APRS/CWOP weather report from GW1835 – aprs.fi

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Location:	37°41.63' N 122°03.96' W - locator CM87XQ26BM - show map 1.8 km East bearing 91° from Castro Valley, Alameda County, California, United States [?] 4.2 km East bearing 91° from Ashland, Alameda County, California, United States 32.3 km East bearing 106° from San Francisco, San Francisco County, California, United States 42.2 km North bearing 339° from San Jose, Santa Clara County, California, United States
Last WX report:	2025-10-17 15:30:51 UTC (71d 4h2m ago) 2025-10-17 08:30:51 PDT local time at Castro Valley, United States [?]
Temperature:	11.1 °C
Dew point:	9.5 °C
Humidity:	90 %
Pressure:	1016.7 mbar
Wind:	North 345° 0.4 m/s (Gusts 1.3 m/s)
Rain:	0.0 mm during last 1 hour, 0.0 mm during last 24 hours, 0.0 mm since midnight

This page shows weather data collected mostly by privately owned and operated weather stations. Stations with a CW-prefixed, numbered callsign are taking part in the Citizen Weather Observer Program (CWOP). Most other weather stations are amateur radio operators with a weather station. Some information is also converted by individuals from publicly available sources like airport weather reports.