The severe air pollution in Delhi is affecting both healthy individuals and those with pre-existing conditions such as asthma, COPD, and heart disease. Symptoms like chest tightness, breathlessness, coughing, and eye irritation are common. Vulnerable groups, including children and the elderly, face heightened risks, including stunted lung growth and reduced lifespan. Long-term exposure to PM2.5 particles has been linked to increased risks of diabetes and hypertension, as these particles can damage blood vessels and affect insulin production.