diff --git a/pool.js b/pool.js
index 574109b..7bda37f 100644
--- a/pool.js
+++ b/pool.js
@@ -226,7 +226,7 @@ function update_temp(temp) {
   }
   status.lock_update = true;
 
-  status.temp = Math.round(temp * 10) / 10;
+  status.temp = Math.round(temp * 2) / 2;
 
   if (status.temp > status.temp_today || status.temp_today === null) {
     status.temp_today = status.temp;