Report · 01 August 2026

From 89 to 81. The 95 per cent interval runs -11.4 to -2.5 points, on 42 matched stations.

216

AQI at the worst station

Punjabi Bagh, Poor

Analysis window: 10 AM 31st July to 10 AM 1st August
Baseline: YoY baseline: avg of 25th Jul - 8th Aug 2025 (same +/-7 days), matched stations

Today's full report

Roughly twelve pages: the verdict on today's air, every monitoring station, the weather versus policy attribution, the full year of de-weathered trends, and the annexures behind each number.

Download the daily reportPDF, 1.2 MB

Narrated in Hindi. Runs 118 seconds.

The evidence

The daily residual: this year minus last year

■ Red: the de-weathered residual, weather removed. Above the zero line, pollution was higher than last year; below the zero line, it was lower.

Each point is a residual: that day's PM10 level minus the same period last year, after the model removes the effect of weather. The shaded band is the uncertainty around each day. Above the zero line means Delhi's air was genuinely worse than last year, and not merely unluckier with the wind; below it means genuinely cleaner. The run begins 30 May 2026.

The findings

What today's report says

Against yesterday: the one-day move

From 89 to 81. The 95 per cent interval runs -11.4 to -2.5 points, on 42 matched stations.

Against last year: the observed reading

Today 81 against 96 on the same date last year, matched stations. The interval runs -20.3 to 0.5 points, so the honest reading is level, not better.

The weather-corrected verdict

Observed, the year reads -14 points, level. Corrected for weather it reads +6.6. 6 of 6 pollutants show no real improvement.

The worst station in the city today

Poor, on Ozone. Last year this station read 82 on the same date; the change is 134.1 points.

A caution we publish daily

Gas data carries documented unit-inconsistency (peer-reviewed international research, 2025); we lead on the reliable PM2.5/PM10.