explaingit

thewillmiller/radar-wise

Analysis updated 2026-05-18

23JavaScriptAudience · generalComplexity · 2/5Setup · easy

TLDR

A Home Assistant dashboard card showing current weather, forecasts, and optional live radar, pulling data from your existing Home Assistant weather source.

Mindmap

mindmap
  root((RadarWise))
    What it does
      Weather dashboard card
      Live radar view
      Hourly daily forecast
    Tech stack
      JavaScript
      Home Assistant
      HACS
    Use cases
      Smart home dashboard
      Regional radar display
      Forecast at a glance
    Audience
      Home Assistant users
      Smart home hobbyists
      General

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Add a detailed weather panel with hourly and daily forecasts to a Home Assistant dashboard.

USE CASE 2

Display live radar imagery for your region alongside current weather conditions.

USE CASE 3

Customize the dashboard layout, theme, and language of the weather card visually.

USE CASE 4

Fall back to local temperature, humidity, or dew point sensors when your weather entity lacks that data.

What is it built with?

JavaScriptHome AssistantHACSYAML

How does it compare?

thewillmiller/radar-wiseavbiswas/llm_visualizerccpt5/comfyui-berninistudio
Stars232323
LanguageJavaScriptJavaScriptJavaScript
Setup difficultyeasymoderatemoderate
Complexity2/53/53/5
Audiencegeneraldevelopervibe coder

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 30min

Requires an existing Home Assistant weather entity and, for the recommended install path, HACS added as a custom repository.

License terms are not shown in the excerpt of the README, check the repository's LICENSE file for exact terms.

In plain English

RadarWise is a custom weather card for Home Assistant, an open source home automation platform, that adds a detailed weather panel to a Home Assistant dashboard. It shows current conditions, hourly and daily forecasts, humidity, wind, dew point, sunrise and sunset times, and an optional live radar view, all pulled from a weather source already connected to your Home Assistant setup. Because it reads from an existing Home Assistant weather entity rather than calling its own weather service, it does not need or store any private weather API keys inside the dashboard configuration. Radar imagery defaults to different public sources depending on region, using NOAA radar in the United States, Environment Canada radar in Canada, and a global radar service called RainViewer everywhere else, including as a fallback option in the US and Canada. The card still shows current conditions and forecasts in other regions such as Australia or Europe, though radar coverage and local weather alerts may be more limited there. The card comes with a visual editor inside Home Assistant so it can be configured without hand writing YAML, though YAML configuration is also supported for more control. Options include several layout presets, drag and drop panel ordering, adjustable panel widths, multiple supported languages, both Fahrenheit and Celsius units, and radar playback controls like pausing and stepping through frames. It also supports optional fallback sensors for temperature, humidity, and dew point when the connected weather entity does not provide that data itself. Installation is recommended through HACS, a popular community add on manager for Home Assistant, added as a custom repository since the card is not yet listed in the default HACS store. It can also be installed manually by copying a JavaScript file into Home Assistant's local resources folder. The project was previously named WeatherWise and includes a compatibility layer so dashboards referencing the old file name continue to work after upgrading.

Copy-paste prompts

Prompt 1
Walk me through installing RadarWise in Home Assistant using HACS as a custom repository.
Prompt 2
Show me a RadarWise YAML configuration for my region with radar enabled.
Prompt 3
Explain the difference between radarwise theme mode and auto theme mode in this card.
Prompt 4
Help me set up fallback sensors for humidity and dew point in RadarWise's visual editor.

Frequently asked questions

What is radar-wise?

A Home Assistant dashboard card showing current weather, forecasts, and optional live radar, pulling data from your existing Home Assistant weather source.

What language is radar-wise written in?

Mainly JavaScript. The stack also includes JavaScript, Home Assistant, HACS.

What license does radar-wise use?

License terms are not shown in the excerpt of the README, check the repository's LICENSE file for exact terms.

How hard is radar-wise to set up?

Setup difficulty is rated easy, with roughly 30min to a first successful run.

Who is radar-wise for?

Mainly general.

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