Air quality is under the global spotlight as new data for 2025 reveals alarming pollution levels in several major cities. According to the latest Air Quality Index (AQI) rankings, cities like Alerce, Chile (AQI 231), and New Delhi, India (AQI 169), are experiencing “unhealthy” to “very unhealthy” air, putting millions at risk The AQI measures pollutants such as PM2.5, PM10, NO2, and O3, with values above 150 considered hazardous for sensitive groups and the general public.
Real-time air quality maps now offer up-to-the-minute data for over 100 countries, allowing residents to check local pollution levels and make informed decisions about outdoor activities The World Health Organization warns that over 90% of the global population breathes air that fails to meet safety standards, with children, the elderly, and those with respiratory conditions most at risk.
While some European cities have made progress in reducing harmful particles, the majority of urban populations worldwide remain exposed to levels above recommended limits, highlighting the urgent need for stricter pollution controls and sustainable urban planning.
