National Weather Service United States Department of Commerce

Unsettled Weather Along the West Coast; Elevated Fire Threat in the High Plains

Rain and high elevation snow will impact the Pacific Northwest to northern California into early next week. Lake effect snow will be possible near the Lower Great Lakes this weekend. There is an elevated fire weather threat in the High Plains today. Read More >

Altimeter Setting

by Tim Brice and Todd Hall

 

 
 
 
 
Enter the elevation of the station and choose your units6: Altimeter Setting in in. of mercury:
feet meters in HG
Enter your station pressure (not the altimeter setting) and choose your units: Altimeter Setting in mm of mercury:
in of mercury mm of mercury millibars (hPA) mm HG
  Altimeter Setting in millibars (hPa):
  mb (hPA)

 

What is the formula for the altimeter setting script?