IoT based weather monitoring system 

1. IoT based weather monitoring
system

2. Introduction
• IoT-based weather monitoring system is a
smart and efficient system designed to
monitor temperature, humidity, air quality
and atmospheric pressure in a certain area.
• Different sensors and technologies are used
• Ability to monitor weather information
remotely

3. Hardware Requirements
Arduino Uno
LDR
MQ-135 sensor 16x2 LCD display
BMP180 sensor
DHT11 sensor
ESP8266 Wi-Fi module DC power adapter

4. Software Requirements

5. Setup and Configuration
• Setup Arduino Uno
• Connect the DHT11 sensor to the Arduino Uno
• Connect the ESP8266 module to the Arduino Uno
• Connect the 16x2 LCD display to the Arduino Uno
• Connect the DC power adaptor to the Arduino Uno
• connect the ESP8266 to Wi-Fi
• Write arduino code
• Setup Blynk Mobile App

6. How It Works
The DHT11 sensor measures ambient temperature and humidity
levels.
The MQ-135 sensor measures air quality by detecting various
pollutants in the air.
The BMP180 sensor measures atmospheric pressure (important for
weather forecasting)
The LDR resistor measures the ambient light intensity.

7. How It Works
• Arduino Uno processes data from sensors
and turns it into meaningful weather-
related information such as temperature,
humidity, air quality index, barometric
pressure and light intensity.
• The processed sensor data is sent to the
LCD display for visual representation.
• The processed sensor data is sent to the
Blynk server using the ESP8266 Wi-Fi
module.
• Being able to view real-time weather data
remotely through the Blynk mobile app.

8. Advantages
• Real-time monitoring
• Early Warning Systems
• Can be remotely monitored and controlled
• Low power consumption
• Data Analysis and Insights
• Easy integration
• Cost-effective
• Accuracy and Precision

9. End