Saratoga, California (West Valley College Area)

Current Weather Conditions, Maps, and Forecasts

Tuesday October 20, 2026; 3:15AM

DISCLAIMER: This is a hobby page. As such, the reliability of this information is not guaranteed, or warrantied 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	51.5°F
Wind Chill	51.5°F
Heat Index	50.1°F
Dew Point	45.5°F
Humidity	80%
Barometer	29.896 inHg
Barometer Trend (3 hours)	0.000 inHg
Wind	0 mph
Rain Rate	0.00 in/h
Garage Temperature	71.0°F
UV Index	0.0
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	54.3°F at 00:21:23 51.4°F at 02:44:14
High Heat Index Low Wind Chill	53.0°F at 00:21:23 51.4°F at 02:44:14
High Humidity Low Humidity	81% at 02:41:26 76% at 00:23:55
High Dewpoint Low Dewpoint	47.2°F at 00:21:23 45.5°F at 02:39:36
High Barometer Low Barometer	29.907 inHg at 01:01:04 29.895 inHg at 00:20:04
Today's Rain	0.00 in
High Rain Rate	0.00 in/h at 00:00:02
High Wind	0 mph
Average Wind	0 mph
RMS Wind	0 mph
Vector Average Speed Vector Average Direction	0 mph N/A
High Garage Temperature Low Garage Temperature	73.1°F at 00:00:02 71.0°F at 03:12:02
High UV Low UV	0.0 at 00:00:02 0.0 at 00:00:02
High Radiation Low Radiation	0 W/m² at 00:00:02 0 W/m² at 00:00:02

Rain Year (1-Oct start)

Rain Year Total

0.00 in

Local Radar Loop

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Regional Radar Loop

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Hazard Map (from the NWS)

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Current Weather Outlook

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Low Temperature Outlook

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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

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

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
Tue, 20 Oct 2026 02:30:00 -0700 (PDT)

