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68°
- San Mateo, CA (94402)
  Today
  
  Partly cloudy skies. High 74F. Winds WNW at 10 to 20 mph..
  
  Tonight
  
  Partly cloudy skies early will give way to cloudy skies late. Low around 50F. Winds WSW at 10 to 15 mph.
  
  Updated: May 21, 2026 @ 9:34 am
- Full Forecast

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Mercury, Mining and Menlo Park

Updated Apr 1, 2025

There is a lot of talk these days about mercury poisoning and the pollution of San Francisco Bay. Mercury was a vital part of gold mining in o…

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