Citizen station DW3588DW3588
In a volunteer observer's own ground/2.1 mi away/185 ft/109 ft below here
temp, humidity, wind, precip, pressure
Parks/California/Marsh Creek State Park
Marsh Creek State Park, California
State Park in Contra Costa 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...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.
85°
99°/71°
Clear·
Feels like 84°·Light breeze 4 mph SW
Alert. A Heat Advisory is in force for Marsh Creek State Park until 10 PM Thursday. Read the alert in full, and see what it means in the Field Book.
Now. Marsh Creek State Park is 85° and clear at 10 PM. The dew point is 49°, so the air feels dry and comfortable. Light breeze from the southwest at 4 mph.
Today and tonight. Tonight falls to about 75° by 7 AM, under a mostly clear sky. No rain is expected for the rest of the day.
The week. The warmest day ahead is Wednesday, near 98°, and the coolest Sunday, near 76°. The days ahead look dry. The windiest day is Saturday, with wind to 22 mph. Wednesday is hot, 98°: heat is a danger to anyone outdoors for long.
The sky now. The Moon is a waning crescent, 23% lit, and rises at 2:48 AM after midnight. The next new Moon is Saturday, Oct 10. Look for Saturn, bright in the 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 39 minutes long, 2 minutes shorter than yesterday.
0UV Low
47Air quality
36%Humidity
1%Cloud
Now
10:00 PM
85feels84
now, clear
Today
Oct 5
9971
clear day
Wed
Oct 7
9872
UV 7
Thu
Oct 8
9670
UV 7
Fri
Oct 9
9070
UV 7
Sat
Oct 10
7965
22mph
UV 7
Sun
Oct 11
7657
14mph
UV 6
Mon
Oct 12
7757
UV 6
85°
99°71°
98°72°
96°70°
90°70°
79°65°
76°57°
77°57°
As of 10:00 PM in Marsh Creek State Park, California.
Air quality
The air at Marsh Creek State Park
Index 47, good, led by ozone. Read at 9 PM from its reporting area, Livermore (CA), 14 miles off.
47Good
- Fine particles (PM2.5)24Good-
- Ozone47Good35 ppb10.5 mi
- Nitrogen dioxide3Good3.4 ppb10.5 mi
- Sulfur dioxide1Good1.1 ppb10.5 mi
- Carbon monoxide-0.3 ppm10.5 mi
The days ahead
Highest 101, unhealthy for sensitive groups, today, led by ozone. Yesterday measured 46, good.
GoodModerateSensitive groups
- 46YesterdayOct 4
- 101TodayOct 5
- 97TueOct 6
- ModerateWedOct 7
- ModerateThuOct 8
- ModerateFriOct 9
- GoodSatOct 10
Smoke, the next 44 hours
Little smoke near the ground through Wed 5 PM: the index from smoke stays at 22 or under.
Precipitation
What has fallen at Marsh Creek State Park
None in the last 3 days, to Mon 9 PM. 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 Marsh Creek State Park, the next 44 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
- 5.72 sq mi
- Height at its point
- 294 ft
- County
- Contra Costa County
- State
- California
- Latitude
- 37.8819° N
- Longitude
- 121.7510° W
What is measuring near here
The 6 instruments nearest Marsh Creek State Park, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.9 miles away.
measured now4 instruments
Mallory Ridge RAWSLVMC1
A remote fire weather station/4.7 mi away/2,080 ft/1,786 ft above here
temp, wind, gust, humidity, pressure
ByronC83
At an airfield/7.9 mi away/52 ft/242 ft below here
temp, wind, gust, visibility, precip, pressure
I-580 - I-205CF133
Beside a road/13.8 mi away/301 ft/7 ft above here
temp, pavement temp, wind, visibility, precip
measured daily2 instruments
Brentwood 2.5 SSWCA-CC-36
In a volunteer observer's own ground/1.9 mi away/182 ft/112 ft below here
precip, snowfall, snow depth
At a cooperative observer's station/9.8 mi away/3,102 ft/2,808 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 Marsh Creek State Park
The nearest places, each with its own forecast and the instruments nearest it.
- Brentwoodcity, 4 mi
- Byroncommunity, 6 mi
- Knightsencommunity, 8 mi
- Oakleycity, 8 mi
- Discovery Baycommunity, 8 mi
- Antiochcity, 8 mi
- Camino Tassajaracommunity, 9 mi
- Blackhawkcommunity, 10 mi
- Claytoncity, 11 mi
- Bethel Islandcommunity, 12 mi
- Diablocommunity, 12 mi
- Pittsburgcity, 12 mi
Parks near Marsh Creek State Park
- Mount Diablo State Park8 mi
- Bethany Reservoir State Recreation Area10 mi
- Franks Tract State Recreation Area13 mi
- Eugene O'Neill National Historic Site16 mi
- Brannan Island State Recreation Area17 mi
- Port Chicago Naval Magazine National Memorial19 mi
- John Muir National Historic Site22 mi
- Benicia Capitol State Historic Park25 mi