API archive entry · source-reported
IPMA
Portuguese weather and climate data
Other Weather APIs
These records share a directory category and are ordered by similarity of reported access facts. They are a shortlist, not proof of drop-in compatibility.
AviationWeather
NOAA aviation weather forecasts and observations
No auth · HTTPS reported · CORS Unknown
Hong Kong Obervatory
Provide weather information, earthquake information, and climate data
No auth · HTTPS reported · CORS Unknown
RainViewer
Radar data collected from different websites across the Internet
No auth · HTTPS reported · CORS Unknown
Hail History
Radar-detected hail history for any US address from NOAA NEXRAD Level-III hail detections, by year
No auth · HTTPS reported · CORS Yes
Meltema
Multi-model weather: GFS, ECMWF AIFS/IFS and a 31-member GEFS ensemble, keyless point forecasts
No auth · HTTPS reported · CORS No
Open-Meteo
Global weather forecast API for non-commercial use
No auth · HTTPS reported · CORS Yes
How to compare them
Coverage
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Operating cost
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Integration risk
Test auth, errors, pagination, latency, versioning, and outage behavior.
Data rights
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Source reference
This page separates source-reported facts from questions that need live provider verification.