diff --git a/assets/js/app.js b/assets/js/app.js
index b357ae4..ec567fc 100644
--- a/assets/js/app.js
+++ b/assets/js/app.js
@@ -327,10 +327,8 @@ export function UTCIForecast() {
     const onClickOutside = (e) => {
       if (colPopupRef.current && !colPopupRef.current.contains(e.target)) closePopup();
     };
-    const onScrollOrResize = () => {
-      if (!colPopupThRef.current) return;
-      setColPopup(prev => prev ? { ...prev, ...calcPopupPos(colPopupThRef.current) } : null);
-    };
+    // Close on scroll (avoids scroll-linked jank) or resize
+    const onScrollOrResize = () => closePopup();
     document.addEventListener('mousedown', onClickOutside);
     window.addEventListener('scroll', onScrollOrResize, { passive: true, capture: true });
     window.addEventListener('resize', onScrollOrResize, { passive: true });