simoghost99/Air-Quality-EDA-Casablanca-2014

An exploratory data analysis of 2014 air quality in Hay Hassani. Analyzes pollutants (NO₂, O₃, PM10) & meteorology to uncover trends, exceedances, and seasonal patterns. Includes statistical summaries and visualizations. # Air Quality Analysis - Hay Hassani 2014 A comprehensive analysis of atmospheric pollution data from the Hay Hassani monitoring station in Casablanca, Morocco for the year 2014. This project provides detailed insights into air quality patterns, meteorological relationships, and regulatory compliance assessment according to Moroccan environmental standards. ## Project Overview This analysis examines hourly air quality data including: - **Pollutants**: NO₂, O₃, PM10, SO₂, CO - **Meteorological parameters**: Temperature, Humidity, Wind speed/direction - **Time period**: January 1, 2014 to December 31, 2014 - **Data coverage**: 8,760 hours with excellent completeness (87-99% across pollutants) ## Key Features ### Comprehensive Data Analysis - Statistical summaries and data quality assessment - Temporal patterns (diurnal, monthly, seasonal) - Threshold exceedance analysis - Pollution episode identification ### Meteorological Relationships - Temperature-humidity correlation analysis - Wind rose analysis for pollution source identification - Nocturnal inversion impact assessment - Seasonal pattern analysis ### Regulatory Compliance - Moroccan air quality standards assessment (Decree 2-09-286) - Multi-pollutant compliance checking - Data quality validation for regulatory purposes ## Key Findings ### Regulatory Compliance Status - **Overall Assessment**: Non-compliant with Moroccan standards - **Compliant Pollutants**: NO₂, SO₂, CO - **Non-compliant Pollutants**: PM10, O₃ ### Critical Regulatory Metrics - **PM10**: 90.4th percentile daily = 62.7 μg/m³ (Limit: 50 μg/m³) - Non-compliant - **O₃**: Maximum 8-hour average = 110.2 μg/m³ (Limit: 110 μg/m³) - Non-compliant - **O₃**: 12 consecutive days >65 μg/m³ (Limit: 3 days) - Non-compliant ### Pollution Concentration Patterns - **NO₂**: Highest in winter (31.6 μg/m³), peaks at 22:00 (traffic-related) - **O₃**: Highest in summer (67.6 μg/m³), peaks at 15:00 (photochemical formation) - **PM10**: Autumn/winter peaks (63 …