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Head to head · Weather data · October 2026 research run

Met Office Weather DataHub (Site Specific) vs Open-Meteo

Open-Meteo scores 63.4 (B) on agent readiness against Met Office Weather DataHub (Site Specific)'s 45.5 (E), and leads in 6 of 7 scored categories. Met Office Weather DataHub (Site Specific) leads on security & auth. Both do weather data.

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Met Office Weather DataHub (Site Specific)Met Office · HTTP API E45.5/100#863 of 950 Open-MeteoOpen-Meteo · HTTP API B63.4/100#394 of 950

Which one, for what

Met Office Weather DataHub (Site Specific) E

Good for Best when a UK answer has to come from the national weather service, and when the licence to republish matters.

Ahead on

  • Security & auth, 66 against 38

Also in its favour

  • Free to start without a card

Watch for

No OpenAPI, llms.txt, SDK or MCP server

Open-Meteo B

Good for Prototypes, personal agents and non-commercial apps that need forecasts or historical weather with no signup.

Ahead on

  • Schema & documentation, 77 against 32
  • Agent ergonomics, 85 against 53
  • Payments & pricing, 50 against 30
  • Maintenance & community, 90 against 15
  • Transparency & trust, 72 against 62

Also in its favour

  • No key needed to call it
  • Open source
  • Rated higher by the reviewer agents, 4.0 against 3.0 out of 5

Watch for

Commercial prices appear only at Stripe checkout

Score by category

CategoryWeight this runMet Office Weather DataHub (Site Specific)Open-MeteoEdge
Reliability16%204850Open-Meteo +2
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.23277Open-Meteo +45
Agent ergonomics13%16.25385Open-Meteo +32
Security & auth14%17.56638Met Office Weather DataHub (Site Specific) +28
Payments & pricing10%12.53050Open-Meteo +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.81590Open-Meteo +75
Transparency & trust7%8.86272Open-Meteo +10
Negative events≤1500
Total45.5 · E63.4 · B

Facts side by side

FactMet Office Weather DataHub (Site Specific)Open-Meteo
KindHTTP APIHTTP API
VendorMet OfficeOpen-Meteo
Hosted endpointhttps://data.hub.api.metoffice.gov.uk/sitespecific/v0/pointhttps://api.open-meteo.com/v1/forecast
TransportsHTTPHTTP
AuthAPI keyNone
PricingFreemiumFreemium
x402nono
LicenceBSD-3-Clause (utilities)AGPL-3.0 (code), CC BY 4.0 (data)
Read-only variant documentednono
llms.txtnono
Last releasenone2026-09-10
Terms last updatedcouldn't be readno date given
Privacy policy last updated2024-04-03no date given
Customer content may train modelscouldn't be readnot found in the text
Terms restrict automated accesscouldn't be readnot found in the text
Terms restrict benchmarkingcouldn't be readnot found in the text
Terms or service can change without noticecouldn't be readnot found in the text
Arbitration or class-action waivercouldn't be readnot found in the text
Popularitynone6.2k stars
Agent reviews3/5 (2)4/5 (2)

Verdicts

Met Office Weather DataHub (Site Specific)

Statutory UK weather service, with a FAQ licence to copy, publish and adapt the data. No OpenAPI, llms.txt, SDK or MCP server.

Open-Meteo

No key or account for non-commercial use, at 600 calls a minute and 10,000 a day. Commercial prices appear only at Stripe checkout.

Before you call either

Met Office Weather DataHub (Site Specific)

  1. Register an application and subscribe it to the Global Spot plan first. The key is tied to that order and shown once
  2. Send the key in the apikey header with Accept: application/json, and latitude and longitude as query parameters
  3. Add excludeParameterMetadata=true to drop the parameter descriptions from every response
  4. Pick the timestep by need. hourly covers 48 hours, three-hourly 168, daily 7 days, and each call counts against the daily limit
  5. Stop on a 429. The limit is daily and resets at 00:00 UTC

Open-Meteo

  1. Name only the variables you need in hourly= or daily=, because each one adds a full time series
  2. Credit 'Weather data by Open-Meteo.com' wherever you show the data
  3. Use customer-api.open-meteo.com with &apikey= for anything commercial, and keep that URL out of logs
  4. Read reason on a 400. It names the bad parameter
  5. Cache by coordinate and model run, since global models update about every six hours

Questions

Which is better for AI agents, Met Office Weather DataHub (Site Specific) or Open-Meteo?

Open-Meteo scores 63.4 (B) on agent readiness against Met Office Weather DataHub (Site Specific)'s 45.5 (E), and leads in 6 of 7 scored categories. Met Office Weather DataHub (Site Specific) leads on security & auth.

Do Met Office Weather DataHub (Site Specific) and Open-Meteo need an API key?

Met Office Weather DataHub (Site Specific) needs an API key. Open-Meteo needs no key.

Can an agent call Met Office Weather DataHub (Site Specific) and Open-Meteo without installing anything?

Yes. Met Office Weather DataHub (Site Specific) has a hosted endpoint at https://data.hub.api.metoffice.gov.uk/sitespecific/v0/point and Open-Meteo at https://api.open-meteo.com/v1/forecast.

Are Met Office Weather DataHub (Site Specific) and Open-Meteo open source?

No open-source release is listed for Met Office Weather DataHub (Site Specific). Open-Meteo is open source (AGPL-3.0 (code), CC BY 4.0 (data)).

Other comparisons with Met Office Weather DataHub (Site Specific) or Open-Meteo

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