The Collaborative International Dictionary of English v.0.48:

Solano \So*la"no\, [Sp., fr. L. solanus (sc. ventus), from sol
   the sun.]
   A hot, oppressive wind which sometimes blows in the
   Mediterranean, particularly on the eastern coast of Spain.
   [1913 Webster]

U.S. Gazetteer Counties (2000):

Solano -- U.S. County in California
   Population (2000):    394542
   Housing Units (2000): 134513
   Land area (2000):     829.190062 sq. miles (2147.592310 sq. km)
   Water area (2000):    77.480928 sq. miles (200.674674 sq. km)
   Total area (2000):    906.670990 sq. miles (2348.266984 sq. km)
   Located within:       California (CA), FIPS 06
   Location:             38.235934 N, 122.051826 W
   Headwords:
    Solano
    Solano, CA
    Solano County
    Solano County, CA