Best Time to Drive from San Dimas to Ontario

Right now (7:04 pm PDT): about 17 minutes via I-10 East and SR-57 South, usually 17 at this time.

Only 37% 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.

About this drive

On weekdays the 15-mile drive from San Dimas to Ontario (via I-10 East and SR-57 South) usually takes as little as 16 minutes and up to 30 minutes, when leaving around 4 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 20 minutes. On weekends it is slowest around 4:30 pm on Saturdays (20 minutes).

About 11 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 4 miles surface streets (6 to 8 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central San Dimas to central Ontario 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 San Dimas to Ontario?

On weekdays, leave before 6:30 am or after 9 pm. The drive usually takes about 16 minutes then, versus up to 30 minutes at the worst times.

How long does it take to drive from San Dimas to Ontario?

The 15-mile drive usually takes 16 to 30 minutes on weekdays, depending on when you leave, and about 20 minutes midday.

When is traffic worst from San Dimas to Ontario?

Leaving around 4 pm on Fridays is usually slowest, about 30 minutes.

Freeways on this drive

I-10 East in Los Angeles (5 miles) · SR-57 South in Los Angeles (3 miles) · I-10 East in Inland Empire (3 miles)

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

More drives

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

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