Google map marker text

i would like to use google map including data weather json and i succeeded to getting data json from server and show marker cities on map . I am trying to make custom Google map marker , l mean l want to shows text Temperature on map not marker .

What i have in my app

Here simple example what i mean .

any idea what should l do ?

My code :

  async ngOnInit() {
    await this.platform.ready();
    await this.loadMap()

    await this.getData()
  }

      getData(){

        this.http.get('xxxxxxxxxxxxxxxxxxx',{},{}).then(data=>{

        let DataJson = JSON.parse(data.data)

        for (let datas of DataJson['features']) {

          this.points.push({ lng: datas.geometry.coordinates[0], lat: datas.geometry.coordinates[1] });

        }

        for (let i = 0; i <  DataJson.features.length; i++) {

          let coords = DataJson.features[i].geometry.coordinates;

          let latLng = new LatLng(coords[1], coords[0]);
          let icoa = DataJson.features[i].properties.id


          let markera: Marker = this.map.addMarkerSync({
            position: latLng,
            title:icoa

          })
        }



        })

      }

      loadMap() {

        let mapOptions: GoogleMapOptions = {
          camera: {
             target: {
               lat: 33.263,
               lng: 44.232
             },
             zoom: 6,
           }
        };

        this.map = GoogleMaps.create('map_canvas', mapOptions);
      }