Northern California forecast: Dense Fog Advisory for the Valley on Sunday
Dense fog is widespread across the Valley Sunday morning and freezing fog is present in Truckee, but skies are expected to clear for the afternoon.
KELLY CURRAN TRACKING IT ALL FOR US. AND IT’S THE FOG AGAIN TODAY. THAT IS THE BIG STORY. SO THIS IS A LIVE LOOK OUTSIDE FROM SUTTER HEALTH BALLPARK. I KNOW YOU’RE JUST GOING TO HAVE TO TRUST ME. ALTHOUGH YOU CAN KIND OF MAKE OUT THE SIGN HERE IN THE STADIUM. THAT’S KIND OF A LITTLE BIT. AND MAYBE A TARP THERE DOWN THE BOTTOM. THAT’S IT. I KNOW THE FOG IS SO THICK, IT’S REALLY HARD TO SEE. IT’S 43 DEGREES RIGHT NOW IN SACRAMENTO. RELATIVE HUMIDITY 100%. THE AIR IS COMPLETELY SATURATED. WINDS WEST SOUTHWEST JUST FIVE MILES PER HOUR. NOW, THE DENSE FOG ADVISORY IS IN PLACE FOR EVERYONE SHADED IN THE BLUE. NOTICE THAT IT IS EXTENDED A LITTLE BIT FURTHER NORTH THAN IT WAS YESTERDAY. SO YUBA CITY, YOU ARE NOW INCLUDED IN THIS. THIS GOES THROUGH NOON TODAY. SO A LITTLE BIT LATER THAN YESTERDAY AS WELL. VISIBILITY REDUCED TO A QUARTER MILE OR LESS. YOU WANT TO DRIVE SLOWLY. MAKE SURE YOU’RE USING YOUR LOW BEAM HEADLIGHTS EVEN AFTER THE SUN COMES UP. IT’S SO THAT YOU CAN. OTHER DRIVERS CAN SEE YOU. NOW LET’S TALK ABOUT THIS FOG. SO WHERE WE’RE SEEING THE MOST DENSE FOG AROUND MARYSVILLE, LINCOLN, SACRAMENTO INTERNATIONAL AND EXECUTIVE AIRPORT DAVIS IS SEEING IT AS WELL. MCCLELLAN. LITTLE BIT. PARTS OF RANCHO CORDOVA, BUT NOT ALL OF IT. FAIRFIELD. STOCKTON. MODESTO. ALSO SEEING A QUARTER MILE OR LESS VISIBILITY. TRACY. IT’S ACTUALLY IMPROVING WAS DOWN TO A QUARTER MILE EARLIER. NOW WE’RE AT THREE MILES. BUT NOTICE YOU HEAD UP INTO THE SIERRA. IT IS SUNSHINE. AND THAT’S GOING TO BE THE CASE AS YOU’RE HEADING UP INTO THE FOOTHILLS THERE AS WELL. FOOTHILLS AND THE SIERRA. NOW, WE DO HAVE SOME FOG OR CLOUDS MOVING OVERHEAD. WE’RE GOING TO SEE THOSE THROUGHOUT THE MORNING. A LITTLE BIT MORE SUNSHINE LATER IN THE DAY. SO WHILE THE SUN IS COMING UP TO FOGGY SKIES HERE IN THE VALLEY FOOTHILLS IN THE SIERRA, SEEING A FEW CLOUDS AROUND. BUT AT LEAST YOU’RE NOT DEALING WITH THE FOG. HIGH PRESSURE IS STILL IN CONTROL. THAT’S GOING TO BE THE CASE AS WE HEAD THROUGHOUT MOST OF THE WEEK THIS WEEK, WHICH DOES MEAN THAT WE’RE GOING TO CONTINUE TO SEE AREAS OF MORNING FOG. WE’RE GOING TO SEE STAGNANT AIR, VERY LIGHT WINDS. WE’RE SEEING A FEW CLOUDS AROUND AS WELL. AND IT’S REALLY GOING TO BE THE CASE THROUGHOUT THURSDAY. THEN WE’RE GOING TO START SEEING THINGS CHANGE. THAT HIGH MOVES OUT. LOW PRESSURE AT LEAST BRIEFLY TAKING OVER FRIDAY. ANOTHER ROUND OF HIGH PRESSURE MOVING IN FOR THE WEEKEND. AND THEN NEXT WEEK. WE’RE HOPEFUL HERE. WE’VE GOT A LOW PRESSURE SYSTEM MOVING TOWARD US THAT MAYBE COULD BRING US SOME RAIN CHANCES. IT’S STILL A LONG WAY OUT SO THINGS COULD CHANGE, BUT IT IS SOMETHING WE’RE