Click here for an official National Weather Service forecast! NWS Disclaimer

Monday
Night
Mostly Cloudy

Lo 48 °F
Precp 2%
Mostly
Cloudy

Tuesday
Mostly Cloudy

Hi 73 °F
Precp 1%
Mostly
Cloudy

Tuesday
Night
A chance of light rain showers

Lo 51 °F
Precp 32%
Chance
Rain
Showers

Wednesday
A chance of light rain showers, with patchy fog

Hi 71 °F
Precp 63%
Chance
Rain
Showers

Wednesday
Night
Light rain showers likely, with patchy fog

Lo 53 °F
Precp 58%
Rain
Showers
Likely

Thursday
A chance of light rain showers, with patchy fog

Hi 69 °F
Precp 48%
Chance
Rain
Showers

Thursday
Night
Patchy fog

Lo 48 °F
Precp 3%
Patchy
Fog

Friday
Mostly Sunny

Hi 73 °F
Precp 0%
Mostly
Sunny

Monday Night	Low of 48. Mostly cloudy in the evening, with a bit of the overcast clearing, becoming partly cloudy after midnight. Chance of precipitation is 2%. Humidity 86% in the evening, rising to 93% after midnight. Winds are a light air, SSE at 1 mph, gusting to 2 mph.
Tuesday	High of 73. Partly cloudy through the day. Chance of precipitation will be 1%. Humidity 92% in the morning, lowering to 53% by the afternoon. Winds will be a light breeze, N at 1-5 mph, gusting to a gentle breeze, 2-10 mph. Winds stronger in the afternoon.
Tuesday Night	A chance of light rain showers, with a low of 51. Partly cloudy in the evening, with full overcast conditions arriving, becoming cloudy after midnight. Chance of precipitation will be 32%. Humidity 55% in the evening, rising to 89% after midnight. Winds will be a light air, SSE-NNW at 1-3 mph, gusting to a light breeze, 2-7 mph. Winds weaker in the evening.
Wednesday	A chance of light rain showers, with patchy fog, with a high of 71. Cloudy in the morning, with a bit of the cloudiness clearing, becoming mostly cloudy by the afternoon. Expecting approximately 0.06 inches of rain, mostly in the afternoon. Chance of precipitation will be 63%. Humidity 90% in the morning, lowering to 66% by the afternoon. Winds will be a light air, S-W at 1-3 mph, gusting to a gentle breeze, 3-9 mph. Winds stronger in the afternoon.
Wednesday Night	Light rain showers likely, with patchy fog, with a low of 53. Mostly cloudy through the night. Expecting approximately 0.04 inches of rain, mostly after midnight. Chance of precipitation will be 58%. Humidity 73% in the evening, rising to 97% after midnight. Winds will be a light air, NW-NNW at 1 mph, gusting to a light breeze, 2-7 mph. Gusting winds stronger in the evening.
Thursday	A chance of light rain showers, with patchy fog, with a high of 69. Mostly cloudy through the day. Expecting approximately 0.01 inches of rain, mostly in the morning. Chance of precipitation will be 48%. Humidity 100% in the morning, lowering to 82% by the afternoon. Winds will be a light breeze, W-WNW at 1-7 mph, gusting to a moderate breeze, 2-15 mph. Winds stronger in the afternoon.
Thursday Night	Patchy fog, with a low of 48. Partly cloudy through the night. Chance of precipitation will be 3%. Humidity 78% in the evening, rising to 93% after midnight. Winds will be a light breeze, WNW at 5-7 mph, gusting to a moderate breeze, 7-14 mph. Gusting winds stronger in the evening.
Friday	High of 73. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Humidity 100% in the morning, lowering to 81% by the afternoon. Winds will be a light air, W-N at 1-2 mph, gusting to a light breeze, 3-7 mph. Winds stronger in the afternoon.
Friday Night	Low of 48. Clear through the night. Humidity 59% in the evening, rising to 81% after midnight. Winds will be a light breeze, NNW at 2-7 mph, gusting to a moderate breeze, 3-14 mph. Winds weaker in the evening.
Saturday	High of 77. Mostly sunny through the day. Humidity 79% in the morning, lowering to 55% by the afternoon. Winds will be a light air, N-ENE at 1 mph, gusting to a light breeze, 2-5 mph. Gusting winds stronger in the afternoon.
Saturday Night	Low of 50. Mostly clear through the night. Chance of precipitation will be 3%. Humidity 42% in the evening, rising to 69% after midnight. Winds will be a light air, NW-N at 1-3 mph, gusting to a gentle breeze, 2-8 mph. Winds weaker in the evening.
Sunday	High of 77. Partly cloudy through the day. Chance of precipitation will be 3%. Humidity 77% in the morning, lowering to 61% by the afternoon. Winds will be a light air, NNW-NE at 1-2 mph, gusting to a light breeze, 2-6 mph. Winds stronger in the afternoon.
Sunday Night	Low of 50. Mostly clear through the night. Chance of precipitation will be 4%. Humidity 43% in the evening, rising to 66% after midnight. Winds will be a light air, NW-NNW at 3 mph, gusting to a gentle breeze, 3-9 mph. Gusting winds stronger in the evening.
Monday	High of 75. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Chance of precipitation will be 3%. Humidity 79% in the morning, lowering to 60% by the afternoon. Winds will be a light air, NNW at 2 mph, gusting to a light breeze, 3-7 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)

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: 4 days, 0 hours, 53 minutes
Server uptime: 4 days, 0 hours, 53 minutes
weewx v5.5.0

Sun
Start civil twilight:	06:53:40
Sunrise:	07:20:31
Transit:	12:52:45
Sunset:	18:24:27
End civil twilight:	18:51:18
Prev. Day Length:	11:06:11
Curr. Day Length:	11:03:56
Curr. Shorter by:	00:02:15
Azimuth:	59.2°
Altitude:	-48.3°
Right ascension:	205.1°
Declination:	-10.4°
Solstice:	12/21/26 12:49:59
Equinox:	03/20/27 13:24:32

Moon
Rise:	15:36:37
Transit:	21:01:01
Set:	01:31:10
Duration Seen:	09:55
Azimuth:	262.9°
Altitude:	-20.0°
Right ascension:	318.4°
Declination:	-17.4°
Full moon:	10/25/26 21:11:44
New moon:	11/08/26 23:02:03
Phase:	Waxing gibbous (67% full)

Monthly summary:
Yearly summary:

This system is powered by the open source WeeWX package, authored by Tom Keffer.

This system uses the open source Purple Air extensions to WeeWX package by Kenneth Baker to obtain the raw air pollutant values.

Thanks to JaneAndJohn.org for PHP-based RSS weather-feed code used in a prior iteration of this site.

Thanks to Ken True at Saratoga-Weather.org for pointers to good warning scripts, used in a prior iteration, and for being a great overall resource for scripting weather websites. Also, the idea to ignore certificate errors from the NOAA/NWS website comes from these scripts.

Thanks to Ken True at Saratoga-Weather.org and Mike Chaliss for their alerts script from which we leverage the array mapping alert event name to alert event background color, and a clever way to handle events that aren't in that mapping.

Thanks to Tom at carterlake.org for a script that caused me to want to learn how to obtain the raw data of a National Weather Service forecast, that triggered my building my own set of scripts. He has also created another great overall resource for scripting weather websites.

The raw data on which the forecasts are built, and the icons for these, come from the National Weather Service.

This system utilizes the xmlize utility written by Hans Anderson.

The URL used to get the alerts, and the idea to use cURL to get them (and any other needed JSON/XML data), comes from the "NWS Alerts" PHP package by Rick "Curly" at the WXForum web site.

The idea to use and how to properly invoke the xmlize library to extract information from the NWS comes from PXWeather by Jonathan M. Abbett.

The algorithms used to either adjust the Purpleair sensor PM2.5 pollutant concentrations or to convert from PM2.5 pollutant concentrations to an AQI value come from multiple sources.

If you want to see the clumsy way I integrate WeeWX and PHP, click here.