diff --git a/aiocloudweather/conversion.py b/aiocloudweather/conversion.py
index 7fc2fa4..1bfcff3 100644
--- a/aiocloudweather/conversion.py
+++ b/aiocloudweather/conversion.py
@@ -1,7 +1,6 @@
 """ A list of all the unit conversions. Many are just approximations."""
 
 from .const import (
-    UnitOfIrradiance,
     UnitOfPrecipitationDepth,
     UnitOfPressure,
     UnitOfSpeed,
diff --git a/aiocloudweather/station.py b/aiocloudweather/station.py
index 0224e37..7403311 100644
--- a/aiocloudweather/station.py
+++ b/aiocloudweather/station.py
@@ -9,7 +9,6 @@
     fahrenheit_to_celsius,
     in_to_mm,
     inhg_to_hpa,
-    lux_to_wm2,
     mph_to_ms,
 )
 from .const import (
diff --git a/tests/test_conversion.py b/tests/test_conversion.py
index 3c5bbf4..ea21dce 100644
--- a/tests/test_conversion.py
+++ b/tests/test_conversion.py
@@ -2,7 +2,6 @@
     fahrenheit_to_celsius,
     in_to_mm,
     inhg_to_hpa,
-    lux_to_wm2,
     mph_to_ms,
 )
 
@@ -25,12 +24,6 @@ def test_in_to_mm():
     assert round(in_to_mm(0.5), 2) == 12.7
 
 
-def test_lux_to_wm2():
-    assert round(lux_to_wm2(100), 2) == 1.08
-    assert round(lux_to_wm2(500), 2) == 5.38
-    assert round(lux_to_wm2(1000), 2) == 10.75
-
-
 def test_mph_to_ms():
     assert round(mph_to_ms(10), 4) == 4.4704
     assert round(mph_to_ms(30), 4) == 13.4112