Saratoga, California (West Valley College Area)

Current Weather Conditions, Maps, and Forecasts

Sunday September 7, 2025; 8:50PM

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 1 - GOOD (Using 2024 US-EPA PM2.5 conversion) Air quality is considered satisfactory, and air pollution poses little or no risk.
Outside Temperature	69.3°F
Wind Chill	69.3°F
Heat Index	69.4°F
Dew Point	60.6°F
Humidity	74%
Barometer	30.049 inHg
Barometer Trend (3 hours)	0.021 inHg
Wind	0 mph
Rain Rate	0.00 in/h
Garage Temperature	83.9°F
UV Index	0.0
ET	0.00 in
Radiation	0 W/m²
Using 2024 US-EPA PM2.5 conversion
Latest PM2.5 [AQI]	0.147 μg/m³ [1]

Since Midnight

High Temperature Low Temperature	85.6°F at 14:36:40 56.9°F at 07:02:26
High Heat Index Low Wind Chill	87.6°F at 14:36:40 56.9°F at 07:02:26
High Humidity Low Humidity	91% at 07:31:48 42% at 16:58:56
High Dewpoint Low Dewpoint	65.6°F at 14:35:22 53.7°F at 07:02:26
High Barometer Low Barometer	30.105 inHg at 11:22:06 30.021 inHg at 19:11:07
Today's Rain	0.00 in
High Rain Rate	0.00 in/h at 00:00:01
High Wind	9 mph from 327° (NNW) at 16:48:22
Average Wind	0 mph
RMS Wind	0 mph
Vector Average Speed Vector Average Direction	0 mph 341°
High Garage Temperature Low Garage Temperature	85.0°F at 18:34:05 74.0°F at 08:46:04
High UV Low UV	3.9 at 12:38:04 0.0 at 00:00:01
High ET Low ET	0.02 in at 14:00:00 0.00 in at 00:05:00
High Radiation Low Radiation	819 W/m² at 12:49:00 0 W/m² at 00:00:01
Using 2024 US-EPA PM2.5 conversion
High PM2.5 [AQI] Low PM2.5 [AQI]	1.6124 μg/m³ [9] at 15:17:31 1.6124 μg/m³ [9] at 15:17:31

Rain Year (1-Oct start)

Rain Year Total

18.15 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
Sun, 07 Sep 2025 20:51:07 -0700 (PDT)

