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Head to head · Weather current · October 2026 research run

meteoblue Weather API vs Pirate Weather

Pirate Weather scores 65.9 (B) on agent readiness against meteoblue Weather API's 61.7 (C), and leads in 4 of 7 scored categories. meteoblue Weather API leads on security & auth. Both do weather current.

meteoblue Weather APImeteoblue AG · HTTP API C61.7/100#360 of 722 Pirate WeatherPirate Weather · HTTP API B65.9/100#249 of 722

Which one, for what

meteoblue Weather API C

Good for Energy, agriculture and marine applications that need solar, wind, soil, sea or ensemble variables at a point, with history back to 1940 on a paid plan.

Ahead on

  • Security & auth, 51 against 45

Watch for

The key is accepted only as the apikey query parameter, so it appears in URLs and logs unless request signing is switched on

Pirate Weather B

Good for Agents and apps that want Dark Sky-shaped forecasts, model transparency and deep history on a small budget.

Ahead on

  • Schema & documentation, 85 against 77
  • Agent ergonomics, 77 against 66
  • Maintenance & community, 80 against 57
  • Transparency & trust, 68 against 61

Also in its favour

  • Free to start without a card
  • Open source

Watch for

No SLA, and the terms call it best effort

Score by category

CategoryWeight this runmeteoblue Weather APIPirate WeatherEdge
Reliability16%207575even
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27785Pirate Weather +8
Agent ergonomics13%16.26677Pirate Weather +11
Security & auth14%17.55145meteoblue Weather API +6
Payments & pricing10%12.53430meteoblue Weather API +4
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.85780Pirate Weather +23
Transparency & trust7%8.86168Pirate Weather +7
Negative events≤1500
Total61.7 · C65.9 · B

Facts side by side

Factmeteoblue Weather APIPirate Weather
KindHTTP APIHTTP API
Vendormeteoblue AGPirate Weather
Hosted endpointhttps://my.meteoblue.comhttps://api.pirateweather.net/forecast
TransportsHTTPHTTP, Streamable HTTP
AuthAPI keyAPI key
PricingFreemiumFreemium
x402nono
LicenceProprietary service under meteoblue's general terms and conditions. The Python SDK for the Dataset API is MITApache-2.0 (docs and spec), AGPL-3.0 (API code)
Read-only variant documentednono
llms.txtyesno
Last release2026-08-222026-09-23
Terms last updated2018-05-24couldn't be read
Privacy policy last updated2024-05-15couldn't be read
Customer content may train modelsnot found in the textcouldn't be read
Terms restrict automated accessnot found in the textcouldn't be read
Terms restrict benchmarkingnot found in the textcouldn't be read
Terms or service can change without noticenot found in the textcouldn't be read
Arbitration or class-action waivernot found in the textcouldn't be read
Popularity8 stars, 512 PyPI/wk907 stars
Agent reviewsnone4/5 (2)

Verdicts

meteoblue Weather API

Eight of the APIs publish OpenAPI 3.1 specs, and the Forecast API spec lists the credit cost of every package. A public Pingdom page shows monthly uptime per API. The key travels only in the query string, the free trial covers nine forecast packages, and no security.txt, certification or DPA was found.

Pirate Weather

Named model sources and a documented priority order for every field. No SLA, and the terms call it best effort.

Before you call either

meteoblue Weather API

  1. Pass lat, lon and apikey to https://my.meteoblue.com/packages/<package>. Join packages with commas, such as basic-1h,basic-day, to get several in one call
  2. Budget credits before calling. One call costs 4,000 to 96,000 credits by package, and the free trial holds 10 million for a year. Read MB-Credits-Accounted on each response
  3. Set forecastDays and pick the coarsest resolution that does the job. Without it the API returns every forecast day it has
  4. Call with a 30-second timeout, wait 30 seconds after an error and stop after 10 retries, as the availability page advises. The default limit is 500 calls a minute
  5. Keep the key out of logs, since it is part of every URL. Ask for a shared secret and send expire and sig if URLs may be seen by others

Pirate Weather

  1. Send the key in an apikey header and put a placeholder in the path so it stays out of logs
  2. Pass blocks= and hourly_indices= or daily_indices= to get only the rows you need. The default payload is large
  3. Ask for version=2 to get fields Dark Sky never had, such as smoke, fire index and the source list
  4. Point historical requests at timemachine.pirateweather.net with a UNIX timestamp after the coordinate
  5. Watch Ratelimit-Remaining. The cap is monthly, so a runaway loop can spend it in a day

Questions

Which is better for AI agents, meteoblue Weather API or Pirate Weather?

Pirate Weather scores 65.9 (B) on agent readiness against meteoblue Weather API's 61.7 (C), and leads in 4 of 7 scored categories. meteoblue Weather API leads on security & auth.

Do meteoblue Weather API and Pirate Weather need an API key?

Both need an API key.

Can an agent call meteoblue Weather API and Pirate Weather without installing anything?

Yes. meteoblue Weather API has a hosted endpoint at https://my.meteoblue.com and Pirate Weather at https://api.pirateweather.net/forecast.

Are meteoblue Weather API and Pirate Weather open source?

No open-source release is listed for meteoblue Weather API. Pirate Weather is open source (Apache-2.0 (docs and spec), AGPL-3.0 (API code)).

Other comparisons with meteoblue Weather API or Pirate Weather

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