Sacramento

Wall of Fog Turns Sacramento’s Sunday Drive Into a Slow-Motion Crawl

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Published on February 01, 2026
Wall of Fog Turns Sacramento’s Sunday Drive Into a Slow-Motion CrawlSource: Google Street View

Dense fog covered much of the Sacramento Valley early Sunday, reducing visibility to about a quarter mile in some areas. Temperatures were in the low 40s, dipping near 39°F around the airport. The fog slowed the morning commute and may return overnight into Monday, according to the National Weather Service.

Dense Fog Advisory

The National Weather Service has a Dense Fog Advisory in effect from 11 p.m. Saturday through noon Sunday for the central and southern Sacramento Valley, the Delta and the northern San Joaquin Valley, where visibilities could drop below a quarter mile. The advisory notes that low visibility may make driving hazardous and urges extra caution on state highways and local roads. See the National Weather Service Sacramento for the full advisory and safety tips.

Travel And Commute Tips

If you hit headlight-only visibility, slow down, flip on low-beam headlights and leave more room between you and the car ahead. Avoid pulling onto freeway shoulders unless absolutely necessary. Smaller airports and some surface streets may see IFR or LIFR conditions, which can delay flights and slow traffic in neighborhoods. For background on this repeating fog pattern and additional driving tips, see this repeating fog pattern in our earlier coverage, as per the National Weather Service.

What To Expect This Week

The fog should clear by late morning, with highs around 62°F and light winds. Patchy fog may return overnight into Monday and on some mornings after. The rest of the week looks dry and mild, with highs in the low to mid-60s. If you’re traveling early, check for updates, especially in the Delta and southern Valley.