# Climate Data Online (CDO) API

**Canonical:** https://apis.io/apis/noaa/climate-data-online-cdo-api/  
**Provider:** NOAA — https://apis.io/providers/noaa/  
**Base URL:** https://www.ncdc.noaa.gov/cdo-web/api/v2  
**Documentation:** https://www.ncdc.noaa.gov/cdo-web/webservices/v2

Climate Data Online (CDO) API is one of 17 APIs that [NOAA](https://apis.io/providers/noaa/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Climate, Historical Data, Weather Records, and NCEI. The published artifact set on APIs.io includes API documentation.

The NOAA Climate Data Online Web Services API v2 provides RESTful access to the CDO database of historical weather and climate data maintained by the National Centers for Environmental Information (NCEI). Data types include daily summaries, normals, precipitation, temperatures, and storm events from thousands of global stations. Access requires a free token obtained by registering an email address with NCDC.

## Machine-readable artifacts (3)

- **Documentation** — https://www.ncdc.noaa.gov/cdo-web/webservices/v2
- **TokenRequest** — https://www.ncdc.noaa.gov/cdo-web/token
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/noaa/refs/heads/main/apis.yml

## Other NOAA APIs (12)

- [CO-OPS Tides and Currents API](https://apis.io/apis/noaa/co-ops-tides-and-currents-api/)
- [NOAA Alerts API](https://apis.io/apis/noaa/noaa-alerts-api/)
- [NOAA Aviation API](https://apis.io/apis/noaa/noaa-aviation-api/)
- [NOAA Glossary API](https://apis.io/apis/noaa/noaa-glossary-api/)
- [NOAA Gridpoints API](https://apis.io/apis/noaa/noaa-gridpoints-api/)
- [NOAA Icons API](https://apis.io/apis/noaa/noaa-icons-api/)
- [NOAA Navigational Data API](https://apis.io/apis/noaa/noaa-navigational-data-api/)
- [NOAA Offices API](https://apis.io/apis/noaa/noaa-offices-api/)
- [NOAA Points API](https://apis.io/apis/noaa/noaa-points-api/)
- [NOAA Products API](https://apis.io/apis/noaa/noaa-products-api/)
- [NOAA Radar API](https://apis.io/apis/noaa/noaa-radar-api/)
- [NOAA Radio API](https://apis.io/apis/noaa/noaa-radio-api/)

## Tags

Climate, Historical Data, Weather Records, NCEI

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/noaa/climate-data-online-cdo-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/noaa/.