Monterrey to Chicago Time Difference
Chicago is 1 hour ahead of Monterrey. When it's 10:27:18 AM in Monterrey, it's 11:27:18 AM in Chicago.
How Many Hours Ahead Is Chicago From Monterrey?
Chicago is 1 hour ahead of Monterrey. So Monterrey is 1 hour behind Chicago looking the other way — the same gap, described from the other end.
In practice that means a working day in Monterrey starts when it is already 10:00 AM in Chicago. The gap is not fixed all year: it becomes on Sunday, November 1, 2026, when Chicago changes its clocks.
Best Time to Call Monterrey and Chicago
Both cities are inside normal business hours between 9:00 AM and 4:00 PM in Monterrey — that's 10:00 AM to 5:00 PM in Chicago. That's a 7-hour window, so a call fits comfortably in either side's working day.
both at work Monterrey only Chicago only neither — hours shown along the strip are Monterrey local time.
Convert a Specific Time
Pick any date and time in Monterrey to see the exact equivalent in Chicago.
Common Times Converted
Monterrey time on the left, Chicago time on the right.
Monterrey to Chicago: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in Monterrey. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Monterrey | Chicago | Working hours |
|---|---|---|
| 12:00 AM | 1:00 AM | — |
| 1:00 AM | 2:00 AM | — |
| 2:00 AM | 3:00 AM | — |
| 3:00 AM | 4:00 AM | — |
| 4:00 AM | 5:00 AM | — |
| 5:00 AM | 6:00 AM | — |
| 6:00 AM | 7:00 AM | — |
| 7:00 AM | 8:00 AM | — |
| 8:00 AM | 9:00 AM | Chicago only |
| 9:00 AM | 10:00 AM | Both cities |
| 10:00 AM | 11:00 AM | Both cities |
| 11:00 AM | 12:00 PM | Both cities |
| 12:00 PM | 1:00 PM | Both cities |
| 1:00 PM | 2:00 PM | Both cities |
| 2:00 PM | 3:00 PM | Both cities |
| 3:00 PM | 4:00 PM | Both cities |
| 4:00 PM | 5:00 PM | Monterrey only |
| 5:00 PM | 6:00 PM | — |
| 6:00 PM | 7:00 PM | — |
| 7:00 PM | 8:00 PM | — |
| 8:00 PM | 9:00 PM | — |
| 9:00 PM | 10:00 PM | — |
| 10:00 PM | 11:00 PM | — |
| 11:00 PM | 12:00 AM next day | — |
Understanding the Monterrey – Chicago Time Difference
Monterrey runs on America/Monterrey, currently CST (UTC-6:00). Chicago runs on America/Chicago, currently CDT (UTC-5:00). The gap of 1 hour is simply the distance between those two offsets.
Chicago observes Daylight Saving Time and Monterrey does not, so the gap between them shifts by an hour twice a year. The next shift is on Sunday, November 1, 2026, when Chicago adjusts its clocks and the difference becomes . Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in Mexico · Daylight Saving Time in the United States.
Monterrey today
Chicago today
Frequently Asked Questions
What is the time difference between Monterrey and Chicago?
Chicago is currently 1 hour ahead of Monterrey. That gap becomes on Sunday, November 1, 2026, when Chicago changes its clocks.
How many hours ahead is Chicago from Monterrey?
Chicago is 1 hour ahead of Monterrey. Looking at it the other way, Monterrey is 1 hour behind Chicago.
What time is it in Chicago when it is 9:00 AM in Monterrey?
When it is 9:00 AM in Monterrey, it is 10:00 AM in Chicago.
Is Chicago ahead of or behind Monterrey?
Chicago is 1 hour ahead of Monterrey. Chicago reaches each point in the day first, so its working day is already finishing while Monterrey is still getting started.
What is the best time to call between Monterrey and Chicago?
Between 9:00 AM and 4:00 PM Monterrey time, which is 10:00 AM to 5:00 PM in Chicago. Both cities are inside normal business hours during that window.
Does the time difference between Monterrey and Chicago change during the year?
Yes. Chicago observes Daylight Saving Time and Monterrey does not, so the gap between them shifts during the year. It changes to on Sunday, November 1, 2026.
What time zones are Monterrey and Chicago in?
Monterrey uses the America/Monterrey time zone, currently CST (UTC-6:00). Chicago uses America/Chicago, currently CDT (UTC-5:00).