Delhi AQI at 3,000 or 300? Why Different Apps Are Showing Different Pollution Levels

AQI of 387 in India would be nearly 1,500 in US and 10 in UK. Why the range range is so wide

CPCB’s AQI index tops out at 500 and averages over a day. Apps use other scales on hourly or sensor data, which can push Diwali readings into four digits.

Delhi AQI at 3,000 or 300? Why different apps are showing different pollution levels

Delhi's air pollution readings have sparked confusion as government and independent monitoring platforms report sharply different AQI figures, ranging from the 300s to over 3,000. Differences in AQI calculation methods, averaging periods, monitoring networks and sensor technology explain why apps show varying numbers. Here's why Delhi's AQI readings differ and how PM2.5 levels can provide a clearer picture of air pollution.

Delhi AQI Above 1,000 And Below 500 At Same Time? Conflicting Data Explained

Real-time figures from the CPCB's Sameer mobile application and station-level monitoring indicated widespread pockets of extreme toxicity across the national capital

Delhi AQI at 1,000 or 500? Why Indian and American apps show different numbers

Why do some apps show AQI above 1,000-1500 after Diwali, but Indian monitors show 500? Understand India vs US AQI scales and what the readings mean.