Aurora Forecast & Alerts Now

Should you go out tonight? See your real chance to spot the northern lights, by eye and by phone camera. Alerts only when it is dark and clear where you are.

Should you go out tonight? Aurora Forecast & Alerts Now gives one plain answer for where you are: Go, Maybe, or Stay in, with the reason in one line, like "Clouds 80% here" or "Dark, clear and active".

TWO CHANCES: NAKED EYE AND PHONE CAMERA Your eyes and your phone camera see the aurora differently. A phone camera catches faint, low aurora that looks gray or invisible to the eye. So the app shows two chances side by side:

• Naked eye: the chance you will see it yourself.
• Phone camera: the chance a photo will catch it. Far from the auroral zone, the camera chance is often the one worth watching.

WHAT GOES INTO THE ANSWER

• Aurora activity: the latest aurora forecast from the NOAA Space Weather Prediction Center, refreshed every few minutes.
• Darkness: worked out for your spot, so a daytime spike never reads as a good night.
• Cloud cover: from Apple Weather. Strong aurora behind thick cloud is still a stay-in night.
• Kp index with a plain label: quiet, unsettled, active or storm.

ALERTS ONLY WHEN IT IS DARK AND CLEAR (PRO) An alert fires only when the chance passes the level you choose and it is dark and clear where you are. Pick naked eye or camera, choose how far you would drive, and limit alerts to before midnight if you like. Our server checks every 10 minutes, and the app shows that alerts are on and healthy, so you know they are working.

ABOUT THE PERCENTAGES Every percentage in the app is an estimate. It combines NOAA's aurora forecast with darkness and cloud cover using our own model. Aurora is hard to predict: a high chance can fade and a low one can surprise you. Use it to decide whether to step outside, not as a promise.

FREE

• Tonight's verdict: Go, Maybe or Stay in, with the reason
• Naked eye and phone camera chance for tonight
• Kp now and tonight's expected max
• Live aurora map
• Kp outlook for the next 3 days, plus the 27-day outlook (a rough guide)
• Plain-language explanations of every reading
• Red night mode to protect your night vision

PRO

• Aurora alerts for your location, travel radius and trips
• Hour-by-hour chance through tonight and the best time to look
• Cloud layer and best spots on the map
• Extra locations, and trips with a chance for each night

PRIVACY No account, no ads, no analytics. Location is optional, and approximate location works. If you turn on alerts, our server keeps your location rounded to 0.1 degree, your alert settings, a notification token and your subscription status, and deletes them when you turn alerts off.

DATA SOURCES Aurora data: NOAA Space Weather Prediction Center. Weather: Apple Weather. NOAA does not endorse this app.

SUBSCRIPTION AND PURCHASE TERMS Aurora Pro is available as:

• Aurora Pro Weekly: $4.99 per week, auto-renewing subscription
• Aurora Pro Yearly: $29.99 per year, auto-renewing subscription
• Aurora Pro Lifetime: $49.99, one-time purchase that does not renew Prices are in US dollars and may differ in other countries. Payment is charged to your Apple Account when you confirm the purchase. A subscription renews automatically at the same length and price unless you turn off auto-renew at least 24 hours before the end of the current period. Your account is charged for the renewal within the 24 hours before the current period ends. Manage or cancel your subscription in the Settings app: tap your name, then Subscriptions. You can also open it from Settings in the app. Deleting the app does not cancel a subscription.

Terms of Use: https://swapnil-jain.github.io/aurora/terms.html Privacy Policy: https://swapnil-jain.github.io/aurora/privacy.html