Apps by The University of Michigan
AuroraTonight! app icon

Weather

AuroraTonight!

The University of Michigan

Free No in-app purchases
Open on Apple

About this app

AuroraTonight! is based on an advanced machine learning model that can predict magnetic perturbations around the world up to two hours in advance with unprecedented accuracy. The strongest magnetic perturbations are caused by the aurora, so we can forecast the aurora for any location an hour earlier than the other models. The app provides global notifications up to three days ahead based on NOAA forecast and local alerts up to two hours ahead. The local alerts take into account darkness and clear sky conditions.

Latest release

What’s New

Version 1.1 Jun 12, 2026

Older iOS versions (15.0 or later) are now allowed and they work correctly.

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
0 ratings
0 Aug 6, 2026 · 0 ratings Aug 6, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current Free
Historical low Free
Paid → free
Price history
Current Free
Free Aug 6, 2026 · Free Aug 6, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Aug 6, 2026 · 8:25 AM Free

Screenshots

AuroraTonight! iPhone screenshotAuroraTonight! iPhone screenshotAuroraTonight! iPhone screenshot AuroraTonight! iPad screenshotAuroraTonight! iPad screenshotAuroraTonight! iPad screenshot