Saratoga, California (West Valley College Area)

Current Weather Conditions, Maps, and Forecasts

Thursday September 18, 2025; 9:50PM

DISCLAIMER: This is a hobby page. As such, the reliability of this information is not guaranteed, or warranted in any way, including, but not limited to, either for correctness or for fitness for any particular purpose. All risk for the use of this information is assumed by the readers and users of this page, including those who use the results extracted from either this page, or the scripts on which this page relies. Never base decisions that could affect life, property, livelihood, or anything else, on the information contained on this page, whether this information is locally derived or extracted from other locations on the Internet. In particular, the outputs and results shown for the air quality index (AQI) and the text forecasts are entirely the experimental work of an amateur hobbyist with no training in either weather forecasting or meterology. As such, these pages could very well contain or convey completely incorrect information (for example, the AQI reading is based on the last measurement of pollutants only, and is not an average over multiple hours!)  
Current Conditions
Realtime Single-sample US-EPA Air Quality Index
0 - GOOD

(Using 2024 US-EPA PM2.5 conversion)
Air quality is considered satisfactory, and air pollution poses little or no risk.
Outside Temperature 67.2°F
Wind Chill 67.2°F
Heat Index 67.3°F
Dew Point 60.5°F
Humidity 79%
Barometer 29.812 inHg
Barometer Trend (3 hours) 0.011 inHg
Wind 0 mph
Rain Rate 0.00 in/h
Garage Temperature 79.3°F
UV Index 0.0
ET 0.00 in
Radiation 0 W/m²
Using 2024 US-EPA PM2.5 conversion
Latest PM2.5 [AQI]0 μg/m³ [0]

 

Since Midnight
High Temperature
Low Temperature
85.4°F at 13:36:01
62.8°F at 07:25:09
High Heat Index
Low Wind Chill
85.8°F at 13:36:01
62.8°F at 07:25:09
High Humidity
Low Humidity
79% at 07:52:47
43% at 13:37:01
High Dewpoint
Low Dewpoint
62.9°F at 15:14:23
53.6°F at 05:26:45
High Barometer
Low Barometer
29.848 inHg at 11:34:03
29.774 inHg at 05:16:02
Today's Rain 0.00 in
High Rain Rate 0.00 in/h at 00:00:04
High Wind 8 mph from 348° (NNW) at 15:28:40
Average Wind 0 mph
RMS Wind 0 mph
Vector Average Speed
Vector Average Direction
0 mph
334°
High Garage Temperature
Low Garage Temperature
82.7°F at 00:00:04
76.0°F at 10:16:01
High UV
Low UV
4.0 at 12:27:29
0.0 at 00:00:04
High ET
Low ET
0.02 in at 13:00:00
0.00 in at 00:05:00
High Radiation
Low Radiation
1000 W/m² at 12:28:11
0 W/m² at 00:00:04
Using 2024 US-EPA PM2.5 conversion
High PM2.5 [AQI]

Low PM2.5 [AQI]
8.7068 μg/m³ [48]
 at 08:31:30
0.8366 μg/m³ [5]
 at 02:51:19

 

Rain Year (1-Oct start)
Rain Year Total 18.20 in

 

Local Radar Loop
Local Radar

Click image for a larger image

 

Regional Radar Loop
Regional Radar

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Hazard Map (from the NWS)
Regional Hazard Map

Click map for more details

 

Current Weather Outlook
Current Weather Outlook

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Low Temperature Outlook
Low Temperature Outlook

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High Temperature Outlook
High Temperature Outlook

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Santa Clara County Reservoirs
ALERT Reservoir Data

 

California Major Reservoirs
Major Reservoir Levels

 

PG&E Electrical Outage Map
PG&E Electrical Outage Map

 

California Rainfall Totals
NOAA/NWS CA/NV Rainfall totals

 

California Snowpack Levels
California Snowpack Information

 

CAL FIRE Incidents
CAL Fire Active Incidents

 

