After today's downpour soaked the city and turned every Muni stop into a small lake, San Francisco got a rare treat: a full double rainbow arcing across the sky.

No permits were required. No environmental impact report was filed. No city supervisor took credit for it. It just happened — a brief, stunning reminder that not everything beautiful in this city comes with a $4 billion price tag and a decade of delays.

Residents across neighborhoods pulled out their phones, stepped onto fire escapes, and did something San Franciscans rarely do: looked up from their screens and agreed on something. It was gorgeous.

Look, we spend a lot of time in this column talking about what's broken — the budget, the bureaucracy, the barely functional infrastructure. And we'll get back to that tomorrow, trust us. But sometimes the city does something right without even trying. Today the rain came, the clouds parted, and physics did its thing. Two concentric arcs of color stretched across the skyline, no committee needed.

If you missed it, that's on you. Unlike most things in San Francisco, this one was completely free, required zero taxpayer funding, and delivered exactly what was promised — on time.

We'd suggest the city take notes, but we know better.