The MNI Chicago Business Barometer, also known as Chicago purchasing manager's index (PMI) came in at 64.47 in February, up from an unrevised 56.7 in January. That was the highest reading since December of 2017.
Economists had forecast the index to increase to 57.8.
A reading above 50 indicates improving conditions, while a reading below this level shows worsening of the situation.
Of the major sub-components of the Barometer, the production index surged up to a six-month high, while the order backlogs index offset January's sharp drop. The employment index rose to its highest level since July of 2018, although firms noted they were concerned about finding the right fit of employees to meet their needs. Meanwhile, the supplier deliveries index posted the fourth consecutive decline, hitting the lowest level since June of 2017. On the inflation front, the prices paid indicator recorded its first gain in seven months, easing the downward pressure seen on prices through the second half of the last year.