Saratoga, California (West Valley College Area)

Current Weather Conditions, Maps, and Forecasts

Monday June 2, 2025; 5:35PM

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 16 - GOOD (Using 2024 US-EPA PM2.5 conversion) Air quality is considered satisfactory, and air pollution poses little or no risk.
Outside Temperature	78.4°F
Wind Chill	78.4°F
Heat Index	78.1°F
Dew Point	56.5°F
Humidity	47%
Barometer	29.910 inHg
Barometer Trend (3 hours)	0.009 inHg
Wind	0 mph
Rain Rate	0.00 in/h
Garage Temperature	81.7°F
UV Index	1.0
ET	0.00 in
Radiation	454 W/m²
Using 2024 US-EPA PM2.5 conversion
Latest PM2.5 [AQI]	2.8192 μg/m³ [16]
Latest PM10 [AQI]	0 μg/m³ [0]

Since Midnight

High Temperature Low Temperature	85.5°F at 14:49:22 49.9°F at 06:12:35
High Heat Index Low Wind Chill	84.7°F at 14:39:05 49.9°F at 06:12:35
High Humidity Low Humidity	91% at 06:24:09 38% at 14:49:50
High Dewpoint Low Dewpoint	60.2°F at 15:41:48 46.9°F at 05:34:19
High Barometer Low Barometer	29.921 inHg at 12:36:04 29.827 inHg at 01:34:03
Today's Rain	0.00 in
High Rain Rate	0.00 in/h at 00:00:05
High Wind	12 mph from 280° (W) at 15:07:14
Average Wind	0 mph
RMS Wind	1 mph
Vector Average Speed Vector Average Direction	0 mph 312°
High Garage Temperature Low Garage Temperature	81.7°F at 17:33:02 71.9°F at 09:24:01
High UV Low UV	4.9 at 12:29:24 0.0 at 00:00:05
High ET Low ET	0.03 in at 14:00:00 0.00 in at 00:05:00
High Radiation Low Radiation	969 W/m² at 13:07:40 0 W/m² at 00:00:05
Using 2024 US-EPA PM2.5 conversion
High PM2.5 [AQI] Low PM2.5 [AQI]	10.9734 μg/m³ [54] at 08:59:58 1.2676 μg/m³ [7] at 07:44:56
High PM10 [AQI] Low PM10 [AQI]	24 μg/m³ [22] at 08:59:58 0 μg/m³ [0] at 09:59:59

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

Obtaining National Weather Service forecast

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
Mon, 02 Jun 2025 17:20:01 -0700 (PDT)

