diff --git a/mapfile/template.j2 b/mapfile/template.j2
index 1b49d6680f97dba426b6534dd76651cc0b05b6cf..e484d9dc71a5d5d3a819835049a2b3d702d607e8 100644
--- a/mapfile/template.j2
+++ b/mapfile/template.j2
@@ -200,9 +200,9 @@ LAYER
     CLASSITEM "[pixel]"
     CLASS
       NAME "Temperature range"
-      EXPRESSION ([pixel] >= -40 AND [pixel] <= 40)
+      EXPRESSION ([pixel] >= 10  AND [pixel] <= 25)
       STYLE
-        DATARANGE -40 40
+        DATARANGE 10 25
         COLORRANGE 255 255 0 0 0 255
       END
     END