diff --git a/scripts/dashboards_render_atlas.py b/scripts/dashboards_render_atlas.py
index cd8fdc6d..42857e88 100644
--- a/scripts/dashboards_render_atlas.py
+++ b/scripts/dashboards_render_atlas.py
@@ -1631,16 +1631,16 @@ def build_overview():
                 "mode": "absolute",
                 "steps": [
                     {"color": "green", "value": None},
-                    {"color": "yellow", "value": 6},
-                    {"color": "orange", "value": 12},
-                    {"color": "red", "value": 24},
+                    {"color": "yellow", "value": 20},
+                    {"color": "orange", "value": 40},
+                    {"color": "red", "value": 50},
                 ],
             },
         )
     )
     panels[-1]["links"] = link_to("atlas-storage")
     panels[-1]["description"] = (
-        "Oldest successful backup age in hours by PVC. PVCs with missing or unhealthy backup state are forced to 999h so the red bars stay visible in the overview."
+        "Oldest successful backup age in hours by PVC with nightly cadence thresholds (green <=20h, yellow <40h, orange <50h, red >=50h). PVCs with missing or unhealthy backup state are forced to 999h so critical bars stay visible."
     )
 
     panels.append(
diff --git a/services/monitoring/dashboards/atlas-overview.json b/services/monitoring/dashboards/atlas-overview.json
index fa6f8ec5..cc24c27a 100644
--- a/services/monitoring/dashboards/atlas-overview.json
+++ b/services/monitoring/dashboards/atlas-overview.json
@@ -2053,15 +2053,15 @@
               },
               {
                 "color": "yellow",
-                "value": 6
+                "value": 20
               },
               {
                 "color": "orange",
-                "value": 12
+                "value": 40
               },
               {
                 "color": "red",
-                "value": 24
+                "value": 50
               }
             ]
           }
@@ -2097,7 +2097,7 @@
           "targetBlank": true
         }
       ],
-      "description": "Oldest successful backup age in hours by PVC. PVCs with missing or unhealthy backup state are forced to 999h so the red bars stay visible in the overview."
+      "description": "Oldest successful backup age in hours by PVC with nightly cadence thresholds (green <=20h, yellow <40h, orange <50h, red >=50h). PVCs with missing or unhealthy backup state are forced to 999h so critical bars stay visible."
     },
     {
       "id": 30,
diff --git a/services/monitoring/grafana-dashboard-overview.yaml b/services/monitoring/grafana-dashboard-overview.yaml
index 4d0824d4..bfa84784 100644
--- a/services/monitoring/grafana-dashboard-overview.yaml
+++ b/services/monitoring/grafana-dashboard-overview.yaml
@@ -2062,15 +2062,15 @@ data:
                   },
                   {
                     "color": "yellow",
-                    "value": 6
+                    "value": 20
                   },
                   {
                     "color": "orange",
-                    "value": 12
+                    "value": 40
                   },
                   {
                     "color": "red",
-                    "value": 24
+                    "value": 50
                   }
                 ]
               }
@@ -2106,7 +2106,7 @@ data:
               "targetBlank": true
             }
           ],
-          "description": "Oldest successful backup age in hours by PVC. PVCs with missing or unhealthy backup state are forced to 999h so the red bars stay visible in the overview."
+          "description": "Oldest successful backup age in hours by PVC with nightly cadence thresholds (green <=20h, yellow <40h, orange <50h, red >=50h). PVCs with missing or unhealthy backup state are forced to 999h so critical bars stay visible."
         },
         {
           "id": 30,