A new web tool called SF Microclimates lets you explore temperature and weather variations across San Francisco. Built by a solo founder, it maps data from personal weather stations, revealing how neighborhoods like the Mission and Sunset can differ by 10°F on the same day.

This project taps into the growing citizen science and open data movement. Enthusiasts have long noted the city's dramatic microclimates, but visualizing them with accessible tools makes the pattern tangible for residents and developers planning outdoor activities or urban projects.

The tool's simplicity is its strength, offering a clean interface for exploring hyperlocal conditions. It joins a suite of community-built weather visualization projects, demonstrating how indie developers can create practical applications with public data APIs and modern web frameworks.