Best Time to Drive from Monrovia to Fontana

Right now (3:20 pm PST): about 68 minutes via I-210 East, usually 49 at this time.

Only 47% 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 Monrovia to Fontana 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	38	38	49	50	44	42	42	43	44	54	64	66	72	61	47	41	38
Tue	38	39	51	58	44	44	43	42	44	50	66	71	74	64	49	44	39
Wed	38	39	51	54	44	43	43	43	44	50	64	72	73	62	49	44	39
Thu	39	39	48	54	43	43	43	43	44	54	67	74	72	61	50	43	38
Fri	38	39	43	44	43	44	43	48	53	67	82	80	77	64	53	45	40
Sat	38	38	39	39	39	40	42	43	43	46	48	51	51	47	44	40	38
Sun	38	38	38	38	39	39	40	40	41	42	43	40	41	40	40	41	38

About this drive

On weekdays the 37-mile drive from Monrovia to Fontana (via I-210 East) usually takes as little as 37 minutes and up to 82 minutes, when leaving around 3 pm on Fridays. The fastest times to leave are before 6:30 am or after 9 pm. Midday (11 am to 2 pm) it takes about 47 minutes. On weekends it is slowest around 5 pm on Saturdays (51 minutes).

About 30 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 8 miles surface streets (11 to 29 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Monrovia to central Fontana 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 Monrovia to Fontana?

On weekdays, leave before 6:30 am or after 9 pm. The drive usually takes about 37 minutes then, versus up to 82 minutes at the worst times.

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

The 37-mile drive usually takes 37 to 82 minutes on weekdays, depending on when you leave, and about 47 minutes midday.

When is traffic worst from Monrovia to Fontana?

Leaving around 3 pm on Fridays is usually slowest, about 82 minutes.

Freeways on this drive

I-210 East in Los Angeles (18 miles) · I-210 East in Inland Empire (12 miles)

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

More drives

Fontana to Monrovia (return trip) · Monrovia to Los Angeles · Monrovia to Long Beach · Monrovia to Anaheim · Monrovia to Riverside · Monrovia to Santa Ana · Monrovia to Irvine · Monrovia to San Bernardino · Monrovia to Oxnard · Monrovia to Moreno Valley · Monrovia to Huntington Beach · Monrovia 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	38	38	49	50	44	42	42	43	44	54	64	66	72	61	47	41	38
Tue	38	39	51	58	44	44	43	42	44	50	66	71	74	64	49	44	39
Wed	38	39	51	54	44	43	43	43	44	50	64	72	73	62	49	44	39
Thu	39	39	48	54	43	43	43	43	44	54	67	74	72	61	50	43	38
Fri	38	39	43	44	43	44	43	48	53	67	82	80	77	64	53	45	40
Sat	38	38	39	39	39	40	42	43	43	46	48	51	51	47	44	40	38
Sun	38	38	38	38	39	39	40	40	41	42	43	40	41	40	40	41	38

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	38	38	49	50	44	42	42	43	44	54	64	66	72	61	47	41	38
Tue	38	39	51	58	44	44	43	42	44	50	66	71	74	64	49	44	39
Wed	38	39	51	54	44	43	43	43	44	50	64	72	73	62	49	44	39
Thu	39	39	48	54	43	43	43	43	44	54	67	74	72	61	50	43	38
Fri	38	39	43	44	43	44	43	48	53	67	82	80	77	64	53	45	40
Sat	38	38	39	39	39	40	42	43	43	46	48	51	51	47	44	40	38
Sun	38	38	38	38	39	39	40	40	41	42	43	40	41	40	40	41	38

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	38	38	49	50	44	42	42	43	44	54	64	66	72	61	47	41	38
Tue	38	39	51	58	44	44	43	42	44	50	66	71	74	64	49	44	39
Wed	38	39	51	54	44	43	43	43	44	50	64	72	73	62	49	44	39
Thu	39	39	48	54	43	43	43	43	44	54	67	74	72	61	50	43	38
Fri	38	39	43	44	43	44	43	48	53	67	82	80	77	64	53	45	40
Sat	38	38	39	39	39	40	42	43	43	46	48	51	51	47	44	40	38
Sun	38	38	38	38	39	39	40	40	41	42	43	40	41	40	40	41	38