Weather Networks We Are On
AWEKAS CWOP MesoWest
Met Office (UK) Ambient Weather PWS Weather (HamWeather)
Southwestern Weather Network Weather Underground Weather Cloud
WindAlert (Weatherflow) PurpleAir

Weather Forecast

Forecast Created by Experimental Software Written By an Amateur With No Guarantee or Warranty or Promise of Accuracy Provided or Implied! Use at Your Own Risk! You Assume All Risk and Liability If You Use This Information in Any Way, For Any Purpose Whatsoever! See the Disclaimer Given Above!
raw forecast data generated on
Thu, 18 Sep 2025 21:10:02 -0700 (PDT)

Click here for an official National Weather Service forecast! NWS Disclaimer
 
Thursday
Night
A chance of light rain showers
Lo 62 °F
 Precp 32% 
Chance
Rain
Showers

 
Friday
A chance of light rain showers
Hi 84 °F
 Precp 27% 
Chance
Rain
Showers

Friday
Night
Mostly Clear
Lo 60 °F
 Precp 9% 
Mostly
Clear

 
Saturday
Mostly Sunny
Hi 84 °F
 Precp 11% 
Mostly
Sunny

Saturday
Night
Mostly Clear
Lo 59 °F
 Precp 3% 
Mostly
Clear

 
Sunday
Mostly Sunny
Hi 86 °F
 Precp 4% 
Mostly
Sunny

Sunday
Night
Mostly Clear
Lo 62 °F
 Precp 2% 
Mostly
Clear

 
Monday
Mostly Sunny
Hi 93 °F
 Precp 5% 
Mostly
Sunny

Thursday Night
 
A chance of light rain showers, with a low of 62. Mostly cloudy in the evening, with a bit of the overcast clearing, becoming partly cloudy after midnight. Expecting approximately 0.08 inches of rain, mostly after midnight. Chance of precipitation is 32%. Humidity 73% in the evening, rising to 87% after midnight. Winds are a light air, NW-ESE at 1-2 mph, gusting to 3 mph.
Friday
 
A chance of light rain showers, with a high of 84. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Expecting approximately 0.01 inches of rain, mostly in the morning. Chance of precipitation will be 27%. Humidity 87% in the morning, lowering to 58% by the afternoon. Winds will be a light breeze, SSW-NNW at 1-6 mph, gusting to a gentle breeze, 3-10 mph. Winds stronger in the afternoon.
Friday Night
 
Low of 60. Mostly clear in the evening, with incoming clouds making it partly cloudy after midnight. Chance of precipitation will be 9%. Humidity 64% in the evening, rising to 93% after midnight. Winds will be a light breeze, W-WNW at 1-6 mph, gusting to a gentle breeze, 2-10 mph. Winds weaker in the evening.
Saturday
 
High of 84. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Chance of precipitation will be 11%. Humidity 93% in the morning, lowering to 55% by the afternoon. Winds will be a light breeze, W-WNW at 1-6 mph, gusting to a gentle breeze, 2-12 mph. Winds stronger in the afternoon.
Saturday Night
 
Low of 59. Clear in the evening, with a few clouds later making it mostly clear after midnight. Chance of precipitation will be 3%. Humidity 57% in the evening, rising to 89% after midnight. Winds will be a light breeze, WNW-NW at 1-7 mph, gusting to a moderate breeze, 2-13 mph. Winds weaker in the evening.
Sunday
 
High of 86. Mostly sunny in the morning, with any clouds clearing to become sunny by the afternoon. Chance of precipitation will be 4%. Humidity 90% in the morning, lowering to 49% by the afternoon. Winds will be a light breeze, NW at 1-6 mph, gusting to a gentle breeze, 2-12 mph. Winds stronger in the afternoon.
Sunday Night
 
Low of 62. Clear in the evening, with a few clouds later making it mostly clear after midnight. Chance of precipitation will be 2%. Humidity 48% in the evening, rising to 72% after midnight. Winds will be a light breeze, NW at 1-6 mph, gusting to a gentle breeze, 2-12 mph. Winds weaker in the evening.
Monday
 
