diff --git a/routes/adjustmentMethods/EToAdjustmentMethod.ts b/routes/adjustmentMethods/EToAdjustmentMethod.ts
index d1c0fa2..f9af4fe 100644
--- a/routes/adjustmentMethods/EToAdjustmentMethod.ts
+++ b/routes/adjustmentMethods/EToAdjustmentMethod.ts
@@ -54,7 +54,7 @@ async function calculateEToWateringScale(
 	return {
 		scale: scale,
 		rawData: {
-			weatherProvider: etoData.weatherProvider,
+			wp: etoData.weatherProvider,
 			eto: Math.round( eto * 1000) / 1000,
 			radiation: Math.round( etoData.solarRadiation * 100) / 100,
 			minT: Math.round( etoData.minTemp ),
diff --git a/routes/adjustmentMethods/ManualAdjustmentMethod.ts b/routes/adjustmentMethods/ManualAdjustmentMethod.ts
index 701123f..f3663b7 100644
--- a/routes/adjustmentMethods/ManualAdjustmentMethod.ts
+++ b/routes/adjustmentMethods/ManualAdjustmentMethod.ts
@@ -8,7 +8,7 @@ async function calculateManualWateringScale( ): Promise< AdjustmentMethodRespons
 	return {
 		scale: undefined,
 		rawData: {
-			weatherProvider: "Manual",
+			wp: "Manual",
 		},
 		wateringData: undefined
 	}
diff --git a/routes/adjustmentMethods/ZimmermanAdjustmentMethod.ts b/routes/adjustmentMethods/ZimmermanAdjustmentMethod.ts
index ccc0852..508525e 100644
--- a/routes/adjustmentMethods/ZimmermanAdjustmentMethod.ts
+++ b/routes/adjustmentMethods/ZimmermanAdjustmentMethod.ts
@@ -30,7 +30,7 @@ async function calculateZimmermanWateringScale(
 	*/
 
 	const rawData = {
-		weatherProvider: wateringData.weatherProvider,
+		wp: wateringData.weatherProvider,
 		h: wateringData ? Math.round( wateringData.humidity * 100) / 100 : null,
 		p: wateringData ? Math.round( wateringData.precip * 100 ) / 100 : null,
 		t: wateringData ? Math.round( wateringData.temp * 10 ) / 10 : null,
diff --git a/routes/weatherProviders/DarkSky.ts b/routes/weatherProviders/DarkSky.ts
index f8133b7..b2e8371 100644
--- a/routes/weatherProviders/DarkSky.ts
+++ b/routes/weatherProviders/DarkSky.ts
@@ -60,7 +60,7 @@ export default class DarkSkyWeatherProvider extends WeatherProvider {
 		}
 
 		return {
-			weatherProvider: "DarkSky",
+			weatherProvider: "DS",
 			temp: totals.temp / 24,
 			humidity: totals.humidity / 24 * 100,
 			precip: totals.precip,
@@ -147,7 +147,7 @@ export default class DarkSkyWeatherProvider extends WeatherProvider {
 		}
 
 		return {
-			weatherProvider: "DarkSky",
+			weatherProvider: "DS",
 			periodStartTime: historicData.hourly.data[ 0 ].time,
 			minTemp: historicData.daily.data[ 0 ].temperatureMin,
 			maxTemp: historicData.daily.data[ 0 ].temperatureMax,
diff --git a/routes/weatherProviders/WUnderground.ts b/routes/weatherProviders/WUnderground.ts
index be30b5d..199364b 100644
--- a/routes/weatherProviders/WUnderground.ts
+++ b/routes/weatherProviders/WUnderground.ts
@@ -37,7 +37,7 @@ export default class WUnderground extends WeatherProvider {
 		}
 
 		return {
-			weatherProvider: "WUnderground",
+			weatherProvider: "WU",
 			temp: totals.temp / samples.length,
 			humidity: totals.humidity / samples.length,
 			precip: totals.precip,
diff --git a/test/expected.json b/test/expected.json
index e1752d6..aa5d5e2 100644
--- a/test/expected.json
+++ b/test/expected.json
@@ -3,7 +3,7 @@
 		"01002": {
 			"tz": 32,
 			"rawData": {
-				"weatherProvider": "Manual"
+				"wp": "Manual"
 			},
 			"sunrise": 332,
 			"sunset": 1203,
@@ -23,7 +23,7 @@
 				"p": 1.09,
 				"t": 70.8,
 				"raining": 1,
-				"weatherProvider": "OWM"
+				"wp": "OWM"
 			},
 			"errCode": 0
 		}
diff --git a/types.ts b/types.ts
index 72a480d..a026208 100644
--- a/types.ts
+++ b/types.ts
@@ -55,7 +55,7 @@ export interface WeatherDataForecast {
 
 export interface BaseWateringData {
     /** The WeatherProvider that generated this data. */
-    weatherProvider: WeatherProviderId;
+    weatherProvider: WeatherProviderShortId;
     /** The total precipitation over the window (in inches). */
     precip: number;
 }
@@ -75,3 +75,4 @@ export interface ZimmermanWateringData extends BaseWateringData {
 }
 
 export type WeatherProviderId = "OWM" | "DarkSky" | "local" | "mock" | "WUnderground";
+export type WeatherProviderShortId = "OWM" | "DS" | "local" | "mock" | "WU";