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

Monday
Night
Clear

Lo 51 °F
Precp 0%
Clear

Tuesday
Mostly Sunny

Hi 84 °F
Precp 0%
Mostly
Sunny

Tuesday
Night
Mostly Clear

Lo 51 °F
Precp 0%
Mostly
Clear

Wednesday
Mostly Sunny

Hi 84 °F
Precp 0%
Mostly
Sunny

Wednesday
Night
Clear

Lo 53 °F
Precp 1%
Clear

Thursday
Partly Sunny

Hi 82 °F
Precp 1%
Partly
Sunny

Thursday
Night
Mostly Clear

Lo 53 °F
Precp 1%
Mostly
Clear

Monday Night	Low of 51. Clear in the evening, with incoming clouds making it partly cloudy after midnight. Humidity 47% in the evening, rising to 90% after midnight. Winds will be a light breeze, N at 0-5 mph, gusting to a gentle breeze, 3-8 mph. Winds weaker in the evening.
Tuesday	High of 84. Partly cloudy in the morning, with clouds clearing, to become sunny by the afternoon. Humidity 90% in the morning, lowering to 44% by the afternoon. Winds will be a gentle breeze, N-NNE at 1-8 mph, gusting to 3-12 mph. Winds stronger in the afternoon.
Tuesday Night	Low of 51. Clear in the evening, with a few clouds later making it mostly clear after midnight. Humidity 47% in the evening, rising to 83% after midnight. Winds will be a light breeze, NNW-ENE at 1-7 mph, gusting to a gentle breeze, 3-10 mph. Winds weaker in the evening.
Wednesday	High of 84. Mostly sunny in the morning, with any clouds clearing to become sunny by the afternoon. Humidity 87% in the morning, lowering to 41% by the afternoon. Winds will be a light breeze, S-W at 2-7 mph, gusting to a moderate breeze, 5-14 mph. Winds stronger in the afternoon.
Wednesday Night	Low of 53. Clear in the evening, with incoming clouds making it partly cloudy after midnight. Chance of precipitation will be 1%. Humidity 44% in the evening, rising to 83% after midnight. Winds will be a light breeze, S-WSW at 2-7 mph, gusting to a moderate breeze, 6-14 mph. Winds weaker in the evening.
Thursday	High of 82. Partly cloudy in the morning, with clouds clearing, to become sunny by the afternoon. Chance of precipitation will be 1%. Humidity 86% in the morning, lowering to 47% by the afternoon. Winds will be a light breeze, S-WSW at 2-7 mph, gusting to a moderate breeze, 6-14 mph. Winds stronger in the afternoon.
Thursday Night	Low of 53. Clear through the night. Chance of precipitation will be 1%. Humidity 48% in the evening, rising to 80% after midnight. Winds will be a light breeze, WSW-W at 2-7 mph, gusting to a moderate breeze, 5-14 mph. Winds weaker in the evening.
Friday	High of 84. Mostly sunny in the morning, with any clouds clearing to become sunny by the afternoon. Chance of precipitation will be 1%. Humidity 86% in the morning, lowering to 55% by the afternoon. Winds will be a light air, SSW-WSW at 1-3 mph, gusting to a gentle breeze, 2-8 mph. Winds stronger in the afternoon.
Friday Night	Low of 55. Clear through the night. Humidity 45% in the evening, rising to 77% after midnight. Winds will be a light breeze, WSW-W at 2-7 mph, gusting to a moderate breeze, 5-14 mph. Winds weaker in the evening.
Saturday	High of 86. Mostly sunny in the morning, with any clouds clearing to become sunny by the afternoon. Humidity 90% in the morning, lowering to 52% by the afternoon. Winds will be a light air, SW-W at 1-3 mph, gusting to a gentle breeze, 2-8 mph. Winds stronger in the afternoon.
Saturday Night	Low of 55. Clear through the night. Humidity 44% in the evening, rising to 75% after midnight. Winds will be a light breeze, W-WNW at 2-7 mph, gusting to a moderate breeze, 5-14 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. Humidity 86% in the morning, lowering to 53% by the afternoon. Winds will be a light air, W-WNW at 1-3 mph, gusting to a gentle breeze, 3-9 mph. Winds stronger in the afternoon.
Sunday Night	Low of 55. Clear through the night. Humidity 43% in the evening, rising to 75% after midnight. Winds will be a light breeze, W-WNW at 2-7 mph, gusting to a moderate breeze, 6-14 mph. Winds weaker in the evening.

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: 11 days, 23 hours, 16 minutes
Server uptime: 11 days, 23 hours, 16 minutes
weewx v5.1.0

Sun
Start civil twilight:	05:17:24
Sunrise:	05:48:33
Transit:	13:06:06
Sunset:	20:23:57
End civil twilight:	20:55:10
Prev. Day Length:	14:34:25
Curr. Day Length:	14:35:24
Curr. Longer by:	00:00:59
Azimuth:	275.7°
Altitude:	31.0°
Right ascension:	71.3°
Declination:	22.3°
Solstice:	06/20/25 19:42:18
Equinox:	09/22/25 11:19:17

Moon
Rise:	12:36:04
Transit:	19:16:26
Set:	01:22:55
Duration Seen:	12:47
Azimuth:	136.1°
Altitude:	53.0°
Right ascension:	163.4°
Declination:	7.9°
Full moon:	06/11/25 00:43:45
New moon:	06/25/25 03:31:32
Phase:	First quarter (49% 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.