The number
ISM Manufacturing PMI at 54.6% in August, down 1 point from 55.6% in July, but still solidly in expansion territory. Eighth consecutive month of manufacturing sector growth, overall economy expanding for the 22nd straight month.
Key components
New Orders at 53.7%, a sharp 3-point drop (56.7% in July). Production at 58.3%, nearly flat (-0.2 point). Employment at 51.2%, down 1.6 points but still in expansion. Backlog of Orders at 51.8%, down 3.2 points. Prices stays elevated and flat at 71.1%, the 23rd straight month of rising raw material prices.
The real signal, broad-based slowdown except in one spot
Of the five subindexes making up the PMI, only one accelerated this month, Supplier Deliveries (+0.4 point), indicating a continuing slowdown of the supply chain. All other demand indicators (New Orders, Backlog, Imports) slowed, a sign of gradually fading momentum rather than a one-off shock.
The explicit geopolitical factor
Respondent comments cite the Iran war in 30% of negative comments, tariffs in 29%, and pricing volatility in 57%. Direct confirmation that the Middle East conflict and tariffs are concretely weighing on margins and sector confidence, consistent with already identified pressure on oil and metals (steel, aluminum under Section 232 tariffs).
Deteriorating sentiment
Positive-to-negative comment ratio fell to 42/58 versus a more favorable ratio in July. The employment comment ratio also worsened (1.3-to-1 versus 1.5-to-1 the previous month). Share of manufacturing GDP in strong contraction rose from 0% to 2% between July and August, a sign of slightly widening sector dispersion.
USD implications
Impact likely limited and mixed. The headline stays above 50, so no recession signal, but slowing demand (New Orders, Backlog) and deteriorating sentiment could feed a narrative of gradual US economic slowdown. This print lands in an already busy context, September Fed hike odds increasingly priced in (hawkish Warsh), so the direct dollar impact will likely be secondary to the rates narrative. DXY: no strong standalone catalyst, read this in addition to rather than as the session's main driver.
Point of caution
The "54.6%, in expansion" headline masks a gradual deterioration in underlying demand (New Orders, Backlog, Imports all down sharply). The real risk to watch over coming months is the tariffs-plus-Iran-conflict combination continuing to squeeze margins (Prices Index stuck at 71.1% for two months), a stagflationary factor that complicates the read for the Fed.