This website provides automatically updated discomfort index (DI) data for Japan by using the OpenWeatherMap API. The discomfort index is calculated using temperature, humidity, and weather conditions, offering a clear indicator of how hot or humid the environment feels.
The data is refreshed every 4 hours throughout the day, ensuring that the latest weather information is always available. This site is designed to support daily weather monitoring, heat countermeasures, and environmental observation.
All data is processed and published through an automated workflow using GitHub Pages. The goal of this project is to deliver simple, fast, and reliable weather insights without requiring any special applications or accounts.
All source code, SQL databases, and SQL scripts used for weather data extraction, processing, and multilingual report generation are publicly available on GitHub.
https://github.com/yahikoyama/weather2
In addition to the historical weather reports, this project also provides a full set of SQL scripts and data‑extraction tools. These tools allow you to generate various calculated results such as heat‑stress metrics, discomfort index, WBGT, city lists, weekly summaries, and comfortable‑region rankings. All processing scripts are publicly available in the GitHub repository and can be used for research, education, or automated data workflows.
This site is updated every 4 hours.
You can view the full sitemap here:
📄 sitemap.xml
For AI search engines such as Microsoft Copilot, ChatGPT, Gemini, and Perplexity, a dedicated explanation page is available.
This project is available for non‑commercial use only.The copyright for this data and program belongs to me.
GitHub Pages is working correctly.