High of 93. Mostly sunny in the morning, with any clouds clearing to become sunny by the afternoon. Chance of precipitation will be 5%. Humidity 77% in the morning, lowering to 51% by the afternoon. Winds will be a light air, SE-NW at 1-2 mph, gusting to a light breeze, 2-5 mph. Winds stronger in the afternoon.
Monday Night
 
Low of 64. Mostly clear through the night. Chance of precipitation will be 13%. Humidity 41% in the evening, rising to 70% after midnight. Winds will be a light breeze, SSW-NW at 2-6 mph, gusting to a gentle breeze, 3-12 mph. Winds weaker in the evening.
Tuesday
 
A chance of light rain showers, with a high of 86. Partly cloudy through the day. Chance of precipitation will be 25%. Humidity 84% in the morning, lowering to 64% by the afternoon. Winds will be a light air, S-SSW at 2 mph, gusting to a light breeze, 3-6 mph.
Tuesday Night
 
Low of 62. Mostly clear in the evening, with incoming clouds making it partly cloudy after midnight. Chance of precipitation will be 15%. Humidity 56% in the evening, rising to 81% after midnight. Winds will be a light breeze, SSW-WSW at 2-6 mph, gusting to a gentle breeze, 6-12 mph. Winds weaker in the evening.
Wednesday
 
High of 82. Partly cloudy through the day. Chance of precipitation will be 9%. Humidity 90% in the morning, lowering to 69% by the afternoon. Winds will be a light air, SSW-WSW at 2-3 mph, gusting to a gentle breeze, 3-8 mph. Gusting winds stronger in the afternoon.
Wednesday Night
 
Low of 59. Mostly clear through the night. Chance of precipitation will be 4%. Humidity 58% in the evening, rising to 81% after midnight. Winds will be a light breeze, WNW-NW at 2-7 mph, gusting to a moderate breeze, 6-13 mph. Winds weaker in the evening.
Thursday
 
High of 82. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Chance of precipitation will be 8%. Humidity 86% in the morning, lowering to 68% by the afternoon. Winds will be a light air, WNW-NW at 2-3 mph, gusting to a gentle breeze, 3-8 mph. Gusting winds stronger in the afternoon.


The above Experimental Forecast used the National Weather Service's NDFD XML Feed
for Saratoga, CA
(37.263°N, 122.003°W, NWS Zone CAZ513, NWS County CAC085)



About this weather station:
Location
Latitude: 37° 15.75' N
Longitude: 122° 00.20' W
Altitude: 376 feet

This station uses a Vantage Pro2, controlled by 'WeeWX', an experimental weather software system written in Python. Weewx was designed to be simple, fast, and easy to understand by leveraging modern software concepts.

RSS feed

Smartphone formatted

WeeWX uptime: 1 day, 19 hours, 30 minutes
Server uptime: 1 day, 19 hours, 30 minutes
weewx v5.1.0

Today's Almanac
Sun
Start civil twilight: 06:26:05
Sunrise: 06:52:41
Transit: 13:01:56
Sunset: 19:10:35
End civil twilight: 19:37:08
Prev. Day Length:12:20:15
Curr. Day Length:12:17:54
Curr. Shorter by:00:02:21
Azimuth: 299.8°
Altitude: -31.2°
Right ascension: 176.8°
Declination: 1.4°
Equinox: 09/22/25 11:19:17
Solstice: 12/21/25 07:02:51
Moon
Rise: 03:36:08
Transit: 10:49:26
Set: 17:51:39
Duration Seen:14:16
Azimuth: 336.2°
Altitude: -35.4°
Right ascension: 148.6°
Declination: 14.0°
New moon: 09/21/25 12:54:03
Full moon: 10/06/25 20:47:33
Phase: Waning crescent
(7% full)
temperatures heatchill outside humidity rain wind barometer Hi Wind PM 2.5 Concentration Garage Wind Vector Radiation UV Index day rx percent