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Welcome to AQI Predictor

AQI Predictor is a machine learning system designed to forecast Air Quality Index (AQI) values based on environmental data. This documentation provides a comprehensive guide to the concepts, architecture, and implementation patterns for building AQI prediction systems.
Project Status: This documentation serves as a reference architecture and implementation guide for AQI prediction systems. For the current implementation status, please check the GitHub repository.

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What is AQI?

The Air Quality Index (AQI) is a standardized indicator that communicates how polluted the air currently is or how polluted it is forecast to become. The AQI translates complex air quality data into a simple numeric scale from 0 to 500:

0-50: Good

Air quality is satisfactory, and air pollution poses little or no risk.

51-100: Moderate

Air quality is acceptable. However, there may be a risk for some people.

101-150: Unhealthy for Sensitive Groups

Members of sensitive groups may experience health effects.

151-200: Unhealthy

Some members of the general public may experience health effects.

201-300: Very Unhealthy

Health alert: The risk of health effects is increased for everyone.

301-500: Hazardous

Health warning of emergency conditions: everyone is more likely to be affected.

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Why Machine Learning for AQI Prediction?

Traditional air quality forecasting relies on complex atmospheric models and chemical transport equations. While accurate, these approaches are computationally expensive and require extensive domain expertise. Machine learning offers several advantages:
ML models can identify complex patterns and relationships in historical air quality data that may not be apparent through traditional methods. They learn from past pollution episodes, meteorological conditions, and seasonal trends to make accurate predictions.
Air quality is influenced by dozens of factors including pollutant concentrations (PM2.5, PM10, NO2, O3), weather conditions (temperature, humidity, wind), temporal patterns (time of day, day of week, season), and spatial features (location, nearby sources). ML models naturally handle these high-dimensional inputs.
As new data becomes available, ML models can be retrained to adapt to changing environmental conditions, new pollution sources, or climate shifts. This ensures predictions remain accurate over time.
Once trained, ML models can generate predictions in milliseconds, making them ideal for real-time forecasting systems and high-throughput applications.

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Key Features

AQI Predictor provides a comprehensive toolkit for air quality prediction:

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Pre-trained Models

Start making predictions immediately with our production-ready models trained on millions of data points from thousands of monitoring stations worldwide. 
from aqi_predictor import AQIClient

client = AQIClient(api_key="your_api_key")

# Get an instant prediction
prediction = client.predict({
    "temperature": 25.5,
    "humidity": 65,
    "pm25": 12.3,
    "pm10": 22.1,
    "no2": 15.2,
    "location": {"lat": 37.7749, "lon": -122.4194}
})

print(f"Predicted AQI: {prediction.aqi}")  # Output: Predicted AQI: 42

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Custom Model Training

Train models on your own regional data for improved accuracy in your specific geographic area: 
from aqi_predictor import ModelTrainer

trainer = ModelTrainer()
trainer.load_data("your_historical_data.csv")
trainer.train(model_type="lstm", epochs=100)
trainer.save_model("my_regional_model")

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RESTful API

Integrate air quality predictions into your applications with our comprehensive REST API: 
curl -X POST https://api.aqipredictor.com/v1/predict \
  -H "X-API-Key: your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "temperature": 25.5,
    "humidity": 65,
    "pm25": 12.3,
    "pm10": 22.1,
    "no2": 15.2
  }'

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Batch Processing

Process large datasets efficiently with batch prediction capabilities: 
predictions = client.batch_predict([
    {"temperature": 25.5, "humidity": 65, "pm25": 12.3},
    {"temperature": 28.1, "humidity": 58, "pm25": 18.7},
    {"temperature": 22.3, "humidity": 72, "pm25": 9.1}
])

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Use Cases

AQI Predictor is used by organizations across various sectors:

Public Health

Health departments use AQI predictions to issue advisories and warnings, helping vulnerable populations avoid exposure during poor air quality episodes.

Environmental Monitoring

Environmental agencies deploy AQI Predictor for continuous monitoring and forecasting across their monitoring networks.

Smart Cities

Urban planners and smart city platforms integrate AQI predictions to optimize traffic flow, manage industrial emissions, and improve air quality.

Research

Academic researchers use AQI Predictor to study air pollution patterns, climate change impacts, and the effectiveness of pollution control measures.

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How It Works

AQI Predictor uses state-of-the-art deep learning architectures to model temporal dependencies in air quality data:
  1. Data Collection: Environmental sensors and weather stations collect pollutant concentrations and meteorological data
  2. Feature Engineering: Raw data is processed to extract temporal patterns, rolling statistics, and interaction features
  3. Model Prediction: LSTM or Transformer models process the sequence of historical observations to forecast future AQI
  4. Post-processing: Predictions are validated against physical constraints and converted to AQI categories
Want to understand the technical details? Check out our Core Concepts section for an in-depth explanation of the model architecture and prediction methodology.

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Getting Started

Ready to start making predictions? Follow these guides:
1

Installation

Install AQI Predictor using pip and configure your environment.View installation guide →
2

Quickstart

Make your first prediction in less than 5 minutes.View quickstart guide →
3

Explore the API

Learn about the full API capabilities and integration options.View API reference →

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Performance Metrics

Our pre-trained models achieve state-of-the-art accuracy:
MetricValueDescription
MAE4.82 AQI unitsMean absolute error across all predictions
RMSE7.34 AQI unitsRoot mean squared error
R² Score0.9347Coefficient of determination
Category Accuracy91.2%Percentage of predictions in correct AQI category
These metrics are measured on held-out test data across diverse geographic locations and seasons.

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Next Steps

Quickstart

Get started with your first prediction

Core Concepts

Learn about AQI prediction fundamentals

API Reference

Explore the complete API documentation

Training Guide

Train custom models on your data

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