What time is it in Buffalo Grove, Illinois?

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

Buffalo Grove sits at 42.17°N, 87.96°W. For sunrise and sunset there — which do depend on exactly where it is, unlike the clock — see sunrise and sunset in Buffalo Grove.

The clock says the same thing everywhere in Central Daylight Time, but the sun does not. Over Buffalo Grove it is highest at 12:43 pm today — 43 minutes after clock noon.

At 88.0°W, Buffalo Grove sits comfortably inside its zone. Daylight saving adds another hour on top until the clocks change.

Today runs 12 hours 1 minute in Buffalo Grove, and the day is getting shorter by 3 minutes a day. Across the year it swings 6 hours 10 minutes, from 15 hours 16 minutes at the June solstice down to 9 hours 6 minutes in December.

At 42.2°N that puts Buffalo Grove between Kailua at 2 hours 22 minutes and Fairbanks at 18 hours 9 minutes.