diff --git a/src/main/kotlin/application/presenter/database/serialization/DBSerialization.kt b/src/main/kotlin/application/presenter/database/serialization/DBSerialization.kt
index 900dbcc3..39c9646f 100644
--- a/src/main/kotlin/application/presenter/database/serialization/DBSerialization.kt
+++ b/src/main/kotlin/application/presenter/database/serialization/DBSerialization.kt
@@ -10,6 +10,7 @@ package application.presenter.database.serialization
 
 import application.presenter.database.model.TimeSeriesDataType
 import application.presenter.database.model.TimeSeriesRoomEnvironmentalData
+import application.presenter.database.model.TimeSeriesRoomMetadata
 import entity.environment.Humidity
 import entity.environment.LightUnit
 import entity.environment.Luminosity
@@ -17,6 +18,8 @@ import entity.environment.Presence
 import entity.environment.Temperature
 import entity.environment.TemperatureUnit
 import entity.zone.RoomEnvironmentalData
+import entity.zone.RoomID
+import java.time.Instant
 
 /**
  * Extension method that allows to convert a map of [TimeSeriesDataType] -> [TimeSeriesRoomEnvironmentalData]
@@ -40,3 +43,45 @@ fun Map<TimeSeriesDataType, TimeSeriesRoomEnvironmentalData?>.toRoomEnvironmenta
         },
         presence = this[TimeSeriesDataType.PRESENCE]?.let { Presence(it.value > 0) }
     )
+
+/**
+ * Extension method that allows to convert [RoomEnvironmentalData] in a map of [TimeSeriesRoomEnvironmentalData].
+ */
+fun RoomEnvironmentalData.toTimeSeries(dateTime: Instant, roomId: RoomID) = mapOf(
+    TimeSeriesDataType.TEMPERATURE to this.temperature?.let {
+        TimeSeriesRoomEnvironmentalData(
+            dateTime,
+            TimeSeriesRoomMetadata(
+                roomId,
+                TimeSeriesDataType.TEMPERATURE,
+                it.unit.toString()
+            ),
+            it.value
+        )
+    },
+    TimeSeriesDataType.HUMIDITY to this.humidity?.let {
+        TimeSeriesRoomEnvironmentalData(
+            dateTime,
+            TimeSeriesRoomMetadata(roomId, TimeSeriesDataType.HUMIDITY),
+            it.percentage
+        )
+    },
+    TimeSeriesDataType.LUMINOSITY to this.luminosity?.let {
+        TimeSeriesRoomEnvironmentalData(
+            dateTime,
+            TimeSeriesRoomMetadata(
+                roomId,
+                TimeSeriesDataType.LUMINOSITY,
+                it.unit.toString()
+            ),
+            it.value
+        )
+    },
+    TimeSeriesDataType.PRESENCE to this.presence?.let {
+        TimeSeriesRoomEnvironmentalData(
+            dateTime,
+            TimeSeriesRoomMetadata(roomId, TimeSeriesDataType.PRESENCE),
+            it.presenceDetected.let { p -> if (p) 1.0 else 0.0 }
+        )
+    }
+).filter { it.value != null }
diff --git a/src/main/kotlin/infrastructure/database/DatabaseManager.kt b/src/main/kotlin/infrastructure/database/DatabaseManager.kt
index 908d9c68..b04a6700 100644
--- a/src/main/kotlin/infrastructure/database/DatabaseManager.kt
+++ b/src/main/kotlin/infrastructure/database/DatabaseManager.kt
@@ -16,6 +16,7 @@ import application.presenter.database.model.TimeSeriesMedicalTechnologyUsage
 import application.presenter.database.model.TimeSeriesRoomEnvironmentalData
 import application.presenter.database.model.TimeSeriesRoomMetadata
 import application.presenter.database.serialization.toRoomEnvironmentalData
+import application.presenter.database.serialization.toTimeSeries
 import com.mongodb.MongoException
 import com.mongodb.client.MongoCollection
 import entity.medicaltechnology.MedicalTechnology
@@ -82,12 +83,35 @@ class DatabaseManager(customConnectionString: String? = null) : RoomDatabaseMana
         roomId: RoomID,
         environmentalData: RoomEnvironmentalData,
         dateTime: Instant
-    ): Boolean {
-        // insert new data to the room_environmental_data collection
-        // update environmental data to the room document inside the room collection
-        // the environmental data collection has the room ID associated to the environmental data and a timestamp
-        // this data model must be created within this package because it is used only here.
-        TODO("Not yet implemented")
+    ): Boolean = this.roomTimeSeriesCollection.safeMongoDbWrite(mapOf()) {
+        // update time series
+        val updatesMap = environmentalData.toTimeSeries(dateTime, roomId)
+        insertMany(updatesMap.values.map { it })
+        updatesMap
+    }.let {
+        // update room info with the latest values
+        this@DatabaseManager.roomCollection.safeMongoDbWrite(false) {
+            updateOne(
+                Room::id eq roomId,
+                it.toRoomEnvironmentalData().let { roomEnvData ->
+                    listOfNotNull(
+                        roomEnvData.temperature?.let { t ->
+                            setValue(Room::environmentalData / RoomEnvironmentalData::temperature, t)
+                        },
+                        roomEnvData.humidity?.let { t ->
+                            setValue(Room::environmentalData / RoomEnvironmentalData::humidity, t)
+                        },
+                        roomEnvData.luminosity?.let { t ->
+                            setValue(Room::environmentalData / RoomEnvironmentalData::luminosity, t)
+                        },
+                        roomEnvData.presence?.let { t ->
+                            setValue(Room::environmentalData / RoomEnvironmentalData::presence, t)
+                        }
+                    )
+                }
+            )
+            true
+        }
     }
 
     override fun saveMedicalTechnology(medicalTechnology: MedicalTechnology): Boolean =