Best Time to Drive from Ontario to Monrovia

Right now (5:49 pm PDT): about 39 minutes via I-210 West, usually 31 at this time.

Only 38% 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 Ontario to Monrovia 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	27	46	48	46	39	37	37	36	35	31	31	30	31	30	30	30	29
Tue	27	50	55	50	43	39	35	33	33	32	32	31	31	29	30	30	29
Wed	28	51	52	49	43	39	38	35	35	34	32	31	30	31	31	31	29
Thu	27	44	50	45	39	37	34	32	32	32	30	31	31	30	30	29	28
Fri	28	37	40	35	35	36	34	33	34	32	32	32	32	33	31	30	28
Sat	28	29	29	29	30	31	32	32	32	33	32	31	31	31	30	28	28
Sun	28	28	28	28	29	30	29	32	32	32	31	31	31	30	30	30	28

About this drive

On weekdays the 26-mile drive from Ontario to Monrovia (via I-210 West) usually takes as little as 27 minutes and up to 60 minutes, when leaving around 6:30 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 34 minutes. On weekends it is slowest around 2 pm on Saturdays (33 minutes).

About 18 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 8 miles surface streets (12 to 23 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Ontario to central Monrovia 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 Ontario to Monrovia?

On weekdays, leave before 6 am or after 7:30 pm. The drive usually takes about 27 minutes then, versus up to 60 minutes at the worst times.

How long does it take to drive from Ontario to Monrovia?

The 26-mile drive usually takes 27 to 60 minutes on weekdays, depending on when you leave, and about 34 minutes midday.

When is traffic worst from Ontario to Monrovia?

Leaving around 6:30 am on Tuesdays is usually slowest, about 60 minutes.

Freeways on this drive

I-210 West in Los Angeles (18 miles)

Inland Empire traffic right now · Inland Empire traffic tomorrow · Los Angeles traffic right now · Los Angeles traffic tomorrow

More drives

Monrovia to Ontario (return trip) · Ontario to Los Angeles · Ontario to Santa Monica · Ontario to Pasadena · Ontario to Long Beach · Ontario to West Covina · Ontario to Burbank · Ontario to Glendale · Ontario to Santa Clarita · Ontario to Van Nuys · Ontario to Torrance · Ontario to LAX

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	27	46	48	46	39	37	37	36	35	31	31	30	31	30	30	30	29
Tue	27	50	55	50	43	39	35	33	33	32	32	31	31	29	30	30	29
Wed	28	51	52	49	43	39	38	35	35	34	32	31	30	31	31	31	29
Thu	27	44	50	45	39	37	34	32	32	32	30	31	31	30	30	29	28
Fri	28	37	40	35	35	36	34	33	34	32	32	32	32	33	31	30	28
Sat	28	29	29	29	30	31	32	32	32	33	32	31	31	31	30	28	28
Sun	28	28	28	28	29	30	29	32	32	32	31	31	31	30	30	30	28

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	27	46	48	46	39	37	37	36	35	31	31	30	31	30	30	30	29
Tue	27	50	55	50	43	39	35	33	33	32	32	31	31	29	30	30	29
Wed	28	51	52	49	43	39	38	35	35	34	32	31	30	31	31	31	29
Thu	27	44	50	45	39	37	34	32	32	32	30	31	31	30	30	29	28
Fri	28	37	40	35	35	36	34	33	34	32	32	32	32	33	31	30	28
Sat	28	29	29	29	30	31	32	32	32	33	32	31	31	31	30	28	28
Sun	28	28	28	28	29	30	29	32	32	32	31	31	31	30	30	30	28

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	27	46	48	46	39	37	37	36	35	31	31	30	31	30	30	30	29
Tue	27	50	55	50	43	39	35	33	33	32	32	31	31	29	30	30	29
Wed	28	51	52	49	43	39	38	35	35	34	32	31	30	31	31	31	29
Thu	27	44	50	45	39	37	34	32	32	32	30	31	31	30	30	29	28
Fri	28	37	40	35	35	36	34	33	34	32	32	32	32	33	31	30	28
Sat	28	29	29	29	30	31	32	32	32	33	32	31	31	31	30	28	28
Sun	28	28	28	28	29	30	29	32	32	32	31	31	31	30	30	30	28