Overview
- Patchy to dense fog develops before sunrise and typically lifts by late morning, bringing sunny, mild afternoons.
- PurpleAir sensors indicate pockets of "unhealthy" AQI from Sacramento through Stockton and Modesto into the Delta.
- Meteorologists urge people with severe asthma or allergies to avoid strenuous outdoor activity and keep windows closed during poor air episodes.
- Localized hazards include freezing fog near Truckee and reduced visibility around Santa Rosa, Marysville, Sacramento's Causeway, Stockton and Modesto in the morning hours.
- The setup is expected to continue for several days with dry weather and highs near the low 60s in valleys and foothills and near 50°F in the Sierra, with a more unsettled pattern projected to return later next week.