Moderate Activity 🌒 15% Updated live

Aurora Forecast for
Watertown Square Tonight

Current northern lights conditions for Watertown Square, Massachusetts, United States. Latitude 42.4°N · AACGM-v2 magnetic latitude 49.6°N.

Quick Summary: The estimated northern lights outlook for Watertown Square peaks at 0% over the next 24 hours. No suitable viewing window.

Aurora forecast

0%

Estimated

Highest estimate · next 24 hours

Viewing window

No suitable viewing window

America/New_York

Kp index

3.33

Moderate

Planetary geomagnetic activity

Cloud cover

16%

Clear skies

Current sky visibility

Aurora

Tonight's Verdict

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

Hourly Forecast · Estimated

05
05:00 — 0%
06:00 — 0%
07:00 — 0%
08:00 — 0%
09:00 — 0%
10:00 — 0%
11
11:00 — 0%
12:00 — 0%
13:00 — 0%
14:00 — 0%
15:00 — 0%
16:00 — 0%
17
17:00 — 0%
18:00 — 0%
19:00 — 0%
20:00 — 0%
21:00 — 0%
22:00 — 0%
23
23:00 — 0%
00:00 — 0%
01:00 — 0%
02:00 — 0%
03:00 — 0%
04:00 — 0%
05:00 UTC11:00 UTC17:00 UTC23:00 UTC04:00 UTC
Time (UTC)Estimated (%)
2026-10-15T05:00:00.000Z0%
2026-10-15T06:00:00.000Z0%
2026-10-15T07:00:00.000Z0%
2026-10-15T08:00:00.000Z0%
2026-10-15T09:00:00.000Z0%
2026-10-15T10:00:00.000Z0%
2026-10-15T11:00:00.000Z0%
2026-10-15T12:00:00.000Z0%
2026-10-15T13:00:00.000Z0%
2026-10-15T14:00:00.000Z0%
2026-10-15T15:00:00.000Z0%
2026-10-15T16:00:00.000Z0%
2026-10-15T17:00:00.000Z0%
2026-10-15T18:00:00.000Z0%
2026-10-15T19:00:00.000Z0%
2026-10-15T20:00:00.000Z0%
2026-10-15T21:00:00.000Z0%
2026-10-15T22:00:00.000Z0%
2026-10-15T23:00:00.000Z0%
2026-10-16T00:00:00.000Z0%
2026-10-16T01:00:00.000Z0%
2026-10-16T02:00:00.000Z0%
2026-10-16T03:00:00.000Z0%
2026-10-16T04:00:00.000Z0%
How to read this forecast

The next 24 hours use calculated local darkness and a retained aurora activity heuristic. They are not a measured or statistically calibrated chance of seeing aurora. Aggregate cloud cover is held constant unless a timed weather forecast is available.

Generated 2026-10-15T04:23:44.169Z. Kp: fresh · observation 2026-10-15T03:00:00.000Z. Cloud: fresh · cache refresh 2026-10-15T02:31:08.799+00:00. Overall model: estimated.

Window: No suitable viewing window. A dash marks a missing input; zero means the model found no visibility under the supplied conditions.

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Oct 16

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Oct 17

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Oct 18

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About Aurora Viewing in Watertown Square

Watertown Square, United States, is at 42.4°N. Aurora visibility depends on local conditions as well as geomagnetic activity. Its verified magnetic latitude is 49.6°N; Kp 7–9 is an approximate screening range, not a visibility probability. Sightings at this latitude are unusual and should not be expected on a typical night. Find a dark, open northern horizon and check the sky before travelling.

Follow forecasts, cloud maps and aurora alerts for Watertown Square in Aurora Hunt, then confirm darkness, local cloud and access before going outside.

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Frequently Asked Questions

Can you see aurora in Watertown Square tonight?
Aurora visibility in Watertown Square depends on geomagnetic activity (Kp index), cloud cover, and darkness. At 42.4°N latitude, Watertown Square typically needs a Kp index of 7–9 for visible aurora. Check the real-time forecast above for tonight's conditions.
What time is best to see northern lights in Watertown Square?
The best time to see aurora in Watertown 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 Watertown Square?
For the best aurora viewing in Watertown 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 Watertown Square?
Watertown Square is at 42.4°N latitude and typically requires a Kp index of 7–9 for visible aurora. Higher Kp values mean stronger geomagnetic storms and better aurora visibility, even at lower latitudes.
Is Watertown Square, United States a good place to see northern lights?
Watertown Square can see aurora during strong geomagnetic storms. Located at 42.4°N, aurora is visible when Kp index reaches 7–9 or higher.

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