What time is it in Alton, Illinois?

Alton is currently on daylight saving time. The next change is Sunday, November 1, 2026, when 2:00 am becomes 1:00 am local time.

Alton sits at 38.90°N, 90.15°W. For sunrise and sunset there — which do depend on exactly where it is, unlike the clock — see sunrise and sunset in Alton.

The clock says the same thing everywhere in Central Daylight Time, but the sun does not. Over Alton it is highest at 12:52 pm today — 52 minutes after clock noon.

At 90.2°W, Alton sits well toward the western edge of its zone, which is why the sun stays up later here than the clock suggests. Daylight saving adds another hour on top until the clocks change.

Today runs 12 hours 2 minutes in Alton, and the day is getting shorter by 3 minutes a day. Across the year it swings 5 hours 28 minutes, from 14 hours 54 minutes at the June solstice down to 9 hours 26 minutes in December.

At 38.9°N that puts Alton between Kailua at 2 hours 22 minutes and Fairbanks at 18 hours 9 minutes.