diff --git a/.gitignore b/.gitignore
index b6b402ed9..21c218cae 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,5 +6,6 @@ npm-debug.log
 package-lock.json
 yarn-error.log
 *.bkp
+.env
 
 week3/prep-exercise/server-demo/
diff --git a/assignments/hackyourtemperature/__tests__/app.test.js b/assignments/hackyourtemperature/__tests__/app.test.js
new file mode 100644
index 000000000..a00486210
--- /dev/null
+++ b/assignments/hackyourtemperature/__tests__/app.test.js
@@ -0,0 +1,47 @@
+import { app } from "../app.js";
+import supertest from "supertest";
+
+const request = supertest(app);
+
+describe("GET /", () => {
+
+  it("Send welcome page", async () => {
+    const response = await request.get("/");
+    expect(response.status).toBe(200);
+    expect(response.text).toBe('Hello from backend to frontend');
+  });
+
+});
+
+describe("POST /weather", () => {
+
+  it("Valid city name provided", async () => {
+    const response = await request.post("/weather").send({
+      city: "Maastricht",
+    });
+    expect(response.status).toBe(200);
+    expect(response.body).toHaveProperty("cityName");
+    expect(response.body.cityName).toContain("Maastricht");
+  });
+
+
+  it("City could not be found", async () => {
+    const response = await request.post("/weather").send({
+      city: "gfdhsdfdahh",
+    });
+    expect(response.status).toBe(404);
+    expect(response.body).toHaveProperty("weatherText");
+    expect(response.body).toEqual({ weatherText: 'City name not found!' });
+  });
+
+  it("No city name provided", async () => {
+    const response = await request.post("/weather").send({
+      city: "",
+    });
+    expect(response.status).toBe(400);
+    expect(response.body).toHaveProperty("weatherText");
+    expect(response.body).toEqual({ weatherText: "City name required" });
+  });
+
+});
+
diff --git a/assignments/hackyourtemperature/app.js b/assignments/hackyourtemperature/app.js
new file mode 100644
index 000000000..aeacab640
--- /dev/null
+++ b/assignments/hackyourtemperature/app.js
@@ -0,0 +1,33 @@
+import express from 'express';
+import { keys } from './sources/keys.js';
+
+export const app = express();
+
+app.use(express.json());
+
+app.get('/', async (req, res) => {
+  return res.status(200).send('Hello from backend to frontend');
+});
+
+app.post('/weather', async (req, res) => {
+  const { city } = req.body;
+
+  if (!city) {
+    return res.status(400).json({ weatherText: "City name required" });
+  }
+
+  try {
+    const response = await fetch(`https://api.openweathermap.org/data/2.5/weather?q=${city}&units=metric&appid=${keys.API_KEY}`);
+    const data = await response.json();
+    console.log(data)
+
+    if (Number(data.cod) === 404) {
+      return res.status(404).json({ weatherText: 'City name not found!' });
+    }
+    
+    return res.status(200).json({ cityName: `${data.name}`, temperature: `${data.main.temp}`});
+
+  } catch (err) {
+    return res.status(500).send('Error fetching');
+  }
+});
\ No newline at end of file
diff --git a/assignments/hackyourtemperature/babel.config.cjs b/assignments/hackyourtemperature/babel.config.cjs
new file mode 100644
index 000000000..fbb629af6
--- /dev/null
+++ b/assignments/hackyourtemperature/babel.config.cjs
@@ -0,0 +1,13 @@
+module.exports = {
+  presets: [
+    [
+      // This is a configuration, here we are telling babel what configuration to use
+      "@babel/preset-env",
+      {
+        targets: {
+          node: "current",
+        },
+      },
+    ],
+  ],
+};
diff --git a/assignments/hackyourtemperature/jest.config.js b/assignments/hackyourtemperature/jest.config.js
new file mode 100644
index 000000000..19ba9649e
--- /dev/null
+++ b/assignments/hackyourtemperature/jest.config.js
@@ -0,0 +1,8 @@
+export default {
+  // Tells jest that any file that has 2 .'s in it and ends with either js or jsx should be run through the babel-jest transformer
+  transform: {
+    "^.+\\.jsx?$": "babel-jest",
+  },
+  // By default our `node_modules` folder is ignored by jest, this tells jest to transform those as well
+  transformIgnorePatterns: [],
+};
diff --git a/assignments/hackyourtemperature/package.json b/assignments/hackyourtemperature/package.json
new file mode 100644
index 000000000..3dc0605dd
--- /dev/null
+++ b/assignments/hackyourtemperature/package.json
@@ -0,0 +1,26 @@
+{
+  "name": "hackyourtemperature",
+  "version": "1.0.0",
+  "main": "server.js",
+  "scripts": {
+    "test": "jest",
+    "start": "node server.js"
+  },
+  "keywords": [],
+  "type": "module",
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "dotenv": "^16.4.7",
+    "express": "^4.21.2",
+    "express-handlebars": "^8.0.1",
+    "node-fetch": "^3.3.2"
+  },
+  "devDependencies": {
+    "@babel/preset-env": "^7.26.9",
+    "babel-jest": "^29.7.0",
+    "jest": "^29.7.0",
+    "supertest": "^7.0.0"
+  }
+}
diff --git a/assignments/hackyourtemperature/server.js b/assignments/hackyourtemperature/server.js
new file mode 100644
index 000000000..e8e6e704f
--- /dev/null
+++ b/assignments/hackyourtemperature/server.js
@@ -0,0 +1,7 @@
+import { app } from "./app.js";
+
+const PORT = 3000;
+
+app.listen(PORT, () => {
+  console.log(`Server listening on port ${PORT}`);
+});
\ No newline at end of file
diff --git a/assignments/hackyourtemperature/sources/keys.js b/assignments/hackyourtemperature/sources/keys.js
new file mode 100644
index 000000000..5c2f0a851
--- /dev/null
+++ b/assignments/hackyourtemperature/sources/keys.js
@@ -0,0 +1,5 @@
+import dotenv from 'dotenv';
+
+dotenv.config();
+
+export const keys = process.env;
\ No newline at end of file