GOING TO BE KEEPING A CLOSE EYE ON BECAUSE CERTAINLY WE NEED THAT RAIN. NOW LET’S TAKE A LOOK AT THE SEVEN DAY FORECAST. SO FOR TODAY YES. AREAS OF DENSE FOG AGAIN IN THE MORNING. BUT A NICE AFTERNOON WITH TEMPERATURES SIMILAR TO YESTERDAY. UPPER 50S AND LOW 60S FOR TOMORROW. MARTIN LUTHER KING JUNIOR DAY A LOT OF PEOPLE HAVE THE DAY OFF TOMORROW. IT IS GOING TO BE FOGGY, START IN THE VALLEY, BUT SUNSHINE IN THE AFTERNOON. IT’S GOING TO BE A VERY NICE DAY IN THE FOOTHILLS AND IN THE SIERRA. SO IF YOU’RE LOOKING FOR SOMETHING FUN TO DO ON YOUR DAY OFF, AND THEN AS WE HEAD THROUGHOUT THE REST OF THE WEEK, NOTICE THAT THE FORECAST IS PRETTY CONSISTENT. WE WILL SEE AREAS OF FOG IN THE MORNING, BUT SUNSHINE IN THE AFTERNOON AND THE TEMPERATURES HOVERING JUST A LITTLE BIT ABOVE NORMAL. BUT AT THIS POINT IT’S BEEN DRY FOR A WHILE. OTHER THAN OF COURSE, MIST AND DRIZZLE WITH FOG, SO WE COULD USE A LITTLE RAIN A LITTLE EASIER TO SEE O
Northern California forecast: Dense Fog Advisory for the Valley on Sunday
Dense fog is widespread across the Valley Sunday morning and freezing fog is present in Truckee, but skies are expected to clear for the afternoon.
Updated: 7:27 AM PST Jan 18, 2026
A dense fog advisory is in place for the Valley until noon on Sunday.Widespread, dense fog is present in the Valley again Sunday morning and will linger though midday, after which we will have clearing skies and temperatures similar to yesterday.Air Quality in the Valley remains at “unhealthy” levels for sensitive groups, such as those with lung ailments like COPD and asthma, the elderly, and young children. Even healthy adults should limit strenuous outdoor activity, opting for indoor workouts instead. Partly to mostly sunny skies are expected in the Foothills and Sierra.Fog will develop in the Valley again Sunday evening, lingering through midday on Monday. That will be the case each day through at least Thursday.Dry and quiet conditions, other than the fog, continue throughout the 7-day forecast.
SACRAMENTO, Calif. —
A dense fog advisory is in place for the Valley until noon on Sunday.
Widespread, dense fog is present in the Valley again Sunday morning and will linger though midday, after which we will have clearing skies and temperatures similar to yesterday.
Air Quality in the Valley remains at “unhealthy” levels for sensitive groups, such as those with lung ailments like COPD and asthma, the elderly, and young children. Even healthy adults should limit strenuous outdoor activity, opting for indoor workouts instead.
Partly to mostly sunny skies are expected in the Foothills and Sierra.
Fog will develop in the Valley again Sunday evening, lingering through midday on Monday. That will be the case each day through at least Thursday.
Dry and quiet conditions, other than the fog, continue throughout the 7-day forecast.