Traffic Predict
Best Time to Drive from Rancho Cucamonga to Diamond Bar
Right now (3:20 pm PST): about 21 minutes via I-10 West, usually 21 at this time.
Only 50% of this drive is measured by working traffic sensors right now. The rest is estimated from nearby sensors, typical speeds and street traffic, so times can be off. Why so few sensors work.
Typical drive time by departure time
| Leave | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mon | 18 | 24 | 27 | 28 | 25 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 19 |
| Tue | 18 | 24 | 29 | 30 | 24 | 23 | 22 | 21 | 21 | 21 | 21 | 22 | 21 | 21 | 20 | 20 | 19 |
| Wed | 18 | 24 | 28 | 29 | 26 | 22 | 23 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 20 | 20 | 19 |
| Thu | 18 | 24 | 28 | 27 | 24 | 23 | 21 | 21 | 21 | 22 | 21 | 22 | 22 | 22 | 20 | 20 | 19 |
| Fri | 18 | 20 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 22 | 22 | 23 | 20 | 20 | 19 |
| Sat | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 21 | 21 | 21 | 20 | 20 | 21 | 20 | 20 | 20 | 19 |
| Sun | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 20 | 20 | 19 |
About this drive
On weekdays the 18-mile drive from Rancho Cucamonga to Diamond Bar (via I-10 West) usually takes as little as 18 minutes and up to 30 minutes, when leaving around 7:30 am on Tuesdays. The fastest times to leave are before 5:30 am or after 9 pm. Midday (11 am to 2 pm) it takes about 21 minutes. On weekends it is slowest around 2 pm on Saturdays (21 minutes).
About 14 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 4 miles surface streets (6 to 9 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Rancho Cucamonga to central Diamond Bar along the route on the map. Starting or ending elsewhere in a big city can add or save several minutes.
Simulated from typical freeway speeds at each point of the drive for the time you would reach it, from every 5-minute reading we have recorded. We don't have sensors on surface streets yet, so the time on them is estimated from how congested the freeways around each end of the drive are at that time, in both directions: streets jam when the freeways do.
Questions
What is the best time to drive from Rancho Cucamonga to Diamond Bar?
On weekdays, leave before 5:30 am or after 9 pm. The drive usually takes about 18 minutes then, versus up to 30 minutes at the worst times.
How long does it take to drive from Rancho Cucamonga to Diamond Bar?
The 18-mile drive usually takes 18 to 30 minutes on weekdays, depending on when you leave, and about 21 minutes midday.
When is traffic worst from Rancho Cucamonga to Diamond Bar?
Leaving around 7:30 am on Tuesdays is usually slowest, about 30 minutes.
Freeways on this drive
I-10 West in Los Angeles (6 miles) · I-10 West in Inland Empire (5 miles) · SR-57 South in Los Angeles (3 miles)
Inland Empire traffic right now · Inland Empire traffic tomorrow · Los Angeles traffic right now · Los Angeles traffic tomorrow
More drives
Diamond Bar to Rancho Cucamonga (return trip) · Rancho Cucamonga to Los Angeles · Rancho Cucamonga to Santa Monica · Rancho Cucamonga to Pasadena · Rancho Cucamonga to Long Beach · Rancho Cucamonga to West Covina · Rancho Cucamonga to Burbank · Rancho Cucamonga to Glendale · Rancho Cucamonga to Santa Clarita · Rancho Cucamonga to Van Nuys · Rancho Cucamonga to Torrance · Rancho Cucamonga to LAX