Saratoga, California (West Valley College Area)

Current Weather Conditions, Maps, and Forecasts

Friday December 5, 2025; 2:25PM

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 58 - MODERATE (Using 2024 US-EPA PM2.5 conversion) Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution. Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
Outside Temperature	59.1°F
Wind Chill	59.1°F
Heat Index	57.7°F
Dew Point	46.9°F
Humidity	64%
Barometer	30.129 inHg
Barometer Trend (3 hours)	-0.068 inHg
Wind	0 mph
Rain Rate	0.00 in/h
Garage Temperature	57.5°F
UV Index	0.0
ET	0.00 in
Radiation	40 W/m²
Using 2024 US-EPA PM2.5 conversion
Latest PM2.5 [AQI]	12.6 μg/m³ [58]

Since Midnight

High Temperature Low Temperature	59.5°F at 14:05:29 38.3°F at 05:43:45
High Heat Index Low Wind Chill	58.2°F at 14:05:29 38.3°F at 05:43:45
High Humidity Low Humidity	94% at 08:21:23 60% at 13:15:14
High Dewpoint Low Dewpoint	47.3°F at 14:05:29 36.2°F at 05:43:45
High Barometer Low Barometer	30.255 inHg at 00:06:04 30.129 inHg at 14:23:06
Today's Rain	0.00 in
High Rain Rate	0.00 in/h at 00:00:01
High Wind	1 mph from 287° (WNW) at 12:50:42
Average Wind	0 mph
RMS Wind	0 mph
Vector Average Speed Vector Average Direction	0 mph N/A
High Garage Temperature Low Garage Temperature	57.5°F at 00:00:01 54.3°F at 07:53:03
High UV Low UV	1.3 at 11:11:01 0.0 at 00:00:01
High ET Low ET	0.01 in at 12:00:00 0.00 in at 00:05:00
High Radiation Low Radiation	480 W/m² at 11:40:45 0 W/m² at 00:00:01

Rain Year (1-Oct start)

Rain Year Total

5.68 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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High Temperature Outlook

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Low 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

Active Advisory

Continued minor coastal flood advisory COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST SUNDAY
To show the detailed information about this alert, click anywhere in this alert box

National Weather Service alerts map for your zone/county. The color key table only shows the keys for alerts that are active in your specified county or zone and only shows one alert for each spot on the map, even when more than one alert may be active at that spot. According to the NWS, when there are multiple alerts for a single spot, 'only the most significant threat to life or property is displayed on the map.'








				Coastal Flood Advisory

You may also obtain far more information about this weather alert by clicking on this link to
the National Weather Service Forecast Office's report for your forecast region.

(Alerts are from the National Weather Service's CAP v1.2 JSON Feed)

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
Fri, 05 Dec 2025 14:15:11 -0800 (PST)

