What time is sunset in Alton today?

Sunset in Alton is at 6:33 PM local time (America/Chicago) on 2026-10-07.

What phase is the Moon tonight in Alton?

The Moon is a Waning Crescent and about 9% illuminated.

Astronomical twilight ends at 8:02 PM local time, so the sky is fully dark from then until 5:34 AM.

Moonrise in Alton is at 3:45 AM and moonset is at 5:02 PM local time.

Alton is too far from the poles for regular aurora; it would take a very strong geomagnetic storm.

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Kp2.7

Solar wind348 km/s

X-rayB9.5

StormG0 (Quiet)

Source: NOAA SWPC

2026-10-07 · times in America/Chicago · 38.89°N, 90.18°W

Event	Time
Sunrise	7:02 AM
Sunset	6:33 PM
Day length	11 h 31 min
End of civil twilight	7:00 PM
End of nautical twilight	7:31 PM
End of astronomical twilight	8:02 PM
Night length (sunset to sunrise)	12 h 29 min
Fully dark sky tonight	9 h 33 min
Astronomical twilight starts (morning)	5:34 AM

Moonrise	3:45 AM
Moonset	5:02 PM
Illumination	9.2%
Phase	Waning Crescent
Sublunar point (Moon overhead)	7.23°N, 144.96°W
Sublunar point ground speed	1,603 km/h

Moon values are for the moment this page was generated (19:16 UTC). A moonrise or moonset can be missing on a given date.

Planet	Rise	Set	Meridian	Visibility
Mercury (mag -0.1)	9:11 AM	7:24 PM	2:18 PM	Not visible tonight: below the horizon (or too low) while the sky is dark.
Venus (mag -4.6)	9:18 AM	6:56 PM	2:07 PM	Not visible tonight: below the horizon (or too low) while the sky is dark.
Mars (mag 1.1)	1:17 AM	3:39 PM	8:28 AM	Visible about 4.8 h after dark, highest 59° toward the SE.
Jupiter (mag -1.9)	2:36 AM	4:21 PM	9:29 AM	Visible about 3.5 h after dark, highest 45° toward the E.
Saturn (mag 0.2)	6:30 PM	6:50 AM	12:42 AM	Visible about 11.5 h after dark, highest 53° toward the S.

Aurora near poles only. Alton is too far from them to see regular aurora; it would take an extreme geomagnetic storm. See the live aurora forecast.