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

Sunday
Night
Areas of fog

Lo 60 °F
Precp 0%
Areas
Fog

Monday
Partly Sunny

Hi 82 °F
Precp 3%
Partly
Sunny

Monday
Night
A chance of light rain showers, with patchy fog

Lo 62 °F
Precp 26%
Chance
Rain
Showers

Tuesday
A chance of light rain showers, with patchy fog

Hi 80 °F
Precp 25%
Chance
Rain
Showers

Tuesday
Night
Mostly Cloudy

Lo 59 °F
Precp 9%
Mostly
Cloudy

Wednesday
A slight chance of light rain showers

Hi 78 °F
Precp 21%
Slight
Chance
Rain
Showers

Wednesday
Night
Mostly Cloudy

Lo 59 °F
Precp 9%
Mostly
Cloudy

Thursday
Mostly Sunny

Hi 80 °F
Precp 6%
Mostly
Sunny

Sunday Night	Areas of fog, with a low of 60. Mostly clear in the evening, with overcast conditions arriving, becoming mostly cloudy after midnight. Humidity 84% in the evening, rising to 93% after midnight. Winds are a light air, WNW-N at 1-3 mph, gusting to a light breeze, 2-6 mph. Winds weaker in the evening.
Monday	High of 82. Mostly cloudy in the morning, with a bit of the overcast clearing, becoming partly cloudy by the afternoon. Chance of precipitation will be 3%. Humidity 96% in the morning, lowering to 58% by the afternoon. Winds will be a gentle breeze, WNW-NNW at 1-8 mph, gusting to a moderate breeze, 2-15 mph. Winds stronger in the afternoon.
Monday Night	A chance of light rain showers, with patchy fog, with a low of 62. Mostly clear in the evening, with overcast conditions arriving, becoming mostly cloudy after midnight. Chance of precipitation will be 26%. Humidity 61% in the evening, rising to 93% after midnight. Winds will be a light breeze, S-WNW at 1-7 mph, gusting to a moderate breeze, 3-13 mph. Winds weaker in the evening.
Tuesday	A chance of light rain showers, with patchy fog, with a high of 80. Mostly cloudy in the morning, with a bit of the overcast clearing, becoming partly cloudy by the afternoon. Chance of precipitation will be 25%. Humidity 93% in the morning, lowering to 62% by the afternoon. Winds will be a gentle breeze, S-W at 2-10 mph, gusting to a moderate breeze, 3-18 mph. Winds stronger in the afternoon.
Tuesday Night	Low of 59. Mostly clear in the evening, with overcast conditions arriving, becoming mostly cloudy after midnight. Chance of precipitation will be 9%. Humidity 69% in the evening, rising to 89% after midnight. Winds will be a gentle breeze, W-WNW at 6-12 mph, gusting to a fresh breeze, 9-20 mph. Winds weaker in the evening.
Wednesday	A slight chance of light rain showers, with a high of 78. Mostly cloudy in the morning, with a bit of the overcast clearing, becoming partly cloudy by the afternoon. Chance of precipitation will be 21%. Humidity 90% in the morning, lowering to 60% by the afternoon. Winds will be a gentle breeze, W at 3-10 mph, gusting to a fresh breeze, 9-20 mph. Winds stronger in the afternoon.
Wednesday Night	Low of 59. 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 87% after midnight. Winds will be a gentle breeze, W at 7-10 mph, gusting to a fresh breeze, 12-20 mph.
Thursday	High of 80. Mostly cloudy in the morning, with a bit of the overcast clearing, becoming partly cloudy by the afternoon. Chance of precipitation will be 6%. Humidity 90% in the morning, lowering to 71% by the afternoon. Winds will be a light breeze, WSW-W at 3-5 mph, gusting to a gentle breeze, 8-10 mph.
Thursday Night	Low of 57. Clear in the evening, with a few clouds later making it mostly clear after midnight. Chance of precipitation will be 1%. Humidity 62% in the evening, rising to 87% after midnight. Winds will be a gentle breeze, WNW at 6-9 mph, gusting to a moderate breeze, 9-16 mph.
Friday	High of 82. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Humidity 93% in the morning, lowering to 66% by the afternoon. Winds will be a light air, W-WNW at 2 mph, gusting to a light breeze, 6 mph.
Friday Night	Low of 57. Clear in the evening, with a few clouds later making it mostly clear after midnight. Chance of precipitation will be 1%. Humidity 58% in the evening, rising to 84% after midnight. Winds will be a gentle breeze, WNW at 2-8 mph, gusting to a moderate breeze, 5-14 mph. Winds weaker in the evening.
Saturday	High of 82. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Chance of precipitation will be 4%. Humidity 90% in the morning, lowering to 65% by the afternoon. Winds will be a light air, WNW at 2-3 mph, gusting to a light breeze, 5-7 mph.
Saturday Night	Low of 59. Mostly clear through the night. Chance of precipitation will be 6%. Humidity 56% in the evening, rising to 84% after midnight. Winds will be a gentle breeze, NW at 2-8 mph, gusting to a moderate breeze, 6-15 mph. Winds weaker in the evening.
Sunday	High of 86. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Chance of precipitation will be 5%. Humidity 93% in the morning, lowering to 64% by the afternoon. Winds will be a light air, WNW-NW at 2-3 mph, gusting to a gentle breeze, 5-8 mph.

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: 0 days, 5 hours, 32 minutes
Server uptime: 4 days, 18 hours, 34 minutes
weewx v5.1.0

Sun
Start civil twilight:	06:16:45
Sunrise:	06:43:40
Transit:	13:05:50
Sunset:	19:27:23
End civil twilight:	19:54:14
Prev. Day Length:	12:46:03
Curr. Day Length:	12:43:43
Curr. Shorter by:	00:02:20
Azimuth:	291.0°
Altitude:	-16.8°
Right ascension:	166.9°
Declination:	5.6°
Equinox:	09/22/25 11:19:17
Solstice:	12/21/25 07:02:51

Moon
Rise:	19:34:18
Transit:	00:46:02
Set:	06:34:31
Duration Seen:	11:00
Azimuth:	105.8°
Altitude:	13.7°
Right ascension:	352.5°
Declination:	-3.9°
New moon:	09/21/25 12:54:03
Full moon:	10/06/25 20:47:33
Phase:	Full (100% 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 a copy of the current code that produces this generated-forecast information, and performs AQI calculations, as well as more open source license information for this package and the ones that it uses or has learned from, click here.

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