diff --git a/homeassistant/components/airthings_ble/sensor.py b/homeassistant/components/airthings_ble/sensor.py
index 2bc2d5e726a..6abe3e5d174 100644
--- a/homeassistant/components/airthings_ble/sensor.py
+++ b/homeassistant/components/airthings_ble/sensor.py
@@ -105,6 +105,7 @@ SENSORS_MAPPING_TEMPLATE: dict[str, SensorEntityDescription] = {
     ),
     "illuminance": SensorEntityDescription(
         key="illuminance",
+        translation_key="illuminance",
         native_unit_of_measurement=PERCENTAGE,
         state_class=SensorStateClass.MEASUREMENT,
     ),
diff --git a/homeassistant/components/airthings_ble/strings.json b/homeassistant/components/airthings_ble/strings.json
index b7343377a2b..6f17b9a317e 100644
--- a/homeassistant/components/airthings_ble/strings.json
+++ b/homeassistant/components/airthings_ble/strings.json
@@ -33,6 +33,9 @@
       },
       "radon_longterm_level": {
         "name": "Radon longterm level"
+      },
+      "illuminance": {
+        "name": "[%key:component::sensor::entity_component::illuminance::name%]"
       }
     }
   }