diff --git a/frontend/app/api/city/[name]/route.ts b/frontend/app/api/city/[name]/route.ts
index 5fa5e8ca..67971d38 100644
--- a/frontend/app/api/city/[name]/route.ts
+++ b/frontend/app/api/city/[name]/route.ts
@@ -66,6 +66,9 @@ function buildFallbackCityDetail(name: string, depth: string, summary: Record<st
       sunshine_hours: null,
     },
     multi_model: {},
+    multi_model_daily: {},
+    source_forecasts: {},
+    hourly: { times: [], temps: [], radiation: [] },
     probabilities: {
       mu: null,
       distribution: [],
diff --git a/frontend/components/dashboard/DetailMiniTemperatureChart.tsx b/frontend/components/dashboard/DetailMiniTemperatureChart.tsx
index c6c289ca..1e0c3c03 100644
--- a/frontend/components/dashboard/DetailMiniTemperatureChart.tsx
+++ b/frontend/components/dashboard/DetailMiniTemperatureChart.tsx
@@ -98,9 +98,9 @@ export function DetailMiniTemperatureChart({ detail }: { detail: CityDetail }) {
           x: {
             grid: { color: "rgba(255,255,255,0.03)" },
             ticks: {
-              callback: (_value, index) =>
+              callback: (value, index) =>
                 typeof index === "number" && index % 4 === 0
-                  ? chartData.times[index]
+                  ? String(value)
                   : "",
               color: "#6B7A90",
               font: { size: 10 },
diff --git a/frontend/components/dashboard/scan-terminal/AiCityTemperatureChart.tsx b/frontend/components/dashboard/scan-terminal/AiCityTemperatureChart.tsx
index f8d8c88c..cd1df1e1 100644
--- a/frontend/components/dashboard/scan-terminal/AiCityTemperatureChart.tsx
+++ b/frontend/components/dashboard/scan-terminal/AiCityTemperatureChart.tsx
@@ -174,9 +174,9 @@ export const AiCityTemperatureChart = memo(function AiCityTemperatureChart({ det
           x: {
             grid: { color: "rgba(159, 178, 199, 0.08)" },
             ticks: {
-              callback: (_value, index) =>
+              callback: (value, index) =>
                 typeof index === "number" && index % 3 === 0
-                  ? chartData.times[index]
+                  ? String(value)
                   : "",
               color: "#6B7A90",
               font: { size: 10 },
diff --git a/frontend/lib/chart-utils.ts b/frontend/lib/chart-utils.ts
index 41df65fb..3bdebe6f 100644
--- a/frontend/lib/chart-utils.ts
+++ b/frontend/lib/chart-utils.ts
@@ -370,13 +370,16 @@ export function getTemperatureChartData(
   const hourly = detail.hourly || {};
   const rawTimes = Array.isArray(hourly.times) ? hourly.times : [];
   const rawTemps = Array.isArray(hourly.temps) ? hourly.temps : [];
-  const times = rawTimes
-    .map((time) => String(time || "").trim())
-    .filter(Boolean);
-  const temps = times.map((_, index) => {
-    const value = Number(rawTemps[index]);
-    return Number.isFinite(value) ? value : null;
-  });
+  const validEntries = rawTimes
+    .map((time, index) => ({
+      tail: String(time || "").trim(),
+      value: Number(rawTemps[index]),
+    }))
+    .filter((entry) => entry.tail !== "");
+  const times = validEntries.map((entry) => entry.tail);
+  const temps = validEntries.map((entry) =>
+    Number.isFinite(entry.value) ? entry.value : null,
+  );
   const suppressAnkaraMgmObservation = isTurkishMgmCity(detail);
 
   if (!times.length) return null;
diff --git a/src/utils/telegram_push.py b/src/utils/telegram_push.py
index 6f7fad51..63595af5 100644
--- a/src/utils/telegram_push.py
+++ b/src/utils/telegram_push.py
@@ -990,7 +990,10 @@ def _run_high_freq_airport_cycle(
 
             # 用观测数据时间而非当前本地时间
             airport_cur = city_weather.get("airport_current") or {}
-            obs_local = airport_cur.get("obs_time") or city_weather.get("local_time") or ""
+            amos_obs = (city_weather.get("amos") or {}).get("observation_time_local") or ""
+            if amos_obs and len(str(amos_obs)) >= 16:
+                amos_obs = str(amos_obs)[11:16]  # "2026-05-15 17:32:00" → "17:32"
+            obs_local = amos_obs or airport_cur.get("obs_time") or city_weather.get("local_time") or ""
             message = _build_airport_status_message(city, city_weather, deb_pred, obs_local)
 
             sent = False