U.S. Alerts  
El Dorado Weather Logo
U.S. Color IR Sat North America Color Background Satellite Thumb
Norcal Dual-Pol Radar Live Northern California Doppler Radar Thumbnail Image
W. Coast IR Satellite West Coast Infrared Satellite
Live Lightning Radar Placerville California Lightning Detection Radar Thumbnail Image
Live Streaming Webcam Placerville California Live Streaming WebCam Thumbnail Image
Local Wx Station Data Sacramento, Northern Sierra Nevada & the Motherlode Area Current Weather Conditions

San Luis Obispo County Alerts
Skywarn Logo
Noaa Logo
Noaa Logo 2
NOAA's National Weather Service
Each location shows all alerts on one page:
WARNINGS - WATCHES - ADVISORIES - STATEMENTS
Updates every 15 Minutes
Updated:August 17, 2026 3:45 pm PDT

Heat Advisory HEAT ADVISORY  
San Luis Obispo County

Effective: Mon, 8/17 6:13am Severity:  Moderate 
Updated: August 17, 2026 3:45 pm Urgency: Expected
Expires: Thu, 8/20 8:00pm Certainty: Likely

Areas Affected: Cuyama Valley - Santa Clarita Valley - Southern Salinas Valley - San Luis Obispo County Interior Valleys - San Luis Obispo County Mountains - Santa Ynez Mountains Western Range - Santa Barbara County Interior Mountains - Calabasas and Agoura Hills - Western San Fernando Valley - Eastern San Fernando Valley - Santa Susana Mountains - Southern Ventura County Mountains - Western San Gabriel Mountains and Highway 14 Corridor - Eastern San Gabriel Mountains - Los Angeles County San Gabriel Valley
 
Alert Details:
* WHAT...High temperatures of 92 to 105 expected, with most areas
seeing peak heat on Wednesday and Thursday. Low temperatures are
expected to range from the upper 60s to lower 70s at lower
elevations to the mid 70s to lower 80s in the foothills and
mountains.

* WHERE...A portion of southwest California.

* WHEN...From 10 AM Tuesday to 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses. Warmer than
normal low temperatures will add to the heat discomfort.

* ADDITIONAL DETAILS...The heat advisory may need to be extended into
Friday for portions of the forecast area, but there remains
considerable uncertainty at this time.

Information:
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.