World Meteorological Organization
type: DataCatalog
description: The World Meteorological Organization (WMO) is a specialized agency of the United Nations that coordinates global meteorological, climatological, hydrological, and related geophysical sciences.
publisher: World Meteorological Organization
dataset: World Weather Information Service API
dataset: OSCAR/Surface REST API
dataset: WIS2 Global Discovery Catalogue API
dataset: WIS2 Global Broker (MQTT)
dataset: WHOS Hydrological Observing System API

World Weather Information Service API
type: WebAPI
description: The WMO World Weather Information Service (WWIS) provides public JSON endpoints delivering official city weather forecasts and climatological data contributed by WMO member national meteorological and hydrological services.
keywords: Weather
keywords: Forecasts
keywords: Climate
provider: World Meteorological Organization

OSCAR/Surface REST API
type: WebAPI
description: The OSCAR/Surface REST API provides programmatic access to the WMO Observing Systems Capability Analysis and Review tool for surface-based stations.
keywords: Observations
keywords: Weather Stations
keywords: WIGOS
keywords: Metadata
provider: World Meteorological Organization

WIS2 Global Discovery Catalogue API
type: WebAPI
description: The WIS2 Global Discovery Catalogue (GDC) implements the OGC API - Records standard to provide discovery metadata for datasets published across the WMO Information System 2.0 network.
documentation: https://wis2-gdc.weather.gc.ca/collections/wis2-discovery-metadata/items
keywords: WIS2
keywords: Discovery
keywords: Metadata
keywords: OGC
keywords: Catalogue
provider: Meteorological Service of Canada
conforms to: https://ogcapi.ogc.org/records/

WIS2 Global Broker (MQTT)
type: WebAPI
description: The WIS2 Global Broker provides an MQTT(S) publish-subscribe service that re-publishes real-time weather notification messages from all WIS2 Nodes worldwide.
keywords: WIS2
keywords: Real-time
keywords: MQTT
keywords: Pub/Sub
keywords: Notifications
provider: World Meteorological Organization

WHOS Hydrological Observing System API
type: WebAPI
description: The WMO Hydrological Observing System (WHOS) provides multiple API interfaces for accessing global hydrological station data and time series.
keywords: Hydrology
keywords: Water
keywords: Observations
keywords: Time Series
provider: World Meteorological Organization