Openweathermap-icons -

OpenWeatherMap Icons Implementation Report 1. Executive Summary

OpenWeatherMap (OWM) provides a robust, standardized icon set for visualizing weather conditions, integrated directly into their weather API data. These icons are designed to represent various weather phenomena—such as rain, snow, and thunder—and automatically handle day/night distinctions. They are frequently used in IoT weather stations (ESP32/ESP8266) and web applications to provide at-a-glance meteorological information. 2. Icon Structure and Access

In embedded systems, icons are often stored locally in SPIFFS (Serial Peripheral Interface Flash File System) for faster loading, or fetched directly via HTTP GET requests. openweathermap-icons

Using JavaScript, the icon code is retrieved from the JSON response and updated in the HTML tag.

Icons can be accessed via URL: http://openweathermap.org/img/wn/ followed by the code and size (e.g., @2x.png ). Naming Convention: 2x.png . 3. Implementation Methods A. Web Development (JS/HTML) OpenWeatherMap Icons Implementation Report 1

locationIcon.innerHTML = ;

The ThingPulse weather station library is commonly used to parse OWM data. They are frequently used in IoT weather stations

Many developers opt to replace standard icons with custom SVG or bitmap icons to fit specific display aesthetics (e.g., monochrome LCDs). 4. Key Weather Icon Categories The icons are categorized by weather conditions: Sunny/Clear: Sun/Moon icons representing clear skies.