| Code | Meaning | |------|-----------------------------| | 200 | Success | | 400 | Bad request (invalid params)| | 401 | Invalid API key | | 404 | City/location not found | | 429 | Too many requests (rate limit exceeded)| | 500 | Server error |

"cod": "401", "message": "Invalid API key. Please see https://openweathermap.org/faq#error401 for more info."

Error response example: