Low Activity 🌕 100% Updated live

Aurora Forecast for
Union Square Tonight

Real-time northern lights conditions for Union Square, Massachusetts, United States. Latitude 42.4°N · Magnetic latitude 46.9°

Aurora Probability

5%

Low Likelihood

Chance of visible aurora tonight

Best Time

23:00

– 01:00

Optimal viewing window

Kp Index

2

Low

Planetary geomagnetic activity

Cloud Cover

37%

Partly cloudy

Current sky visibility

Aurora

Tonight's Verdict

Low aurora probability in Union Square tonight. Check back tomorrow for updated conditions.

🌕 Warning: Bright moonlight (100%) may reduce aurora visibility.

Hourly Forecast

00
00:00 — 5%
01:00 — 5%
02:00 — 5%
03:00 — 5%
04:00 — 5%
05:00 — 5%
06
06:00 — 5%
07:00 — 5%
08:00 — 5%
09:00 — 5%
10:00 — 5%
11:00 — 5%
12
12:00 — 5%
13:00 — 5%
14:00 — 5%
15:00 — 5%
16:00 — 5%
17:00 — 5%
18
18:00 — 5%
19:00 — 5%
20:00 — 5%
21:00 — 5%
22:00 — 5%
23:00 — 5%
00:00 06:00 12:00 18:00 23:00
Time (UTC)Aurora Probability (%)
00:005%
01:005%
02:005%
03:005%
04:005%
05:005%
06:005%
07:005%
08:005%
09:005%
10:005%
11:005%
12:005%
13:005%
14:005%
15:005%
16:005%
17:005%
18:005%
19:005%
20:005%
21:005%
22:005%
23:005%

27-Day Forecast

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Apr 3

Kp Index •••
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Apr 4

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Apr 5

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About Aurora Viewing in Union Square

Sitting at a latitude of 42.4°N, Union Square provides a a possible location base for northern lights hunting. To see the aurora borealis from here, you'll generally need the Kp index to reach 6+. Head to a dark spot between 10 PM and 2 AM local time, and make sure the skies are clear.

Aurora Hunt provides real-time alerts, cloud cover maps, and aurora probability forecasts specifically for Union Square. Download the app to get notified when conditions are perfect for viewing.

Learn More & Prepare

How to Read a Forecast

Master the three core metrics — Kp index, cloud cover, and darkness.

Kp Index Explained

Understand the 0–9 scale that drives predictions and viewing latitudes.

Photography Guide

Settings and smartphone tips to capture stunning aurora photos.

Frequently Asked Questions

Can you see aurora in Union Square tonight?
Aurora visibility in Union Square depends on geomagnetic activity (Kp index), cloud cover, and darkness. At 42.4°N latitude, Union Square typically needs a Kp index of 6+ for visible aurora. Check the real-time forecast above for tonight's conditions.
What time is best to see northern lights in Union Square?
The best time to see aurora in Union Square is typically between 10 PM and 2 AM local time, when skies are darkest. Aurora can appear any time after astronomical twilight, but peak activity usually occurs around local midnight.
Where to watch aurora in Union Square?
For the best aurora viewing in Union Square, find a location away from city light pollution with a clear view to the north. Dark areas outside the city center, elevated viewpoints, and spots near water are ideal. Check cloud cover before heading out.
What Kp index is needed to see aurora in Union Square?
Union Square is at 42.4°N latitude and typically requires a Kp index of 6+ for visible aurora. Higher Kp values mean stronger geomagnetic storms and better aurora visibility, even at lower latitudes.
Is Union Square, United States a good place to see northern lights?
Union Square can see aurora during strong geomagnetic storms. Located at 42.4°N, aurora is visible when Kp index reaches 6+ or higher.

Nearby Aurora Destinations

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Agate Beach

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