diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/AppMessageHandlerSquare.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/AppMessageHandlerSquare.java
new file mode 100644
index 00000000..d58aaf04
--- /dev/null
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/AppMessageHandlerSquare.java
@@ -0,0 +1,78 @@
+package nodomain.freeyourgadget.gadgetbridge.service.devices.pebble;
+
+import android.util.Pair;
+
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.UUID;
+
+import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEvent;
+import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventSendBytes;
+import nodomain.freeyourgadget.gadgetbridge.model.Weather;
+import nodomain.freeyourgadget.gadgetbridge.model.WeatherSpec;
+
+class AppMessageHandlerSquare extends AppMessageHandler {
+    // "CfgKeyCelsiusTemperature":10001,
+    // CfgKeyConditions":10002,
+    //"CfgKeyWeatherError":10003,
+    // "CfgKeyWeatherMode":10004,
+    // "CfgKeyUseCelsius":10005,"
+    // CfgKeyWeatherLocation":10006,"
+    // "CfgKeyTemperature":10000,
+    //
+    //
+    private static final int KEY_TEMP = 10001; //celsius
+    private static final int KEY_WEATHER = 10002;
+    private static final int KEY_WEATHER_MODE = 10004;
+    private static final int KEY_USE_CELSIUS = 10005; //celsius
+    private static final int KEY_LOCATION = 10006;
+    private static final int KEY_TEMP_F = 10000; //fahrenheit
+
+    AppMessageHandlerSquare(UUID uuid, PebbleProtocol pebbleProtocol) {
+        super(uuid, pebbleProtocol);
+    }
+
+    private byte[] encodeSquareWeatherMessage(WeatherSpec weatherSpec) {
+        if (weatherSpec == null) {
+            return null;
+        }
+
+        ArrayList<Pair<Integer, Object>> pairs = new ArrayList<>(2);
+        pairs.add(new Pair<>(KEY_WEATHER_MODE, (Object) 1));
+        pairs.add(new Pair<>(KEY_WEATHER, (Object) weatherSpec.currentCondition));
+        pairs.add(new Pair<>(KEY_USE_CELSIUS, (Object) 1));
+        pairs.add(new Pair<>(KEY_TEMP, (Object) (weatherSpec.currentTemp - 273)));
+        pairs.add(new Pair<>(KEY_LOCATION, (Object) (weatherSpec.location)));
+        byte[] weatherMessage = mPebbleProtocol.encodeApplicationMessagePush(PebbleProtocol.ENDPOINT_APPLICATIONMESSAGE, mUUID, pairs);
+
+        ByteBuffer buf = ByteBuffer.allocate(weatherMessage.length);
+
+        buf.put(weatherMessage);
+
+        return buf.array();
+    }
+
+    @Override
+    public GBDeviceEvent[] handleMessage(ArrayList<Pair<Integer, Object>> pairs) {
+        // Just ACK
+        GBDeviceEventSendBytes sendBytesAck = new GBDeviceEventSendBytes();
+        sendBytesAck.encodedBytes = mPebbleProtocol.encodeApplicationMessageAck(mUUID, mPebbleProtocol.last_id);
+        return new GBDeviceEvent[]{sendBytesAck};
+    }
+
+    @Override
+    public GBDeviceEvent[] onAppStart() {
+        WeatherSpec weatherSpec = Weather.getInstance().getWeatherSpec();
+        if (weatherSpec == null) {
+            return new GBDeviceEvent[]{null};
+        }
+        GBDeviceEventSendBytes sendBytes = new GBDeviceEventSendBytes();
+        sendBytes.encodedBytes = encodeSquareWeatherMessage(weatherSpec);
+        return new GBDeviceEvent[]{sendBytes};
+    }
+
+    @Override
+    public byte[] encodeUpdateWeather(WeatherSpec weatherSpec) {
+        return encodeSquareWeatherMessage(weatherSpec);
+    }
+}
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleProtocol.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleProtocol.java
index 407b79fe..8223657d 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleProtocol.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleProtocol.java
@@ -362,6 +362,7 @@ public class PebbleProtocol extends GBDeviceProtocol {
     private static final UUID UUID_MARIOTIME = UUID.fromString("43caa750-2896-4f46-94dc-1adbd4bc1ff3");
     private static final UUID UUID_HELTHIFY = UUID.fromString("7ee97b2c-95e8-4720-b94e-70fccd905d98");
     private static final UUID UUID_TREKVOLLE = UUID.fromString("2da02267-7a19-4e49-9ed1-439d25db14e4");
+    private static final UUID UUID_SQUARE = UUID.fromString("cb332373-4ee5-4c5c-8912-4f62af2d756c");
 
     private static final UUID UUID_ZERO = new UUID(0, 0);
 
@@ -380,6 +381,7 @@ public class PebbleProtocol extends GBDeviceProtocol {
         mAppMessageHandlers.put(UUID_MARIOTIME, new AppMessageHandlerMarioTime(UUID_MARIOTIME, PebbleProtocol.this));
         mAppMessageHandlers.put(UUID_HELTHIFY, new AppMessageHandlerHealthify(UUID_HELTHIFY, PebbleProtocol.this));
         mAppMessageHandlers.put(UUID_TREKVOLLE, new AppMessageHandlerTrekVolle(UUID_TREKVOLLE, PebbleProtocol.this));
+        mAppMessageHandlers.put(UUID_SQUARE, new AppMessageHandlerSquare(UUID_SQUARE, PebbleProtocol.this));
     }
 
     private final HashMap<Byte, DatalogSession> mDatalogSessions = new HashMap<>();