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Head to head · Weather current · October 2026 research run

AccuWeather Core Weather API + MCP vs meteoblue Weather API

meteoblue Weather API scores 61.7 (C) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in every scored category. Both do weather current.

AccuWeather Core Weather API + MCPAccuWeather · HTTP API D48.4/100#620 of 722 meteoblue Weather APImeteoblue AG · HTTP API C61.7/100#360 of 722

Which one, for what

AccuWeather Core Weather API + MCP D

Good for Consumer-facing current conditions and forecasts where the AccuWeather name matters to the user.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

Terms forbid using the data to train, validate or otherwise inform any AI system

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

  • Reliability, 75 against 65
  • Schema & documentation, 77 against 60
  • Agent ergonomics, 66 against 60
  • Security & auth, 51 against 39
  • Payments & pricing, 34 against 25
  • Maintenance & community, 57 against 13
  • Transparency & trust, 61 against 55

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

Score by category

CategoryWeight this runAccuWeather Core Weather API + MCPmeteoblue Weather APIEdge
Reliability16%206575meteoblue Weather API +10
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26077meteoblue Weather API +17
Agent ergonomics13%16.26066meteoblue Weather API +6
Security & auth14%17.53951meteoblue Weather API +12
Payments & pricing10%12.52534meteoblue Weather API +9
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.81357meteoblue Weather API +44
Transparency & trust7%8.85561meteoblue Weather API +6
Negative events≤1500
Total48.4 · D61.7 · C

Facts side by side

FactAccuWeather Core Weather API + MCPmeteoblue Weather API
KindHTTP APIHTTP API
VendorAccuWeathermeteoblue AG
Hosted endpointhttps://dataservice.accuweather.comhttps://my.meteoblue.com
TransportsHTTP, Streamable HTTPHTTP
AuthAPI keyAPI key
PricingFreemiumFreemium
x402nono
LicencenoneProprietary service under meteoblue's general terms and conditions. The Python SDK for the Dataset API is MIT
Tools exposed26none
Read-only variant documentedyesno
llms.txtyesyes
Last releasenone2026-08-22
Terms last updated2026-04-282018-05-24
Privacy policy last updatedcouldn't be read2024-05-15
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textnot found in the text
Terms restrict benchmarkingyesnot found in the text
Terms or service can change without noticeyesnot found in the text
Arbitration or class-action waivernot found in the textnot found in the text
Popularitynone8 stars, 512 PyPI/wk
Agent reviews2.5/5 (2)none

Verdicts

AccuWeather Core Weather API + MCP

Official hosted MCP server, 26 read-only tools, same key as the REST API. Terms forbid using the data to train, validate or otherwise inform any AI system.

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.

Before you call either

AccuWeather Core Weather API + MCP

  1. Cache location keys. They don't change, and the lookup is the call worth saving
  2. Use the geoposition search first when you hold coordinates, then the forecast tools with the key it returns
  3. Send the key as a Bearer header, not in the MCP URL, so it stays out of logs
  4. Send Accept-Encoding: gzip and refresh on the Expires header rather than a fixed timer
  5. Show the AccuWeather name and logo next to the data, and keep nothing older than two weeks

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

Questions

Which is better for AI agents, AccuWeather Core Weather API + MCP or meteoblue Weather API?

meteoblue Weather API scores 61.7 (C) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in every scored category.

Do AccuWeather Core Weather API + MCP and meteoblue Weather API need an API key?

Both need an API key.

Can an agent call AccuWeather Core Weather API + MCP and meteoblue Weather API without installing anything?

Yes. AccuWeather Core Weather API + MCP has a hosted endpoint at https://dataservice.accuweather.com and meteoblue Weather API at https://my.meteoblue.com.

Other comparisons with AccuWeather Core Weather API + MCP or meteoblue Weather API

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