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

Friday
Mostly Sunny

Hi 64 °F
Precp 0%
Mostly
Sunny

Friday
Night
Mostly Clear

Lo 44 °F
Precp 0%
Mostly
Clear

Saturday
Mostly Sunny

Hi 66 °F
Precp 1%
Mostly
Sunny

Saturday
Night
Mostly Clear

Lo 44 °F
Precp 0%
Mostly
Clear

Sunday
Partly Sunny

Hi 66 °F
Precp 0%
Partly
Sunny

Sunday
Night
Partly Cloudy

Lo 46 °F
Precp 0%
Partly
Cloudy

Monday
Mostly Sunny

Hi 66 °F
Precp 0%
Mostly
Sunny

Monday
Night
Partly Cloudy

Lo 46 °F
Precp 0%
Partly
Cloudy

Friday	High of 64. Mostly sunny through the day. Humidity 52% in the morning, rising to 64% by the afternoon. Winds are a light breeze, NNW at 3-6 mph, gusting to a gentle breeze, 6-8 mph.
Friday Night	Low of 44. Mostly clear through the night. Humidity 71% in the evening, rising to 90% after midnight. Winds will be a light air, SSE-NNW at 1-2 mph, gusting to a light breeze, 2-5 mph. Sustained winds stronger in the evening.
Saturday	High of 66. Mostly sunny in the morning, with any clouds clearing to become sunny by the afternoon. Chance of precipitation will be 1%. Humidity 93% in the morning, lowering to 72% by the afternoon. Winds will be a light breeze, WNW-NNW at 1-7 mph, gusting to a gentle breeze, 3-12 mph. Winds stronger in the afternoon.
Saturday Night	Low of 44. Mostly clear in the evening, with incoming clouds making it partly cloudy after midnight. Humidity 77% in the evening, rising to 92% after midnight. Winds will be a light air, WNW-NW at 2-3 mph, gusting to a gentle breeze, 5-8 mph.
Sunday	High of 66. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Humidity 96% in the morning, lowering to 65% by the afternoon. Winds will be a light breeze, NNW-N at 2-6 mph, gusting to a gentle breeze, 5-9 mph. Winds stronger in the afternoon.
Sunday Night	Low of 46. Mostly clear in the evening, with incoming clouds making it partly cloudy after midnight. Humidity 83% in the evening, rising to 90% after midnight. Winds will be a light air, WNW-N at 2 mph, gusting to a light breeze, 3-7 mph.
Monday	High of 66. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Humidity 93% in the morning, lowering to 65% by the afternoon. Winds will be a light breeze, N-NNE at 2-5 mph, gusting to a gentle breeze, 3-9 mph. Winds stronger in the afternoon.
Monday Night	Low of 46. Mostly clear through the night. Humidity 65% in the evening, rising to 86% after midnight. Winds will be a light breeze, NNW-N at 2-6 mph, gusting to a gentle breeze, 5-8 mph. Sustained winds stronger in the evening.
Tuesday	High of 68. Mostly sunny through the day. Chance of precipitation will be 1%. Humidity 86% in the morning, lowering to 77% by the afternoon. Winds will be a light air, N-NNE at 2 mph, gusting to a light breeze, 5-6 mph.
Tuesday Night	Low of 48. Mostly clear through the night. Chance of precipitation will be 1%. Humidity 68% in the evening, rising to 83% after midnight. Winds will be a light air, NNW-N at 2-3 mph, gusting to a light breeze, 6 mph.
Wednesday	High of 71. Mostly sunny through the day. Chance of precipitation will be 1%. Humidity 89% in the morning, lowering to 81% by the afternoon. Winds will be a light air, N-NNE at 2 mph, gusting to a light breeze, 6 mph.
Wednesday Night	Low of 48. Clear in the evening, with a few clouds later making it mostly clear after midnight. Chance of precipitation will be 1%. Humidity 68% in the evening, rising to 86% after midnight. Winds will be a light air, NNW-N at 2-3 mph, gusting to a light breeze, 6-7 mph.
Thursday	High of 71. Mostly sunny through the day. Chance of precipitation will be 2%. Humidity 89% in the morning, lowering to 81% by the afternoon. Winds will be a light air, N at 2 mph, gusting to a light breeze, 5-6 mph.
Thursday Night	Low of 48. Clear in the evening, with a few clouds later making it mostly clear after midnight. Chance of precipitation will be 3%. Humidity 66% in the evening, rising to 80% after midnight. Winds will be a light air, NNW-NNE at 3 mph, gusting to a light breeze, 6 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: 3 days, 3 hours, 56 minutes
Server uptime: 3 days, 3 hours, 57 minutes
weewx v5.2.0

Sun
Start civil twilight:	06:37:36
Sunrise:	07:06:55
Transit:	11:58:50
Sunset:	16:50:35
End civil twilight:	17:19:54
Prev. Day Length:	09:44:34
Curr. Day Length:	09:43:40
Curr. Shorter by:	00:00:54
Azimuth:	216.1°
Altitude:	21.1°
Right ascension:	252.7°
Declination:	-22.5°
Solstice:	12/21/25 07:02:51
Equinox:	03/20/26 07:45:53

Moon
Rise:	17:30:43
Transit:	00:20:09
Set:	08:17:17
Duration Seen:	14:47
Azimuth:	20.5°
Altitude:	-22.3°
Right ascension:	87.8°
Declination:	27.4°
New moon:	12/19/25 17:43:17
Full moon:	01/03/26 02:02:50
Phase:	Full (98% 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.

Severity Minor	Urgency Expected	Certainty Likely
Alert Effective Fri, 05 Dec 12:49 pm (PST)	Event Onset Fri, 05 Dec 12:49 pm (PST)	Alert Updated by NWS On Fri, 05 Dec 12:49 pm (PST)
Alert Expires Sat, 06 Dec 5:00 am (PST)	Event Ends Sun, 07 Dec 3:00 pm (PST)
Description
* WHAT...Up to 1.7 ft of inundation above ground level is possible in low lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along San Francisco and Monterey Bay. * WHEN...Until 3 PM PST Sunday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...The San Francisco tidal gauge high tide is expected to be 1.7 ft above normal (7.51 ft MLLW) at 11:25 AM Saturday and 0.9 ft above normal (6.75 ft MLLW) at 12:17 PM Sunday. High tide timing varies up to 90 minutes earlier or later along the Pacific Coast and throughout the San Francisco Bay respectively.
*According to the National Weather Service, your response to this alert should be to attend to information sources as described in this instruction.*
Instruction
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

Saratoga, California (West Valley College Area)

Current Weather Conditions, Maps, and Forecasts

Friday December 5, 2025; 2:25PM

Active Advisory

COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST SUNDAY

You may also obtain far more information about this weather alert by clicking on this link to the National Weather Service Forecast Office's report for your forecast region.

(Alerts are from the National Weather Service's CAP v1.2 JSON Feed)

Weather Forecast

You may also obtain far more information about this weather alert by clicking on this link to
the National Weather Service Forecast Office's report for your forecast region.