Saratoga, California (West Valley College Area)

Current Weather Conditions, Maps, and Forecasts

Tuesday October 27, 2026; 6:55AM

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	49.6°F
Wind Chill	49.6°F
Heat Index	48.5°F
Dew Point	46.8°F
Humidity	90%
Barometer	30.061 inHg
Barometer Trend (3 hours)	-0.022 inHg
Wind	0 mph
Rain Rate	0.00 in/h
Garage Temperature	65.9°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	51.3°F at 00:28:16 47.3°F at 04:10:52
High Heat Index Low Wind Chill	50.2°F at 00:28:16 47.3°F at 04:10:52
High Humidity Low Humidity	91% at 06:15:52 85% at 01:07:32
High Dewpoint Low Dewpoint	47.7°F at 00:24:52 44.2°F at 03:03:24
High Barometer Low Barometer	30.108 inHg at 01:55:04 30.060 inHg at 06:42:04
Today's Rain	0.00 in
High Rain Rate	0.00 in/h at 00:00:01
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	70.1°F at 00:00:01 65.9°F at 06:49:02
High UV Low UV	0.0 at 00:00:01 0.0 at 00:00:01
High Radiation Low Radiation	0 W/m² at 00:00:01 0 W/m² at 00:00:01

Rain Year (1-Oct start)

Rain Year Total

0.10 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 5 PM PDT FRIDAY
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
Tue, 27 Oct 2026 06:20:00 -0700 (PDT)

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

Tuesday
Decreasing Clouds

Hi 66 °F
Precp 2%
Decreasing
Clouds

Tuesday
Night
Partly Cloudy

Lo 46 °F
Precp 1%
Partly
Cloudy

Wednesday
Partly Sunny

Hi 68 °F
Precp 0%
Partly
Sunny

Wednesday
Night
Mostly Cloudy

Lo 48 °F
Precp 0%
Mostly
Cloudy

Thursday
Mostly Cloudy

Hi 68 °F
Precp 0%
Mostly
Cloudy

Thursday
Night
Patchy fog

Lo 46 °F
Precp 0%
Patchy
Fog

Friday
Mostly Sunny

Hi 64 °F
Precp 0%
Mostly
Sunny

Friday
Night
Partly Cloudy

Lo 44 °F
Precp 2%
Partly
Cloudy

Tuesday	High of 66. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Chance of precipitation is 2%. Humidity 97% in the morning, lowering to 65% by the afternoon. Winds are a gentle breeze, W-NNW at 3-8 mph, gusting to a moderate breeze, 7-15 mph. Winds stronger in the afternoon.
Tuesday Night	Low of 46. Mostly clear in the evening, with incoming clouds making it partly cloudy after midnight. Chance of precipitation will be 1%. Humidity 67% in the evening, rising to 100% after midnight. Winds will be a light breeze, W-NW at 1-6 mph, gusting to a gentle breeze, 2-12 mph. Winds weaker in the evening.
Wednesday	High of 68. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Humidity 97% in the morning, lowering to 47% by the afternoon. Winds will be a light breeze, W-N at 1-7 mph, gusting to a moderate breeze, 2-14 mph. Winds stronger in the afternoon.
Wednesday Night	Low of 48. Mostly clear in the evening, with incoming clouds making it partly cloudy after midnight. Humidity 54% in the evening, rising to 77% after midnight. Winds will be a light breeze, NNW-ESE at 1-6 mph, gusting to a gentle breeze, 1-12 mph. Winds weaker in the evening.
Thursday	High of 68. Mostly cloudy in the morning, with a bit of the overcast clearing, becoming partly cloudy by the afternoon. Humidity 74% in the morning, lowering to 50% by the afternoon. Winds will be a light air, SSE-W at 1-2 mph, gusting to a light breeze, 1-7 mph. Winds stronger in the afternoon.
Thursday Night	Patchy fog, with a low of 46. Mostly cloudy in the evening, with a bit of the overcast clearing, becoming partly cloudy after midnight. Humidity 59% in the evening, rising to 83% after midnight. Winds will be a light air, W at 2-3 mph, gusting to a light breeze, 5-7 mph.
Friday	High of 64. Partly cloudy in the morning, with some clouds clearing, making it mostly sunny by the afternoon. Humidity 93% in the morning, lowering to 70% by the afternoon. Winds will be a light air, W-NW at 2-3 mph, gusting to a gentle breeze, 5-8 mph.
Friday Night	Low of 44. Mostly clear through the night. Chance of precipitation will be 2%. Humidity 58% in the evening, rising to 83% after midnight. Winds will be a light breeze, WNW-NW at 5-7 mph, gusting to a moderate breeze, 8-14 mph.
Saturday	High of 62. Partly cloudy through the day. Chance of precipitation will be 6%. Humidity 92% in the morning, lowering to 69% by the afternoon. Winds will be a light air, NW-NNW at 1-3 mph, gusting to a gentle breeze, 3-9 mph. Winds stronger in the afternoon.
Saturday Night	Low of 46. Partly cloudy through the night. Chance of precipitation will be 18%. Humidity 62% in the evening, rising to 79% after midnight. Winds will be a light breeze, NW at 5-7 mph, gusting to a moderate breeze, 8-14 mph.
Sunday	High of 64. Mostly sunny through the day. Chance of precipitation will be 7%. Humidity 86% in the morning, lowering to 62% by the afternoon. Winds will be a light breeze, N at 2-6 mph, gusting to a moderate breeze, 3-13 mph. Winds stronger in the afternoon.
Sunday Night	Low of 48. Mostly clear through the night. Chance of precipitation will be 3%. Humidity 50% in the evening, rising to 65% after midnight. Winds will be a gentle breeze, NW-N at 3-8 mph, gusting to a moderate breeze, 5-16 mph. Winds weaker in the evening.
Monday	High of 68. Mostly sunny through the day. Chance of precipitation will be 1%. Humidity 63% in the morning, lowering to 44% by the afternoon. Winds will be a light air, NNE-ENE at 1-2 mph, gusting to a light breeze, 2-6 mph. 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: 5 days, 12 hours, 47 minutes
Server uptime: 5 days, 12 hours, 47 minutes
weewx v5.5.2

