Citizen station CW0879CW0879
In a volunteer observer's own ground/3.6 mi away/19 ft/26 ft below here
temp, humidity, wind, precip, pressure
Weather/California/Montalvin Manor
Montalvin Manor, California
Community in Contra Costa County, California61°
94°/63°
Clear·
Feels like 61°·Light air 1 mph NE
Now. Montalvin Manor is 61° and clear at 4 AM. The dew point is 43°, so the air feels dry and comfortable. Light air from the northeast at 1 mph.
Today and tonight. It warms to about 94° by 5 PM. Tonight falls to about 63° by 8 AM, under a mostly clear sky. No rain is expected for the rest of the day. The sun is strong around midday: UV index 6, high. Unprotected skin can burn in under half an hour.
The week. The warmest day ahead is tomorrow, near 91°, and the coolest Monday, near 66°. The days ahead look dry.
The sky tonight. The sun sets at 6:30 PM. The Moon is a waxing crescent, 34% lit, and sets at 10:37 PM. The next full Moon is Sunday, Oct 25. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. The sky is forecast to stay clear: a good night to look up. The day is 11 hours 12 minutes long, 2 minutes shorter than yesterday.
0UV Low
12Air quality
66%Humidity
3%Cloud
Now
4:00 AM
61feels61
now, clear
Today
Oct 16
9463
UV 6
Sat
Oct 17
9163
UV 6
Sun
Oct 18
7458
12mph
Mon
Oct 19
6654
23%
13mph
Tue
Oct 20
6854
29%
Wed
Oct 21
7254
24%
Thu
Oct 22
7054
mostly clear day
61°
94°63°
91°63°
74°58°
66°54°
68°54°
72°54°
70°54°
As of 4:00 AM in Montalvin Manor, California.
Air quality
The air at Montalvin Manor
Index 12, good, led by ozone. Read at 3 AM from its reporting area, San Rafael (CA), 11 miles off.
12Good
- Fine particles (PM2.5)7Good-
- Ozone12Good-
The days ahead
Good each day through Tue Oct 20, led by ozone. Yesterday measured 44, good.
GoodModerate
- 44YesterdayOct 15
- 39TodayOct 16
- GoodSatOct 17
- GoodSunOct 18
- GoodMonOct 19
- GoodTueOct 20
Smoke, the next 44 hours
Little smoke near the ground through Sat 11 PM: the index from smoke stays at 6 or under.
Precipitation
What has fallen at Montalvin Manor
None in the last 3 days, to Fri 3 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 Montalvin Manor, the next 44 hours
Visibility stays 9 miles or more through Sat 11 PM, lowest 9 miles Sat 5 AM.
F
Now, today, and the week
On the radar over Montalvin Manor, CaliforniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture
Weather instrument stations by state
What is measuring near here
The 6 instruments nearest Montalvin Manor, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.5 miles away.
measured now4 instruments
Rank3,512of 4,465
Point Potrero, RichmondNDBC-PPXC1
At a river or reservoir gauge/6.6 mi away/-/- ft from here
temp, wind, gust, humidity, pressure
Napa CountyAPC
At an airfield/14.8 mi away/26 ft/19 ft below here
temp, wind, gust, visibility, precip, pressure
SR-12 - SR-160CF105
Beside a road/37.3 mi away/-6 ft/51 ft below here
temp, pavement temp, wind, visibility, precip
measured daily2 instruments
El Sobrante 1.6 SWCA-CC-52
In a volunteer observer's own ground/2.5 mi away/144 ft/99 ft above here
precip, snowfall, snow depth
Richmond - Waste Water PlantRICC1
At a cooperative observer's station/6.0 mi away/11 ft/34 ft below here
snowfall, snow depth, precip, high, low
Station report
The weather at Napa County, drawn
The nearest airport reporting now, 14.8 mi from Montalvin Manor, California. From its report of Oct 16, 2026, 3:54 AM local time: 3 of its 6 sheets.
The sky
No cloud below 12,000 ft; visibility 10 mi or more.
The air
51.0 F with a dew point of 41.0 F, 68 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,300 ft up.
The wind
Calm.
The full report of Napa County, in 6 sheets, each beside the Field Book plates that explain it
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 Montalvin Manor
The nearest places, each with its own forecast and the instruments nearest it.
- Tara Hillscommunity, 1 mi
- Bayviewcommunity, 1 mi
- Pinolecity, 2 mi
- Rollingwoodcommunity, 2 mi
- El Sobrantecommunity, 2 mi
- San Pablocity, 2 mi
- North Richmondcommunity, 3 mi
- Herculescity, 4 mi
- East Richmond Heightscommunity, 4 mi
- Richmondcity, 4 mi
- Rodeocommunity, 4 mi
- El Cerritocity, 6 mi