# meteoblue Weather API vs Meteomatics Weather API

> meteoblue Weather API scores 61.7 (C) on agent readiness against Meteomatics Weather API's 49.6 (D), and leads in 5 of 7 scored categories. Meteomatics Weather API leads on agent ergonomics. Both do weather current. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/meteoblue-vs-meteomatics
- Markdown: https://www.anchorterminal.com/compare/meteoblue-vs-meteomatics.md (~2,850 tokens)
- Slim: https://www.anchorterminal.com/compare/meteoblue-vs-meteomatics.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
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- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

meteoblue Weather API scores 61.7 (C) on agent readiness against Meteomatics Weather API's 49.6 (D), and leads in 5 of 7 scored categories. Meteomatics Weather API leads on agent ergonomics. Both do weather current.

- meteoblue Weather API: grade C, 61.7/100, rank #360 of 722. Markdown https://www.anchorterminal.com/tools/meteoblue.md · JSON https://www.anchorterminal.com/api/v1/tools/meteoblue.json
- Meteomatics Weather API: grade D, 49.6/100, rank #606 of 722. Markdown https://www.anchorterminal.com/tools/meteomatics.md · JSON https://www.anchorterminal.com/api/v1/tools/meteomatics.json

## 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:
- Reliability, 75 against 34
- Schema & documentation, 77 against 71
- Payments & pricing, 34 against 0
- Maintenance & community, 57 against 42

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

### Meteomatics Weather API (D)

Good for: Companies in energy, aviation, insurance and logistics that need many models, long history, polygon and route queries and an SLA, and will buy by contract.

Ahead on:
- Agent ergonomics, 80 against 66

Watch for: No public price, free tier or self-serve signup found. Credentials arrive by email after a sales conversation


## Score by category

| Category | Weight | meteoblue Weather API | Meteomatics Weather API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 75 | 34 | meteoblue Weather API +41 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 77 | 71 | meteoblue Weather API +6 |
| Agent ergonomics | 13% (16.2 this run) | 66 | 80 | Meteomatics Weather API +14 |
| Security & auth | 14% (17.5 this run) | 51 | 54 | Meteomatics Weather API +3 |
| Payments & pricing | 10% (12.5 this run) | 34 | 0 | meteoblue Weather API +34 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 57 | 42 | meteoblue Weather API +15 |
| Transparency & trust | 7% (8.8 this run) | 61 | 59 | meteoblue Weather API +2 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **61.7 · C** | **49.6 · D** | |

## Facts side by side

| Fact | meteoblue Weather API | Meteomatics Weather API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | meteoblue AG | Meteomatics AG |
| Hosted endpoint | `https://my.meteoblue.com` | `https://api.meteomatics.com` |
| Transports | HTTP | HTTP |
| Auth | API key | OAuth or key |
| Pricing | Freemium | Paid |
| x402 | no | no |
| Licence | Proprietary service under meteoblue's general terms and conditions. The Python SDK for the Dataset API is MIT | Proprietary service under Meteomatics' general terms and conditions. The Python connector on GitHub is MIT |
| Tools exposed | none | 9 |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-08-22 | 2026-08-24 |
| Terms last updated | 2018-05-24 | no date given |
| Privacy policy last updated | 2024-05-15 | no date given |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 8 stars, 512 PyPI/wk | 56 stars, 16k PyPI/wk |

## 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.

**Meteomatics Weather API.** A public OpenAPI file, a hosted MCP server whose nine tools are all marked read-only, a published SLA with compensation and ISO 27001 certification suit company use. Access needs a sales contract, with no public price, free tier or self-serve signup found, no status page, and REST calls that authenticate with a username and password.

## 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

### Meteomatics Weather API

1. Ask the account owner for credentials first. There is no signup, and both the REST API and the MCP server need a Meteomatics account with API access
2. Build REST URLs as validdatetime/parameters/location/format, for example `2026-10-08T00:00:00Z/t_2m:C/52.52,13.40/json`. Parameter names carry their unit after a colon
3. Keep each query to 10 locations and 10 parameters unless the contract says otherwise, and use POST when a GET URL passes 2,000 characters
4. Send credentials or the token in the `Authorization` header. Avoid the documented `access_token` query parameter, which puts the token in URLs and logs
5. Read `/user_stats_json` before a large job. It reports queries sent and the contract's limits, and 429 means a limit is spent
6. Treat reserved values such as -888 and -999 as invalid or missing data, and shrink the request when a 408 arrives after the 300-second timeout

## Questions

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

meteoblue Weather API scores 61.7 (C) on agent readiness against Meteomatics Weather API's 49.6 (D), and leads in 5 of 7 scored categories. Meteomatics Weather API leads on agent ergonomics.

### Do meteoblue Weather API and Meteomatics Weather API need an API key?

meteoblue Weather API needs an API key. Meteomatics Weather API takes an API key or an OAuth sign-in.

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

Yes. meteoblue Weather API has a hosted endpoint at https://my.meteoblue.com and Meteomatics Weather API at https://api.meteomatics.com.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/meteoblue-vs-meteomatics.json, and with the fewest tokens: https://www.anchorterminal.com/compare/meteoblue-vs-meteomatics.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "meteoblue", "b": "meteomatics"}`. From a terminal: `anchor compare meteoblue meteomatics`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/meteoblue.json and https://www.anchorterminal.com/api/v1/tools/meteomatics.json

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