Unable to interact with openweather api, inserting latitude and longitude values, writes wrong latitude. Moreover, if you write the latitude and longitude in numbers, everything works, the latitude and longitude are also determined correctly, I will attach a screen below.

ymaps.ready(locationPub);
function locationPub() {
  var geolocation= ymaps.geolocation,
    coords= [geolocation.latitude, geolocation.longitude];
  let latt= [geolocation.latitude]
  let lonl= [geolocation.longitude]
  fetch("http://api.openweathermap.org/data/2.5/weather?lat={latt}&
lon={lonl}&
appid=2bd27f8ac9131b3542b76fd4f604fd73")
    .then(function(resp) {
      return resp.json()
    })
    .then(function(data) {
      console log(data);
    })
  console log(latt)
  console log(lonl)
}

Can someone tell me what I'm doing wrong?