diff --git a/Cmfcmf/OpenWeatherMap/Util/Unit.php b/Cmfcmf/OpenWeatherMap/Util/Unit.php
index 9ad7a76..577db62 100644
--- a/Cmfcmf/OpenWeatherMap/Util/Unit.php
+++ b/Cmfcmf/OpenWeatherMap/Util/Unit.php
@@ -18,10 +18,12 @@
 
 namespace Cmfcmf\OpenWeatherMap\Util;
 
+use JsonSerializable;
+
 /**
  * The unit class representing a unit object.
  */
-class Unit
+class Unit implements JsonSerializable
 {
     /**
      * @var float The value.
@@ -144,4 +146,19 @@ public function getFormatted()
             return (string)$this->getValue();
         }
     }
+
+    /**
+     * Get Unit properties when encoding to JSON
+     *
+     * @return array
+     */
+    public function jsonSerialize()
+    {
+        return [
+            'value' => $this->getValue(),
+            'unit' => $this->getUnit(),
+            'description' => $this->getDescription(),
+            'precision' => $this->getPrecision()
+        ];
+    }
 }
diff --git a/tests/Util/UnitTest.php b/tests/Util/UnitTest.php
index 358ffdd..c03d09f 100644
--- a/tests/Util/UnitTest.php
+++ b/tests/Util/UnitTest.php
@@ -167,4 +167,10 @@ public function testToString()
 
         $this->assertEquals($this->unit->getFormatted(), $this->unit);
     }
+
+    public function testToJSON()
+    {
+        $unit = new Unit(42.5, "°C", "hot", "2.5");
+        $this->assertEquals(json_encode($unit), '{"value":42.5,"unit":"\u00b0C","description":"hot","precision":2.5}');
+    }
 }