3.8.6

Lock UTCI to Standard = Grass

assets/js/compute.js

@@ -86,9 +86,20 @@ export function buildHourlyRows({ forecast, airQuality, location, vehicleType, v
     // concreteT is now stamped in the two-pass section below (thermal lag).
     // vehicleT is stamped in the two-pass section below (thermal lag).
     const eh       = vaporPressureHpa(Ta, RH);
+    // UTCI: the standard, unmodified benchmark. Computed from the raw
+    // open-ground observation only - NO Solar Model anywhere in it. Its whole
+    // job is to be the fixed reference SunSoak is read against, so it must
+    // not move when the user switches environment; if both numbers shifted
+    // together the comparison would say nothing. Only the SunSoak family
+    // (utciAdj, Shade, Tmrt) responds to the Solar Model.
+    const TmrtStd  = calcTmrt(Ta, dir, dif, glob, elev);
+    const utci     = utciApprox(Ta, TmrtStd, va, eh);
+    // SunSoak: same peer-reviewed polynomial, every input shifted by the
+    // active Solar Model (air temp via taOffset, radiation via dir/dif/glob
+    // factors), then the rain/snow soak penalty on top.
     const Tmrt     = calcTmrt(TaEnv, dirEnv, difEnv, globEnv, elev);
-    const utci     = utciApprox(TaEnv, Tmrt, va, eh);
-    const utciAdj = utci + precipPenalty(precip, snow, va);
+    const utciEnv  = utciApprox(TaEnv, Tmrt, va, eh);
+    const utciAdj  = utciEnv + precipPenalty(precip, snow, va);
     // Shade air temp: what a thermometer in this Solar Model's typical shade
     // (building shadow, beach umbrella, canopy...) would read. Shares
     // SunSoak's TaEnv baseline and env-reduced radiation, so the two stay
@@ -757,7 +768,7 @@ export function computeGlanceSummary(todayRows, profile, variant, skinType, cols
         label: 'Pet at home',
         value: peakIndoor ? `${Math.round(peakIndoor.indoorT)}° at ${hhmm(peakIndoor.iso)}` : '-',
         alert: !!(peakIndoor && peakIndoor.indoorT >= 26),
-        grp: 'felt',
+        grp: 'ambient',
       }] : []),
       ...(show('vehicleT') ? [{
         icon: '🧒',