The ClimaCell integration allows you to obtain weather information from the ClimaCell API.

Obtain an API key

You can obtain a free API key by signing up with ClimaCell.

At this time, the integration only supports the v3 API. ClimaCell has stopped issuing API keys for the v3 API, so if you are just signing up, you will need to wait for the V4 update.

The integration will automatically set the refresh interval based on the number of ClimaCell integrations that are using the same API key for a given Home Assistant instance. The integration currently assumes you are using a free account so the max requests per day is 1000. If you want to use a paid account to increase the number of max requests and increase the update frequency, please open a Home Assistant issue for the integration.

Supported Forecast Types

Forecast Type Description
nowcast Up to the 1 minute predictions. Supports 300 minutes or a max of 30 forecasts depending on the chosen timestep
hourly Hourly forecasts for the next 24 hours
daily Daily forecasts for the next 14 days


Adding ClimaCell to your Home Assistant instance can be done via the user interface, by taking the following steps:

  • Browse to your Home Assistant instance.

  • In the sidebar click on Configuration.

  • From the configuration menu select: Integrations.

  • In the bottom right, click on the Add Integration button.

  • From the list, search and select “ClimaCell”.

  • Follow the instruction on screen to complete the set up.

After completing, the ClimaCell integration will be immediately available for use.