This page illustrates how to request custom datasets using an HTTP form post.
<request type="current" pub="mywx123456"> <location code="kmsn"/> <location code="klga"/> </request>
<request type="fiveday" pub="mywx123456"> <location code="kmsn"/> <location code="klga"/> </request>
<request type="sevenday" pub="mywx123456"> <location code="kmsn"/> <location code="klga"/> </request>
<request type="zoneforecast" pub="mywx123456"> <location code="WIZ063"/> <location code="NYZ065"/> </request>