According to the Commission for Air Quality Management (CAQM), Delhi experienced its cleanest air in six years this April, marking a significant improvement in air quality compared to previous years.
Air Quality Improvement
In April 2024, the capital recorded 23 days with an Air Quality Index (AQI) below 201, indicating ‘good’ to ‘moderate’ air quality. This surpasses the AQI recorded in the same period in 2018, 2019, 2021, and 2023. Notably, the city experienced even better air quality in April 2020, attributed to Covid-related restrictions.
AQI Categories and Impact
The AQI categories range from ‘good’ (0-50) to ‘severe’ (201 and above). While ‘good’ air quality has minimal impact, ‘moderate’ air quality may cause discomfort to those with respiratory conditions. Delhi recorded seven days of ‘poor’ to ‘severe’ AQI in April 2024, lower than previous years.
Factors Contributing to Better Air Quality
CAQM attributed the improved air quality to favorable meteorological conditions and collaborative efforts by stakeholders to control air pollution in the National Capital Region (NCR).
Weather Conditions
Delhi experienced no heatwave in April 2024, similar to April 2023, with an average maximum temperature slightly above normal. Additionally, the city faced a significant rainfall deficit of 54%, receiving only 7.5 mm of rainfall compared to the normal of 16.3 mm.
Conclusion
The data highlights a positive trend in Delhi’s air quality, indicating progress in pollution control measures. However, the city still faces challenges such as weather variability and rainfall deficits, necessitating continued efforts to maintain and improve air quality.
