# css95/react-weather-app architecture

> Architecture diagram of the GitHub repository css95/react-weather-app, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-26). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/css95/react-weather-app
- Repository: https://github.com/css95/react-weather-app

## Overview

Weather Today is a React weather app for city search, current conditions and a seven-day forecast, with location-based weather and persistent favorites. The principal flow is search → routed city detail → geocoding and forecast requests → displayed conditions and forecast. The overview also supports location weather with a Stockholm fallback, and favorite cities can be revisited or removed. The graph includes documented overview capabilities whose component wiring was not sampled; those links are therefore limited. Responsive presentation is part of the UI, not a separate runtime subsystem.

Main entry points: [`src/pages/DetailPage.jsx`](https://github.com/css95/react-weather-app/blob/main/src/pages/DetailPage.jsx) (City detail), [`src/App.jsx`](https://github.com/css95/react-weather-app/blob/main/src/App.jsx) (App router), [`src/api/weather.js`](https://github.com/css95/react-weather-app/blob/main/src/api/weather.js) (Weather API client), [`src/hooks/useLocationWeather.js`](https://github.com/css95/react-weather-app/blob/main/src/hooks/useLocationWeather.js) (Location weather hook)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_routing["App and routing"]
  node_app["App router<br/>[App.jsx]"]
  node_entry["React entry<br/>[main.jsx]"]
  node_layout["App layout<br/>[Layout.jsx]"]
  node_search["City search<br/>[SearchForm.jsx]"]
  node_error["Error view<br/>[ErrorPage.jsx]"]
end

subgraph group_weather["Weather retrieval"]
  node_overview["Overview view<br/>[OverviewPage.jsx]"]
  node_detail["City detail<br/>[DetailPage.jsx]"]
  node_locationhook["Location weather hook"]
  node_weatherhook["City weather hook<br/>[useWeather.js]"]
  node_geolocation["Browser location<br/>[geolocation.js]"]
  node_weatherapi["Weather API client<br/>[weather.js]"]
end

subgraph group_presentation["Weather views"]
  node_weathercard["Current conditions<br/>[WeatherCard.jsx]"]
  node_summary["Weather summary<br/>[WeatherSummary.jsx]"]
  node_forecastlist["Seven-day forecast<br/>[ForecastList.jsx]"]
  node_forecastdays["Forecast shaping<br/>[forecastDays.js]"]
  node_codes["Weather code labels<br/>[weatherCodes.js]"]
end

subgraph group_favorites["Saved cities"]
  node_favoritesprovider["Favorites state"]
  node_favoriteslist["Favorites list<br/>[FavoritesList.jsx]"]
end

node_user(("User"))
node_geocoding["Open-Meteo geocoding"]
node_forecastservice["Open-Meteo forecast"]
node_localstorage[("Browser storage")]

node_user -->|"opens app"| node_entry
node_entry -->|"wraps app"| node_favoritesprovider
node_entry -->|"renders"| node_app
node_app -->|"routes through"| node_layout
node_app -->|"routes to"| node_overview
node_app -->|"routes to"| node_detail
node_app -->|"routes to"| node_error
node_layout -->|"renders"| node_search
node_layout -->|"renders"| node_favoriteslist
node_search -->|"navigates"| node_app
node_overview -->|"loads location weather"| node_locationhook
node_locationhook -->|"requests position"| node_geolocation
node_locationhook -->|"requests coordinate weather"| node_weatherapi
node_locationhook -->|"fallback city request"| node_weatherapi
node_detail -->|"loads city weather"| node_weatherhook
node_weatherhook -->|"requests city weather"| node_weatherapi
node_weatherapi -->|"looks up city"| node_geocoding
node_weatherapi -->|"requests forecast"| node_forecastservice
node_detail -->|"renders conditions"| node_weathercard
node_detail -->|"maps condition code"| node_codes
node_detail -->|"shapes daily data"| node_forecastdays
node_detail -->|"renders forecast"| node_forecastlist
node_overview -->|"shows weather summary"| node_summary
node_weathercard -->|"updates favorites"| node_favoritesprovider
node_favoriteslist -->|"reads favorites"| node_favoritesprovider
node_favoritesprovider -->|"loads and saves"| node_localstorage

