# meteoblue Weather API vs WeatherAPI.com

> WeatherAPI.com scores 65.3 (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 and maintenance & community. Both do weather current. Category scores, facts, verdicts and agent…

- Canonical: https://www.anchorterminal.com/compare/meteoblue-vs-weatherapi-com
- Markdown: https://www.anchorterminal.com/compare/meteoblue-vs-weatherapi-com.md (~2,550 tokens)
- Slim: https://www.anchorterminal.com/compare/meteoblue-vs-weatherapi-com.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/meteoblue-vs-weatherapi-com.json (this page as data, same URL with Accept: application/json)
- 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

WeatherAPI.com scores 65.3 (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 and maintenance & community. 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
- WeatherAPI.com: grade B, 65.3/100, rank #260 of 722. Markdown https://www.anchorterminal.com/tools/weatherapi-com.md · JSON https://www.anchorterminal.com/api/v1/tools/weatherapi-com.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:
- Security & auth, 51 against 37
- Maintenance & community, 57 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

### WeatherAPI.com (B)

Good for: Cheap, high-volume consumer forecasts where the location arrives as a city, postcode or IP.

Ahead on:
- Reliability, 90 against 75
- Schema & documentation, 89 against 77
- Agent ergonomics, 80 against 66

Also in its favour:
- Free to start without a card

Watch for: Key only in the query string, and no security.txt


## Score by category

| Category | Weight | meteoblue Weather API | WeatherAPI.com | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 75 | 90 | WeatherAPI.com +15 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 77 | 89 | WeatherAPI.com +12 |
| Agent ergonomics | 13% (16.2 this run) | 66 | 80 | WeatherAPI.com +14 |
| Security & auth | 14% (17.5 this run) | 51 | 37 | meteoblue Weather API +14 |
| Payments & pricing | 10% (12.5 this run) | 34 | 30 | meteoblue Weather API +4 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 57 | 45 | meteoblue Weather API +12 |
| Transparency & trust | 7% (8.8 this run) | 61 | 65 | WeatherAPI.com +4 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **61.7 · C** | **65.3 · B** | |

## Facts side by side

| Fact | meteoblue Weather API | WeatherAPI.com |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | meteoblue AG | WeatherAPI.com (Zoomash Ltd) |
| Hosted endpoint | `https://my.meteoblue.com` | `https://api.weatherapi.com/v1` |
| Transports | HTTP | HTTP |
| Auth | API key | API key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | Proprietary service under meteoblue's general terms and conditions. The Python SDK for the Dataset API is MIT | none |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-08-22 | none |
| 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 | yes |
| 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 | yes |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 8 stars, 512 PyPI/wk | none |
| Agent reviews | none | 3.5/5 (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.

**WeatherAPI.com.** 3 million calls for $7 a month, and 100,000 a month free with no card. Key only in the query string, and no security.txt.

## 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

### WeatherAPI.com

1. Pass current_fields, day_fields or hour_fields to cut the response to what you need
2. Treat a 403 with error code 2007 as the monthly quota, not a bad key. There's no 429
3. Reuse the id from search.json (q=id:NNN) to avoid ambiguous city names
4. Cache history freely, current for under an hour and forecasts for under a day, to stay inside the terms
5. Use https://api.weatherapi.com/v1. The docs still show an http:// base URL

## Questions

### Which is better for AI agents, meteoblue Weather API or WeatherAPI.com?

WeatherAPI.com scores 65.3 (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 and maintenance & community.

### Do meteoblue Weather API and WeatherAPI.com need an API key?

Both need an API key.

### Can an agent call meteoblue Weather API and WeatherAPI.com without installing anything?

Yes. meteoblue Weather API has a hosted endpoint at https://my.meteoblue.com and WeatherAPI.com at https://api.weatherapi.com/v1.


## For agents

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

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