Sun
Start civil twilight:	07:00:11
Sunrise:	07:27:20
Transit:	12:51:51
Sunset:	18:15:53
End civil twilight:	18:43:00
Prev. Day Length:	10:50:43
Curr. Day Length:	10:48:33
Curr. Shorter by:	00:02:10
Azimuth:	100.8°
Altitude:	-7.1°
Right ascension:	211.9°
Declination:	-12.9°
Solstice:	12/21/26 12:49:59
Equinox:	03/20/27 13:24:32

Moon
Rise:	19:08:19
Transit:	01:49:52
Set:	09:26:01
Duration Seen:	14:18
Azimuth:	280.1°
Altitude:	25.9°
Right ascension:	48.6°
Declination:	23.0°
New moon:	11/08/26 23:02:03
Full moon:	11/24/26 06:53:29
Phase:	Waning gibbous (97% 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.

Severity Minor	Urgency Expected	Certainty Likely
Alert Effective Tue, 27 Oct 5:41 am (PDT)	Event Onset Tue, 27 Oct 5:41 am (PDT)	Alert Updated by NWS On Tue, 27 Oct 5:41 am (PDT)
Alert Expires Tue, 27 Oct 3:00 pm (PDT)	Event Ends Fri, 30 Oct 5:00 pm (PDT)
Description
* WHAT...Up to 2.1 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...Bay Shoreline locations of San Pablo Bay, San Francisco Bay, and Monterey Bay. * WHEN...Until 5 PM PDT Friday. * IMPACTS...High tides will result in flooding of low-lying infrastructure, isolated road closures, and coastal erosion. Rising tides will bring water and waves farther up the beach than normal, restricting escape from beaches and coastal areas. More substantial impacts are expected along bayshore Marin County where increased flooding is anticipated across low lying areas. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 2.1 ft above normal (7.9 ft MLLW) at 12:15 PM Tuesday 10/27, 1.9 ft above normal (7.7 ft MLLW) at 12:56 PM Wednesday 10/28, 1.7 ft above normal (7.5 ft MLLW) at 01:43 PM Thursday 10/29, and 1.6 ft above normal (7.4 ft MLLW) at 02:39 PM Friday 10/30. These predictions include up to 1.2 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through 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

Tuesday October 27, 2026; 6:55AM

Active Advisory

COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 5 PM PDT FRIDAY

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.