diff --git a/index.js b/index.js
index c05e3587..e5bc5af2 100644
--- a/index.js
+++ b/index.js
@@ -1157,6 +1157,10 @@ class Encore {
         return this;
     }
 
+    isRuntimeEnvironmentConfigured() {
+        return runtimeConfig !== null;
+    }
+
     /**
      * Clear the runtime environment.
      *
@@ -1213,6 +1217,7 @@ const EncoreProxy = new Proxy(new Encore(), {
             const safeMethods = [
                 'configureRuntimeEnvironment',
                 'clearRuntimeEnvironment',
+                'isRuntimeEnvironmentConfigured',
             ];
 
             if (!webpackConfig && (safeMethods.indexOf(prop) === -1)) {
diff --git a/test/index.js b/test/index.js
index 0516c64f..abc649de 100644
--- a/test/index.js
+++ b/test/index.js
@@ -414,6 +414,22 @@ describe('Public API', () => {
 
     });
 
+    describe('isRuntimeEnvironmentConfigured', () => {
+
+        it('should return true if the runtime environment has been configured', () => {
+            const returnedValue = api.isRuntimeEnvironmentConfigured();
+            expect(returnedValue).to.be.true;
+        });
+
+        it('should return false if the runtime environment has not been configured', () => {
+            api.clearRuntimeEnvironment();
+
+            const returnedValue = api.isRuntimeEnvironmentConfigured();
+            expect(returnedValue).to.be.false;
+        });
+
+    });
+
     describe('Runtime environment proxy', () => {
         beforeEach(() => {
             api.clearRuntimeEnvironment();