API DIRECTORY · DATA, PLACES AND DEVICES

Weather, Environment & Public Data

39 companies and tools in this category. Each listing links to the provider’s own website. Search the full directory

AirNowHosted API
Air quality
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
arXivAccess needs review
Listed in the supplied document; current public API availability is not confirmed
Open documentation Pricing — No pricing page listedStatus Details
Official source checked · API access unverified · checked 2026-10-23Current public API access is unconfirmed; check the provider’s access options.
BLSHosted API
Labor statistics
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
Companies HouseHosted API
Look up UK company profiles and public filing records for business-research applications.
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official documentation checked · checked 2026-10-25Each API request requires an API key, sent using HTTP Basic authentication.
Congress.govAccess needs review
Listed in the supplied document; current public API availability is not confirmed
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · API access unverified · checked 2026-10-23Current public API access is unconfirmed; check the provider’s access options.
CrossrefHosted API
Scholarly publication metadata
Open documentation Pricing — No pricing page listedStatus Details
Official source checked · checked 2026-10-23
Data.govHosted API
Government data discovery
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
DataCiteHosted API
Research metadata and identifiers
Open documentation Pricing — No pricing page listedStatus Details
Official documentation checked · checked 2026-10-23
EurostatHosted API
European statistical data
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official documentation checked · checked 2026-10-23
GBIFHosted API
Search biodiversity occurrences, species and datasets for conservation and environmental research tools.
Open documentation Pricing — No pricing page listedStatus Details
Official documentation checked · checked 2026-10-25Most read APIs are public; writes, downloads and some other requests require a GBIF account with HTTP Basic authentication.
GeoNamesHosted API
Add place-name search, postal-code lookup, timezones and geographic reference data to apps.
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official documentation checked · checked 2026-10-25Every request requires a registered GeoNames username; service credits and geographic coverage limits apply.
GovInfoHosted API
Legislation
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
IMFHosted API
Global economic data
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
iNaturalistHosted API
Search community wildlife observations and taxa for biodiversity and citizen-science applications.
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official documentation checked · checked 2026-10-25Public observation reads are available; writes and private data require a JWT obtained through OAuth authorization.
Internet ArchiveHosted API
Open Library book metadata
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
IQAirHosted API
Air quality
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
MeteomaticsHosted API
Weather data
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official documentation checked · checked 2026-10-23
NASAAccess needs review
Listed in the supplied document; current public API availability is not confirmed
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · API access unverified · checked 2026-10-23Current public API access is unconfirmed; check the provider’s access options.
National Weather Service APIHosted API
US weather (free)
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
NOAAHosted API
U.S. weather information
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
Open Food FactsHosted API
Look up packaged foods by barcode and build product, ingredient and nutrition-information tools.
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official documentation checked · checked 2026-10-25Read operations require a custom User-Agent; product edits and image uploads require an authenticated account.
Open-MeteoHosted API
Weather forecasts
Open documentation Pricing — No pricing page listedStatus Details
Official documentation checked · checked 2026-10-23
OpenAlexHosted API
Research publication metadata
Open documentation Pricing — No pricing page listedStatus Details
Official source checked · checked 2026-10-23
OpenAQHosted API
Build air-quality dashboards and location-based tools from global sensor measurements.
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official documentation checked · checked 2026-10-25An OpenAQ API key is required in the X-API-Key header.
OpenSanctionsHosted API
Screen entities against sanctions datasets and retrieve matched company or person records.
Set up API access Docs Pricing — No pricing page listedStatus Details
Official documentation checked · checked 2026-10-25Hosted API requests require an API key; commercial access and public-interest API-key arrangements are documented.
OpenWeatherHosted API
Weather information
Get an API key Docs Pricing Status — No status page listedDetails
Official source checked · checked 2026-10-23
ORCIDHosted API
Researcher identifiers
Open documentation Pricing — No pricing page listedStatus Details
Official documentation checked · checked 2026-10-23
SEC EDGARHosted API
Company filings
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
Tomorrow.ioHosted API
Weather intelligence
Open documentation Pricing — No pricing page listedStatus Details
Official source checked · checked 2026-10-23
U.S. Census BureauHosted API
U.S. demographic data
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
USGSHosted API
Earthquakes, water, maps
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
Visual CrossingHosted API
Weather datasets
Open documentation Pricing — No pricing page listedStatus Details
Official source checked · checked 2026-10-23
Wayback MachineHosted API
Archived web
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
WeatherAPI.comHosted API
Weather data services
Set up API access Docs Pricing Status Details
Official source checked · checked 2026-10-23
WeatherbitHosted API
Weather information
Open documentation Pricing Status Details
Official documentation checked · checked 2026-10-23
WikidataHosted API
Encyclopedic data
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
WikimediaHosted API
Wiki data integrations
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
World BankHosted API
Global development indicators
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official source checked · checked 2026-10-23
ZenodoHosted API
Research data repository
Open documentation Pricing — No pricing page listedStatus — No status page listedDetails
Official documentation checked · checked 2026-10-23