diff --git a/visualizer/data.py b/visualizer/data.py
index 6472b8ba904fc30676b04aaaf1753a0a25c5d141..10a79df917e7f3728312b2c2ce774013a0523319 100644
--- a/visualizer/data.py
+++ b/visualizer/data.py
@@ -13,7 +13,7 @@ from .records import get_link
 Measurement = make_dataclass('Measurement',
                              ['slug', 'field', 'title', 'units'])
 measurements = {m.slug: m for m in (
-    Measurement('temperature', 1, 'Temperature', 'C'),
+    Measurement('temperature', 1, 'Temperature', '\u00b0C'),
     Measurement('pressure', 2, 'Pressure', 'hPa'),
     Measurement('wind-speed', 3, 'Wind Speed', 'm/s'),
 )}