
The climate of San Bernardino is arid, with very little moisture. Summer and fall are the sunniest and warmest times of the year, with very little moisture. Day temperatures soar into the 90s. Night temperatures plunge to the 60s. Winter and spring are the rainier, cooler times of the year, with day temperatures 56-62 and night temperatures 29-36
San Bernardino's bad air quality rivals that of LA and has sometimes been worse than other US cities, even LA.
San Bernardino can be accessed by several Southern California airports. [wiki=d5786d74f02ef3cbbe2721a9136d29a5#By_plane]Ontario International Airport[/wiki] (airport code: ONT) is the best option, being located approximately 15 miles southwest of San Bernardino. For those willing to travel further, west of the city is [wiki=c133513b3c1d2f3ffc1cbf13999816ec#By_plane]Burbank Bob Hope Airport[/wiki](airport code: BUR) and lying to the southwest, Long Beach Airport (airport code: LGB). Each of these airports are approximately 67 miles away. [wiki=d0aa2dffa0da83f1f34681308d04db5d#By_plane]Los Angeles International Airport[/wiki] (LAX) is about 80 miles southwest. These airports are serviced by most major airlines such as Delta, American, United, Southwest, Alaska Air, and US Airways. LAX typically has more frequent service and more affordable flights than those to the other airports; but the convenience of Ontario Airport can make it an asset.
Amtrak [url=http://www.amtrak.com/]]serves San Bernardino with a station at 1170 W. Third Street, which is served by the daily long-distance Southwest Chief line between Chicago and Los Angeles. Metrolink [http://www.metrolinktrains.com/[/url], the regional commuter rail service, also serves San Bernardino at their station just next door to the Amtrak station. San Bernardino is the terminus of the San Bernardino line to L.A. Union Station, as well as offering limited service on the Inland Empire-Orange County line to Orange County.
