I wanted a productive new tab page that loaded instantly. Most weather widgets require API key setup or phone home constantly. So I built my own. Weather & Clock Dashboard is a Firefox new tab extension. Here's what it does and how it works. What it does Live weather — current conditions + 3-day forecast for any city World clocks — multiple time zones side by side (great for remote teams) Search bar — uses your default Firefox search engine Dark/light mode — one-click toggle Technical approach Pure HTML/CSS/JS. No React, no Vue, no bundler, no dependencies. Weather data from Open-Meteo — a free, open-source weather API with no authentication required. The extension geocodes your city on first run, stores coordinates locally, and queries Open-Meteo from the browser directly. Nothing goes through my servers. Time zones use the browser's built-in Intl.DateTimeFormat API — accurate and no library needed. Total installed size: ~50KB. Load time: <100ms.…