diff --git a/check_shelly b/check_shelly
index d8fe2dc..c6738c5 100755
--- a/check_shelly
+++ b/check_shelly
@@ -6,7 +6,7 @@ import nagios
 import os
 import urllib.request
 
-CHECKS = ['wifi', 'mqtt', 'memory', 'filesystem']
+CHECKS = ['wifi', 'mqtt', 'memory', 'filesystem', 'temperature']
 #
 WIFI_QUALITY_ERROR = -30
 WIFI_QUALITY_WARNING = -50
@@ -16,6 +16,9 @@ RAM_WARNING = .30
 #
 FS_ERROR = .15
 FS_WARNING = .30
+#
+TMP_WARNING = 50
+TMP_ERROR = 57
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(
@@ -73,3 +76,14 @@ if __name__ == "__main__":
         else:
             status = n.OK
         n.exit(status, f"fs_left: {fs_left} ({fs_size}) > {FS_WARNING} > {FS_ERROR}")
+    elif args.check == 'temperature':
+        temperature = data.get('tmp', {}).get('tC')
+        if temperature is None:
+            status = n.UNKNOWN
+        elif temperature >= TMP_ERROR:
+            status = n.ERROR
+        elif temperature >= TMP_WARNING:
+            status = n.WARNING
+        else:
+            status = n.OK
+        n.exit(status, f"temperature: {temperature}°C")