September Still in Decline

Weekly visits to Placer’s Industrial Manufacturing Index remained below 2024 levels throughout September and into early October. Although trends began to stabilize during the week of September 22nd, activity continued to lag behind last year’s benchmarks – signaling a sustained year-over-year (YoY) slowdown.

These findings align broadly with the ISM Manufacturing PMI, which edged up to 49.1% in September from 48.7% in August – signaling contraction, but at a potentially moderating pace. (Any value below 50 indicates a decline.) Still, sentiment indicators remain mixed, with the S&P Global U.S. Manufacturing PMI easing from 53.0 in August to 52.0 in September – reflecting slower growth but still remaining in expansionary territory. 

Autos Under Pressure

As shown in the chart above, the slowdown was particularly acute in the auto sector, where U.S. sales forecasts have been revised downward and production figures indicate declining output. The sharp divergence from the overall index beginning the week of September 15th likely also reflects industry-wide disruption following last month’s devastating fire at the Novelis plant in New York, which reverberated throughout the industry.

Automation and AI on the Horizon

Beyond short-term disruptions like the Novelis fire and ongoing tariff uncertainty, structural forces tied to AI and automation may also be contributing to the industrial deceleration. Many plants are adopting AI-enabled predictive maintenance, robotics, and remote monitoring, which reduce the need for certain categories of employees. And in autos especially, the shift to EV production and AI-driven retooling may already be visible in lower employee presence. 

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Placer.ai leverages a panel of tens of millions of devices and utilizes machine learning to make estimations for visits to locations across the US. The data is trusted by thousands of industry leaders who leverage Placer.ai for insights into foot traffic, demographic breakdowns, retail sale predictions, migration trends, site selection, and more.