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405
Interstate 405 · loop off I-5

I-405 weather

A loop off I-5 near Los Angeles, CA, Irvine, CA to Los Angeles, CA: 103 miles in all, on 3 separate roads that share the number, 3 states.

103Miles (all roads)
3States
80Miles under an alert now

The states, in order

along the road

The weather on I-405 now

NDFD · Friday, October 2

At 8 p.m. PDT, temperatures on I-405 run from 58°F near Lynnwood to 87°F near Santa Clarita, under mostly clear skies on average. Wind is light, gusting no higher than 10 mph anywhere on the road. No measurable rain is forecast on it in the next 24 hours.

Under an NWS alert now: Extreme Heat Warning · 80 mi

Read from the National Weather Service’s NDFD forecast grid at 2.5 km, sampled every eight miles along the pavement (run 10/03 01Z). The page is rebuilt every hour.

The 3 roads numbered I-405

now and the next 24 hours
WhereStateNowSkyWindNext 24 hours
Los Angeles, CAIrvine → Los Angeles · 71 miCA87°Clear6 mphDry
Seattle, WASeattle → Lynnwood · 29 miWA62°Mostly cloudy2 mphDry
Portland, ORPortland → Vancouver · 3 miOR70°Mostly clear3 mphDry

Parent route

5
I-5
San Diego → Blaine

Other loops and spurs of I-5

105
I-105
Los Angeles, CA
205
I-205
Portland, OR
505
I-505
Sacramento, CA
605
I-605
Los Angeles, CA
705
I-705
spur off I-5
805
I-805
San Diego, CA