diff --git a/lib/globals.py b/lib/globals.py
index fbe34b7..b8f25de 100644
--- a/lib/globals.py
+++ b/lib/globals.py
@@ -88,7 +88,9 @@ IP2LOCATION_KEY = None
 if os.path.exists(_IP2LOCATION_KEY_FILE):
     IP2LOCATION_KEY = open(_IP2LOCATION_KEY_FILE, 'r').read().strip()
 
-_WWO_KEY_FILE = os.environ['HOME'] + '/.wwo.key'
+_WWO_KEY_FILE = os.environ.get(
+    "WTTR_WWO_KEY_FILE",
+    os.environ['HOME'] + '/.wwo.key')
 WWO_KEY = "key-is-not-specified"
 if os.path.exists(_WWO_KEY_FILE):
     WWO_KEY = open(_WWO_KEY_FILE, 'r').read().strip()