From the ISM, Institute of Supply Management. Read their Report on Business for a current measure of economic activity in the manufacturing, services and medical sectors .

Monthly report from the U.S. Census.

Monthly measure of current industrial activity. The
Advance Report on Durable Goods examines factory orders. From U.S. Census Bureau.

Data on capital spending for new and used structures and equipment by U.S. non-farm businesses.

Monthly release from the Federal Reserve

Statistics on the rates of capacity utilization for the U.S. manufacturing and publishing sectors.