Best time to cross Nogales DeConcini: hour by hour from 30 days of CBP data

Nogales DeConcini is the central Nogales, Arizona crossing, primarily for passenger and pedestrian traffic. The 30-day median northbound wait is 45 minutes, still the heaviest of the Arizona ports we track (Mariposa runs 50 overall but is lighter through the morning, Douglas 35, San Luis 25, Naco 10). The lightest reliable window is Wednesday before dawn, where 1 AM medians 0 minutes and 2 and 3 AM both hold 10. The block to avoid is Monday before dawn: midnight and 1 AM both median 120 minutes, the heaviest cells at this port. All times are Arizona time.

What the data shows

Three patterns stand out:

1. Monday is the wall, and it starts before midnight. Monday's day median runs 85 to 90 minutes against 35 to 48 for every other day. It opens at 120 at midnight and 1 AM, eases through the morning to 60, then rebuilds to 90 from 3 PM through 11 PM. Nothing else in the grid comes close. The old Friday afternoon spike has flattened out: Friday's worst cells are now 3 and 4 PM at 90.
2. Wednesday before dawn is the genuine light window. Wednesday 1 AM medians 0 minutes, with 2 and 3 AM at 10 and midnight at 23. Sunday runs the same shape slightly heavier, bottoming at 10 at 4 AM and 15 at 3 AM. Both are well supported. Pooled across all seven days, the best hour on the clock is 8 AM at 30.
3. Thursday is the lightest full day, and Saturday is the flattest. Thursday medians 35 across the day and never breaks 48, which makes it the easiest day to plan around. Saturday sits at a monotonous 60 to 75 from midnight to midnight, with no useful window and no real peak either.

The port logged about 390 snapshots in this window, and every cell quoted above rests on at least five observations. The Monday wall and the Wednesday pre-dawn window are the stable shapes; the exact lightest hour on a given day can still shift as the rolling window updates.

DeConcini vs Mariposa

Mariposa is the other Nogales crossing, three miles west, and it handles most commercial truck traffic. For passenger vehicles:

• Mariposa is the better morning port, though the full-day numbers are now close: a 50-minute 30-day median against DeConcini's 45, but its best hour is 6 AM at 0 minutes and its Friday 6 AM cell medians 10 against DeConcini's 45. Driving in the morning, especially on a Monday, Mariposa is usually the better call. It also connects directly to I-19 with less stop-and-go.
• DeConcini wins on foot and after dark. It sits downtown on both sides, and it is the only Nogales crossing open past 10 PM.
• For commercial trucks: Mariposa, always. DeConcini does not handle most commercial traffic well.

We break the two ports down cell by cell in DeConcini vs Mariposa.

SENTRI and Ready Lane at DeConcini

DeConcini has SENTRI lane access. During the Wednesday and Sunday pre-dawn windows, standard-lane medians of 0 to 20 minutes make SENTRI savings essentially nil. On Monday, when the standard lane opens at 120 minutes and holds at 90 through the evening, SENTRI is the right call.

SENTRI is a Trusted Traveler Program. Membership requires an application, fee, background check, and in-person interview at an enrollment center. CBP publishes the official rules, fees, eligibility, and enrollment center list. Always verify current rules before applying.

Source: U.S. Customs and Border Protection

What this means for you

• Wednesday before dawn is the play. 1 AM medians 0 minutes and 2 to 3 AM hold 10, the lightest reliable window this port has. Sunday 3 to 5 AM is the runner-up at 10 to 20.
• Avoid Monday. It is the only day with a day median near 90 minutes, it opens at 120 before dawn, and it holds 90 from mid-afternoon to midnight. No other day at this port behaves that way.
• A weekend return through Nogales is still far easier than through Tijuana ports. San Ysidro's 30-day median of 120 minutes is nearly triple DeConcini's 45.
• For trucks or commercial: use Mariposa, not DeConcini.

How we compute these numbers

The Border Pulse cron pulls the official CBP wait time for DeConcini and stores a snapshot. The chart above is the median wait per (day of week, hour of day) cell across the last 30 days, in Arizona time (no DST). Because a 7 by 24 grid is finer than the refresh cadence can fill, each cell is estimated from a window centred on that hour, widened to at most two hours either side and only as far as it needs to go. Cells that still fall short of five observations are shown as "not enough data" instead of a number. We never pool across days, because the day of week is the pattern. The window is rolling, so these figures move as new snapshots arrive and older ones age out. The numbers quoted on this page were recomputed on July 27, 2026; the live chart above always reflects the current window. Median is more honest than mean for this data: a single 180-minute outlier can drag an average without telling you about the typical hour. Every number on this page comes from the CBP BWT feed, the canonical source. The live DeConcini page shows today's current wait alongside this 30-day pattern.

What to do with this

If you cross Nogales regularly, time-shift to Wednesday or Sunday before dawn whenever possible, and keep Monday off the table. If your schedule is fixed, use the chart above to identify the lightest hour on your specific day and confirm against today's live wait before leaving.