Big Basin State ParkBINC1
In a park or preserve/3.8 mi away/1,327 ft/165 ft below here
temp, wind, gust, humidity, pressure
Parks/California/Castle Rock State Park
Castle Rock State Park, California
State Park in San Mateo County, California* WHAT...Hot conditions with maximum temperatures in the mid-90s to near 105. Mild minimum temperatures and weak onshore flow will limit overnight relief. * WHERE...The East Bay and San Francisco Bay Shoreline, North Bay Interior Mountains and Valleys, The Santa Clara Valley and Eastern Hills, The Santa Cruz Mountains, Interior Monterey County and the Santa Lucia Range, Most of San Benito County and the Cholame Hills in Southeast Monterey County, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...Until 10 PM PDT Thursday. * IMPACTS...For the Heat Advisory, this level of heat affects anyone without effective cooling and/or adequate hydration. Impacts likely in some health systems, heat-sensitive industries and infrastructure.
Hydration is a critical piece to surviving the heat. Drink water, and if possible, take water to those who are vulnerable. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to the early morning or evening. Take action when you experience symptoms of heat exhaustion and/or heat stroke. Beat the heat and check the backseat! Do not leave young children or pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
68°
91°/64°
Mostly clear·
Feels like 68°·Calm 0 mph WNW
Alert. A Heat Advisory is in force for Castle Rock State Park until 10 PM Thursday. Read the alert in full, and see what it means in the Field Book.
Now. Castle Rock State Park is 68° and mostly clear at 1 AM. The dew point is 48°, so the air feels dry and comfortable. The air is calm.
Today and tonight. It warms to about 89° by 2 PM. Tonight falls to about 65° by 5 AM, under a mostly clear sky. No rain is expected for the rest of the day. The sun is strong around midday: UV index 7, high. Unprotected skin can burn in under half an hour. Air quality is moderate (index 54): fine for most people, though people unusually sensitive to air pollution may feel it outdoors.
The week. The warmest day ahead is tomorrow, near 89°, and the coolest Sunday, near 68°. The days ahead look dry.
The sky tonight. The sun sets at 6:45 PM. The Moon is a waning crescent, 15% lit, and rises at 4:02 AM after midnight. The next new Moon is Saturday, Oct 10. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The sky is forecast to stay clear: a good night to look up. The day is 11 hours 38 minutes long, 3 minutes shorter than yesterday.
0UV Low
54Air quality
52%Humidity
24%Cloud
Now
1:00 AM
68feels68
now, mostly clear
Today
Oct 6
9164
UV 7
Wed
Oct 7
8963
UV 7
Thu
Oct 8
8760
UV 7
Fri
Oct 9
8058
UV 7
Sat
Oct 10
7055
UV 7
Sun
Oct 11
6850
UV 7
Mon
Oct 12
7249
UV 7
68°
91°64°
89°63°
87°60°
80°58°
70°55°
68°50°
72°49°
As of 1:00 AM in Castle Rock State Park, California.
Air quality
The air at Castle Rock State Park
Index 54, moderate, led by fine particles. Read at 1 AM from its reporting area, San Jose (CA), 16 miles off.
54Moderate
- Fine particles (PM2.5)54Moderate18.4 mi
- Ozone38Good0 ppb18.4 mi
- Nitrogen dioxide29Good31.4 ppb18.4 mi
- Carbon monoxide-0.4 ppm18.4 mi
The days ahead
Highest 104, unhealthy for sensitive groups, today, led by ozone. Yesterday measured 59, moderate.
GoodModerateSensitive groups
- 59YesterdayOct 5
- 104TodayOct 6
- ModerateWedOct 7
- ModerateThuOct 8
- ModerateFriOct 9
- GoodSatOct 10
Smoke, the next 41 hours
Little smoke near the ground through Wed 5 PM: the index from smoke stays at 6 or under.
Precipitation
What has fallen at Castle Rock State Park
None in the last 3 days, to Tue 12 AM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.00in
- Last 3 days
- 0.00in
Visibility
How far you can see at Castle Rock State Park, the next 41 hours
Visibility stays 10 miles or more through Wed 5 PM.
F
Now, today, and the week
Weather instrument stations by state
Park
- Designation
- State Park
- Area
- 8.45 sq mi
- Height at its point
- 1,492 ft
- County
- San Mateo County
- State
- California
- Latitude
- 37.2224° N
- Longitude
- 122.1542° W
What is measuring near here
The 5 instruments nearest Castle Rock State Park, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.0 miles away.
measured now3 instruments
Citizen station CW1792CW1792
In a volunteer observer's own ground/8.1 mi away/374 ft/1,118 ft below here
temp, humidity, wind, precip, pressure
At an airfield/13.9 mi away/39 ft/1,453 ft below here
temp, wind, gust, visibility, precip, pressure
measured daily2 instruments
Boulder Creek 4.1 NCA-SZ-36
In a volunteer observer's own ground/2.0 mi away/984 ft/508 ft below here
precip, snowfall, snow depth
In a park or preserve/6.5 mi away/2,253 ft/761 ft above here
snowfall, snow depth, precip, high, low
What the snow tracker reads here
Every instrument in this state
-
Snow on the ground
Elsewhere in California
33 places, each with its own forecast and its own instruments.
Big Bear Mountainski areaBishopcityBridgeporttownChina Peakski areaDodge Ridgeski areaDonner PassfeatureFresnocityHeavenlysurveyed ski areaHomewoodski areaJune Mountainski areaKirkwoodsurveyed ski areaLos AngelescityMammoth LakestownMammoth Mountainsurveyed ski areaMount ShastafeatureMount Shasta CitycityMount Shasta Ski Parkski areaMount WhitneyfeatureMountain Highski areaNorthstarsurveyed ski areaPalisades Tahoesurveyed ski areaReddingcitySacramentocitySan DiegocitySan FranciscocitySierra NevadafeatureSierra-at-Tahoeski areaSnow Valleyski areaSouth Lake TahoecitySugar Bowlski areaSusanvillecityTruckeetownYosemitefeature
Near Castle Rock State Park
The nearest places, each with its own forecast and the instruments nearest it.
- Boulder Creekcommunity, 6 mi
- Saratogacity, 8 mi
- Brookdalecommunity, 9 mi
- Loma Marcommunity, 9 mi
- La Hondacommunity, 9 mi
- Cupertinocity, 9 mi
- Loyolacommunity, 9 mi
- Monte Serenocity, 9 mi
- Lompicocommunity, 10 mi
- Los Altos Hillstown, 10 mi
- Lexington Hillscommunity, 10 mi
- Los Gatostown, 11 mi