Best Time to Drive from Diamond Bar to Compton

Right now (5:50 pm PDT): about 48 minutes via SR-91 West and SR-57 South, usually 38 at this time.

Only 44% 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

Minutes from Diamond Bar to Compton by day and time you leave (local time)
Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	32	36	43	44	41	38	37	38	37	39	43	41	42	38	34	33	32
Tue	32	42	53	52	47	42	42	41	40	41	47	49	50	44	35	33	33
Wed	32	41	52	51	46	43	40	41	39	42	47	50	53	48	37	34	33
Thu	33	40	50	50	45	40	41	40	41	42	47	49	51	46	36	33	33
Fri	32	37	44	44	42	40	40	40	42	47	49	51	51	47	38	34	33
Sat	33	33	34	34	34	36	37	38	39	40	40	41	42	39	36	34	33
Sun	33	33	33	33	33	34	35	36	36	37	37	37	36	35	35	35	33

About this drive

On weekdays the 36-mile drive from Diamond Bar to Compton (via SR-91 West and SR-57 South) usually takes as little as 32 minutes and up to 55 minutes, when leaving around 7:30 am on Tuesdays. The fastest times to leave are before 6 am or after 7:30 pm. Midday (11 am to 2 pm) it takes about 40 minutes. On weekends it is slowest around 5 pm on Saturdays (42 minutes).

About 34 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 2 miles surface streets (3 to 7 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Diamond Bar to central Compton 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 Diamond Bar to Compton?

On weekdays, leave before 6 am or after 7:30 pm. The drive usually takes about 32 minutes then, versus up to 55 minutes at the worst times.

How long does it take to drive from Diamond Bar to Compton?

The 36-mile drive usually takes 32 to 55 minutes on weekdays, depending on when you leave, and about 40 minutes midday.

When is traffic worst from Diamond Bar to Compton?

Leaving around 7:30 am on Tuesdays is usually slowest, about 55 minutes.

Freeways on this drive

SR-91 West in Orange County (14 miles) · SR-57 South in Orange County (7 miles) · SR-91 West in Los Angeles (6 miles) · SR-57 South in Los Angeles (5 miles) · SR-60 West in Los Angeles (1.4 miles)

Los Angeles traffic right now · Los Angeles traffic tomorrow

More drives

Compton to Diamond Bar (return trip) · Diamond Bar to Los Angeles · Diamond Bar to Long Beach · Diamond Bar to Anaheim · Diamond Bar to Riverside · Diamond Bar to Santa Ana · Diamond Bar to Irvine · Diamond Bar to San Bernardino · Diamond Bar to Fontana · Diamond Bar to Moreno Valley · Diamond Bar to Huntington Beach · Diamond Bar to Glendale

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	32	36	43	44	41	38	37	38	37	39	43	41	42	38	34	33	32
Tue	32	42	53	52	47	42	42	41	40	41	47	49	50	44	35	33	33
Wed	32	41	52	51	46	43	40	41	39	42	47	50	53	48	37	34	33
Thu	33	40	50	50	45	40	41	40	41	42	47	49	51	46	36	33	33
Fri	32	37	44	44	42	40	40	40	42	47	49	51	51	47	38	34	33
Sat	33	33	34	34	34	36	37	38	39	40	40	41	42	39	36	34	33
Sun	33	33	33	33	33	34	35	36	36	37	37	37	36	35	35	35	33

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	32	36	43	44	41	38	37	38	37	39	43	41	42	38	34	33	32
Tue	32	42	53	52	47	42	42	41	40	41	47	49	50	44	35	33	33
Wed	32	41	52	51	46	43	40	41	39	42	47	50	53	48	37	34	33
Thu	33	40	50	50	45	40	41	40	41	42	47	49	51	46	36	33	33
Fri	32	37	44	44	42	40	40	40	42	47	49	51	51	47	38	34	33
Sat	33	33	34	34	34	36	37	38	39	40	40	41	42	39	36	34	33
Sun	33	33	33	33	33	34	35	36	36	37	37	37	36	35	35	35	33

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	32	36	43	44	41	38	37	38	37	39	43	41	42	38	34	33	32
Tue	32	42	53	52	47	42	42	41	40	41	47	49	50	44	35	33	33
Wed	32	41	52	51	46	43	40	41	39	42	47	50	53	48	37	34	33
Thu	33	40	50	50	45	40	41	40	41	42	47	49	51	46	36	33	33
Fri	32	37	44	44	42	40	40	40	42	47	49	51	51	47	38	34	33
Sat	33	33	34	34	34	36	37	38	39	40	40	41	42	39	36	34	33
Sun	33	33	33	33	33	34	35	36	36	37	37	37	36	35	35	35	33