Arduino Weather Station Web Server


Arduino Weather Station Web Server is a project that combines the power of Arduino microcontrollers and the Internet to create a weather monitoring system. With this setup, you can gather data about temperature, humidity, and atmospheric pressure and display it on a web page accessible from anywhere.


To build this weather station, you’ll need an Arduino board, such as the Arduino Uno, along with a temperature and humidity sensor, like the DHT11 or DHT22. Additionally, you’ll require a barometric pressure sensor, such as the BMP180 or BMP280, and a Wi-Fi module, such as the ESP8266 or ESP32, to connect your Arduino to the internet.


To program the Arduino, you’ll need the Arduino IDE installed on your computer. You’ll also need to install the necessary libraries for the sensors and Wi-Fi module. The libraries provide the code required to communicate with the sensors and connect to the internet. You can easily find these libraries in the Arduino Library Manager.

Connecting the Sensors

Start by connecting the temperature and humidity sensor to the Arduino board. Most sensors have three pins: VCC, GND, and signal. Connect VCC to 5V on the Arduino, GND to GND, and the signal pin to a digital input pin on the Arduino. Repeat this process for the barometric pressure sensor, connecting its VCC to 5V, GND to GND, and the signal pin to another digital input pin.

Setting Up the Web Server

After connecting the sensors, you’ll need to set up the web server on your Arduino. This involves configuring the Wi-Fi module to connect to your local network and assigning an IP address to your Arduino. Once connected, you can use the Wi-Fi module to create a web server that listens for incoming requests.

Collecting Data

With the web server set up, you can now collect data from the sensors. Use the appropriate libraries to read the temperature, humidity, and atmospheric pressure values from the sensors. Store this data in variables and update them periodically.

Displaying Data on the Web Page

Next, you’ll need to create a web page to display the weather data. You can use HTML, CSS, and JavaScript to design a simple and user-friendly interface. The web page should retrieve the sensor data from the Arduino using HTTP requests and update the displayed values in real-time.

Accessing the Web Page

Once the weather station is up and running, you can access the web page from any device connected to the same network. Open a web browser and enter the IP address assigned to your Arduino. The web page should load, showing the current temperature, humidity, and atmospheric pressure.

Additional Features

You can enhance your weather station by adding additional features. For example, you can include a graph to display historical data or incorporate an alarm system to notify you of extreme weather conditions. The possibilities are endless, limited only by your creativity and programming skills.


The Arduino Weather Station Web Server project provides a fun and educational way to learn about microcontrollers, sensors, and web development. By combining these technologies, you can create a weather monitoring system that is accessible from anywhere in the world. Whether you’re a hobbyist or a student, this project offers a great opportunity to expand your knowledge and skills.

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