SMART ENVIRONMENTAL MONITORING
Real-time environmental sensing, cloud monitoring, historical analysis and automated predictive alerts.
WHY THIS PROJECT MATTERS
Air conditions can change because of traffic, haze, smoke, indoor activity and other sources. This prototype continuously observes environmental conditions and makes unusual gas changes easier to notice.
URBAN AIR
Haze, traffic and smoke can change the air around populated areas. Continuous sensing helps make environmental changes visible through live readings.
HEALTHIER SPACES
ENVIRONMENTAL BALANCE
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CLEANER SURROUNDINGS
EARLY AWARENESS
The Smart Air Monitor records temperature, humidity and MQ-135 raw gas readings while classifying the prototype condition as NORMAL, MODERATE or HIGH.
CORE SENSING HARDWARE
Three core components power the prototype. Click any card to reveal what it does, then click again to return to the image.
Provides the raw analogue gas reading used by this prototype to identify relative changes in surrounding gas conditions.
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The main controller reads the sensors, processes the prototype status and transfers monitoring data through its Wi-Fi connection.
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Measures ambient temperature and relative humidity so gas readings can be viewed together with surrounding conditions.
Click to returnFROM ENVIRONMENT TO DATA
Continue into the live dashboard for current readings, historical charts, recorded alerts and short-term trend prediction.
Environmental and component imagery is used from Wikimedia Commons and Creative Commons sources. ESP32: Ubahnverleih / Wikimedia Commons (CC0). DHT11: Georgeinza / Wikimedia Commons (CC BY-SA 4.0). Kuala Lumpur haze: Benjy8769 and servus / Wikimedia Commons (CC BY-SA). MQ-135 image: Embarcados, project by Sthefania Fernandes (CC BY-SA 4.0).
ENVIRONMENTAL MONITORING
CURRENT ENVIRONMENTAL STATUS
-- °C
DHT11 Temperature Reading-- %
DHT11 Relative Humidity--
MQ-135 Raw Sensor ReadingGas readings are elevated. Continue monitoring the environment.
Please improve ventilation and move away from the affected area.
SENSOR HISTORY
Recent environmental readings stored in Firebase Realtime Database.
RECORDED EVENTS
Recorded HIGH gas events generated by the monitoring system.
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TREND ANALYSIS
Simple linear trend analysis based on recent MQ-135 readings.
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MQ-135 Raw Reading--
Short-Term EstimateANALYSING...
ANALYSING...
PROJECT INFORMATION
The Smart Air Monitoring System is an IoT-based prototype designed to monitor environmental conditions in real time, store historical readings in the cloud, detect unusual gas levels and provide short-term trend prediction.
Provide real-time environmental monitoring and early warning of increased gas levels using IoT sensors, cloud storage and a responsive web dashboard.
ESP32 â Microcontroller and Wi-Fi communication
DHT11 â Temperature and humidity sensing
MQ-135 â Gas-sensitive environmental sensor
Firebase Realtime Database stores current sensor readings, historical records and authenticated gas-alert events.
Temperature in degrees Celsius
Relative humidity percentage
MQ-135 raw gas sensor readings
NORMAL 0 â 1300
MODERATE 1301 â 1800
HIGH Above 1800
Recent historical MQ-135 readings are analysed using a simple linear trend calculation to estimate the next short-term reading and status.
A native iPhone application built using Swift and SwiftUI, connected to Firebase Realtime Database for live monitoring, historical charts, alerts and short-term trend prediction.
MQ-135 values displayed by this system are raw sensor readings. They are used for prototype-level relative gas monitoring and should not be interpreted as official AQI or pollutant concentration values such as ppm without proper calibration.