
• 2024-08-19: Initial documentation update

Example Usage

Provide Iowa DCP sites with hourly precipitation available.

https://mesonet.agron.iastate.edu/geojson/network.py?network=IA_DCP&has_attribute=HAS_PHOUR

Provide all sites with 1 minute ASOS data:

https://mesonet.agron.iastate.edu/geojson/network.py?network=ASOS1MIN

Provide all sites with TAF data:

https://mesonet.agron.iastate.edu/geojson/network.py?network=TAF

Provide sites that are online within ASOS class networks

https://mesonet.agron.iastate.edu/geojson/network.py?network=AZOS&only_online=1

CGI Arguments

The following table lists the CGI arguments that are accepted by this service. A HTTP GET request is required. Fields of type Multi-Params or CSV value can accept either a comma separated list or multiple parameter and value combinations. For example, ?foo=1&foo=2 is equivalent to ?foo=1,2.

Field	Type	Description
callback	string or null	Legacy JSON-P style callback. It is likely best to not depend on this usage. The IEM website has a permissive CORS.
has_attribute	string	Station Attribute to filter on
network	string	IEM network identifier. Typically a combination of a US state abbreviation and a network classification, ie IA_ASOS.
only_online	boolean	Only include online stations