Is Nacreous Clouds (Polar Stratospheric) happening right now?
As of Dec 7, 2025, 12:00 PM, out of season, returns ~November. Earth Exhibit tracks the live conditions and flags it the moment it is on.
Witness rare mother-of-pearl clouds glowing with iridescent colors high above polar regions at dawn and dusk.
This is the short version
This page shows a taste. The app has the full list of where to see this, the exact timing, and live conditions for 1,000+ natural phenomena worldwide, so you know the moment one is genuinely worth the trip.