nea_sg_weather

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Home Assistant integration for NEA Weather forecasts

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# NEA Singapore Weather Integration for Home Assistant

[CHANGELOG](CHANGELOG.md)

Home Assistant Integration to get current weather information directly from Data.gov.sg weather API published by Singapore National Environment Agency (SG NEA)

![image](https://user-images.githubusercontent.com/57534857/142906976-9f28571f-290f-42e1-85a0-68ee23f917d8.png)

![image](https://user-images.githubusercontent.com/57534857/142907008-1e5b1f76-c054-4797-b73f-8ad0d22e6b4c.png)

## Installation

Add this integration to Home Assistant using HACS, or copy everything in `custom_components/nea_sg_weather` to your `custom_components` folder in your Home Assistant `config` folder.

Follow the integration config flow to set up the following entities:
- `weather`: weather entity with 4 day forecasts
- `area` (town) sensors: current weather conditions for up to 47 areas/towns in Singapore
- `region` sensors: 24 hour weather condition forecast for North/South/East/West/Central regions of Singapore
- `rain` camera: 2 camera entities for static and animated rain map overlays updated every 5 minutes from NEA
- `rain` sensors: one rainfall sensor per active NEA station, fetched live from the API — stations are added and removed automatically as the API changes
- `pm25` sensors: 5 pm2.5 sensors for North/South/East/West/Central regions of Singapore
- `uv_index` sensor: UV index for Singapore

## Weather Map Overlays

Several `yaml` files are included to help you quickly set up a weather map card on Lovelace UI.
![image](https://user-images.githubusercontent.com/57534857/142712510-cabf3214-09c2-4fda-8d43-ff230aebd91c.png)

For the overlays to display properly, you will need the `area`, `region` and `rain` entities activated in the config flow.

1. `input_boolean.yaml`: to set up `input_boolean` toggles for the map overlays
2. `automations.yaml`: automations to manage how the map toggles work
3. `lovelace.yaml`: preset card config to display the weather map card

Instructions for how to integrate the `yaml` files are included in the various files in the `nea_sg_weather/yaml` folder.

## Rainfall sensors

Rainfall sensors are created dynamically from the live NEA API — no static station list is used. Orphaned sensors (stations decommissioned by NEA) are automatically removed from Home Assistant on startup and whenever the station list changes at runtime.

Sensors include location attributes so they can be displayed on a Lovelace map card.

For entity pictures to display correctly, copy all image files in `www/weather/` to your `config/www/weather/` folder.
![image](https://user-images.githubusercontent.com/57534857/171048147-5e6dcfd3-40c4-4eff-a09c-f1f6c31ddb92.png)

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