click node_app "https://github.com/css95/react-weather-app/blob/main/src/App.jsx"
click node_entry "https://github.com/css95/react-weather-app/blob/main/src/main.jsx"
click node_layout "https://github.com/css95/react-weather-app/blob/main/src/layout/Layout.jsx"
click node_search "https://github.com/css95/react-weather-app/blob/main/src/components/SearchForm.jsx"
click node_overview "https://github.com/css95/react-weather-app/blob/main/src/pages/OverviewPage.jsx"
click node_detail "https://github.com/css95/react-weather-app/blob/main/src/pages/DetailPage.jsx"
click node_error "https://github.com/css95/react-weather-app/blob/main/src/pages/ErrorPage.jsx"
click node_locationhook "https://github.com/css95/react-weather-app/blob/main/src/hooks/useLocationWeather.js"
click node_weatherhook "https://github.com/css95/react-weather-app/blob/main/src/hooks/useWeather.js"
click node_geolocation "https://github.com/css95/react-weather-app/blob/main/src/utils/geolocation.js"
click node_weatherapi "https://github.com/css95/react-weather-app/blob/main/src/api/weather.js"
click node_weathercard "https://github.com/css95/react-weather-app/blob/main/src/components/WeatherCard.jsx"
click node_summary "https://github.com/css95/react-weather-app/blob/main/src/components/WeatherSummary.jsx"
click node_forecastlist "https://github.com/css95/react-weather-app/blob/main/src/components/ForecastList.jsx"
click node_forecastdays "https://github.com/css95/react-weather-app/blob/main/src/utils/forecastDays.js"
click node_codes "https://github.com/css95/react-weather-app/blob/main/src/utils/weatherCodes.js"
click node_favoritesprovider "https://github.com/css95/react-weather-app/blob/main/src/context/FavoritesContext.jsx"
click node_favoriteslist "https://github.com/css95/react-weather-app/blob/main/src/components/FavoritesList.jsx"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_app,node_entry,node_layout,node_search,node_error,node_user toneBlue
class node_overview,node_detail,node_locationhook,node_weatherhook,node_geolocation,node_weatherapi,node_localstorage toneAmber
class node_weathercard,node_summary,node_forecastlist,node_forecastdays,node_codes toneMint
class node_favoritesprovider,node_favoriteslist toneRose
class node_geocoding,node_forecastservice toneIndigo
```

## Components

### App and routing

- [App router](https://github.com/css95/react-weather-app/blob/main/src/App.jsx): `src/App.jsx`
- [React entry](https://github.com/css95/react-weather-app/blob/main/src/main.jsx): `src/main.jsx`
- [App layout](https://github.com/css95/react-weather-app/blob/main/src/layout/Layout.jsx): `src/layout/Layout.jsx`
- [City search](https://github.com/css95/react-weather-app/blob/main/src/components/SearchForm.jsx): `src/components/SearchForm.jsx`
- [Error view](https://github.com/css95/react-weather-app/blob/main/src/pages/ErrorPage.jsx): `src/pages/ErrorPage.jsx`

### Weather retrieval

- [Overview view](https://github.com/css95/react-weather-app/blob/main/src/pages/OverviewPage.jsx): `src/pages/OverviewPage.jsx`
- [City detail](https://github.com/css95/react-weather-app/blob/main/src/pages/DetailPage.jsx): `src/pages/DetailPage.jsx`
- [Location weather hook](https://github.com/css95/react-weather-app/blob/main/src/hooks/useLocationWeather.js): `src/hooks/useLocationWeather.js`
- [City weather hook](https://github.com/css95/react-weather-app/blob/main/src/hooks/useWeather.js): `src/hooks/useWeather.js`
- [Browser location](https://github.com/css95/react-weather-app/blob/main/src/utils/geolocation.js): `src/utils/geolocation.js`
- [Weather API client](https://github.com/css95/react-weather-app/blob/main/src/api/weather.js): `src/api/weather.js`

### Weather views

- [Current conditions](https://github.com/css95/react-weather-app/blob/main/src/components/WeatherCard.jsx): `src/components/WeatherCard.jsx`
- [Weather summary](https://github.com/css95/react-weather-app/blob/main/src/components/WeatherSummary.jsx): `src/components/WeatherSummary.jsx`
- [Seven-day forecast](https://github.com/css95/react-weather-app/blob/main/src/components/ForecastList.jsx): `src/components/ForecastList.jsx`
- [Forecast shaping](https://github.com/css95/react-weather-app/blob/main/src/utils/forecastDays.js): `src/utils/forecastDays.js`
- [Weather code labels](https://github.com/css95/react-weather-app/blob/main/src/utils/weatherCodes.js): `src/utils/weatherCodes.js`

### Saved cities

- [Favorites state](https://github.com/css95/react-weather-app/blob/main/src/context/FavoritesContext.jsx): `src/context/FavoritesContext.jsx`
- [Favorites list](https://github.com/css95/react-weather-app/blob/main/src/components/FavoritesList.jsx): `src/components/FavoritesList.jsx`

### Other components

- **User**
- **Open-Meteo geocoding**
- **Open-Meteo forecast**
- **Browser storage**

## Connections

- User → React entry: opens app
- React entry → Favorites state: wraps app
- React entry → App router: renders
- App router → App layout: routes through
- App router → Overview view: routes to
- App router → City detail: routes to
- App router → Error view: routes to
- App layout → City search: renders
- App layout → Favorites list: renders
- City search → App router: navigates
- Overview view → Location weather hook: loads location weather
- Location weather hook → Browser location: requests position
- Location weather hook → Weather API client: requests coordinate weather
- Location weather hook → Weather API client: fallback city request
- City detail → City weather hook: loads city weather
- City weather hook → Weather API client: requests city weather
- Weather API client → Open-Meteo geocoding: looks up city
- Weather API client → Open-Meteo forecast: requests forecast
- City detail → Current conditions: renders conditions
- City detail → Weather code labels: maps condition code
- City detail → Forecast shaping: shapes daily data
- City detail → Seven-day forecast: renders forecast
- Overview view → Weather summary: shows weather summary
- Current conditions → Favorites state: updates favorites
- Favorites list → Favorites state: reads favorites
- Favorites state → Browser storage: loads and saves