रिपोर्ट · 10 November 2026

439 AQI at IIT Delhi, 24 hours to 4 PM, 10 November 2026, the worst monitor in Delhi today, Severe on CPCB's documented formula, and PM10 set that figure. 7.2 lakh people live within 4 km of it.

320.7

TODAY

Delhi's AQI calculated with CPCB's documented formula, the mean of 58 stations.

2.06 crore

NEAR POOR OR WORSE

Within 4 km of 56 Poor-or-worse monitors: 91.0 per cent of Delhi, every pollutant counted.

10.1x

THE WHO 24-HOUR LINE

Delhi's PM2.5 today, as measured, against the WHO 24-hour guideline.

यहाँ के एक्यूआई आँकड़े उसी फ़ॉर्मूले से निकाले गए हैं, जो केंद्रीय प्रदूषण नियंत्रण बोर्ड (CPCB) अपने वायु गुणवत्ता सूचकांक के लिए प्रकाशित करता है। यह फ़ॉर्मूला CPCB ने अपने दस्तावेज़ों में दिया है: CPCB का नोट: एक्यूआई कैसे निकाला जाता है; CPCB का एक्यूआई कैलकुलेटर।
यह रिपोर्ट अंग्रेज़ी में है।

पूरी रिपोर्ट

इस दिन की पूरी लिखित रिपोर्ट, हर आँकड़े और उसके स्रोत के साथ।

रोज़ की रिपोर्ट डाउनलोड करेंPDF, 4.1 MB

दिन का सार

Delhi's AQI was 320.7, Very Poor, calculated with CPCB's documented formula as the mean of 58 stations' AQIs (CPCB's note "How is AQI calculated?" and its AQI Calculator; page 28 sets out the formula). As measured, 58 of the 58 monitors reading PM2.5 were above the WHO 24-hour guideline of 15 µg/m³. Above AQI 200 today: 56 stations, IIT Delhi 439, NSIT Dwarka 423, Chandni Chowk 392, Pusa (IITM) 387, and 52 more in the station table. Poor or worse air reached 2.06 crore people within 4 km of their monitor today, 91.0 per cent of Delhi.

The year so far, 1 January to 9 November: the cleaner days of 2026 have been the dirtiest for these dates since 2019, because three days in four read above 107.9 on the particle AQI, against 95.1 on the same dates of 2025. The middle day reads 157.9 against 146.7 on the same dates last year. On an average day, 29.3 per cent of Delhi's reporting monitors, about 13 of 45, sat above 200 on the particle AQI.

निष्कर्ष

रिपोर्ट क्या कहती है

यह रिपोर्ट अंग्रेज़ी में है।

Against yesterday: the one-day move

From 414 to 311. On the 47 stations that reported on both days, the 95 per cent interval runs -117.7 to -90.1 points.

Against last year: the observed reading

Today 321 across 58 stations. The year is judged on the 38 matched stations: 328 today against 377, the mean of the same date ±7 days of 2025 at those stations. The interval runs -65.5 to -30.1 points.

The worst station in the city today

Severe, set by PM10. Its PM10 averaged 461.7 µg/m³ over the 24 hours to 4 PM, 10.2 times the WHO 24-hour guideline of 45 µg/m³. 7.2 lakh people live within 4 km of this monitor. Within 500 m of the monitor, 40% of the land is built up and 60% is under vegetation, so this reading describes a mixed neighbourhood.

The year, from its best days to its worst

On the same 313 complete dates, 1 January to 9 November, the best tenth of days reads 77.8 against 72.5 and the worst tenth 302.2 against 321.0. The days at or below 200 went from 211 to 219.

How much of the city was above AQI 200

That is 13.0 of 44.6 reporting stations, against 30.8 per cent over the same dates last year, a change of -1.5 points on an interval of -8.2 to +4.6, so it is unchanged inside its margin.

Who the monitoring network reaches

Within 4 km live 92 per cent of Delhi's people, within 2 km 44 per cent, and within 500 m only 3.5 per cent. The map holds 55 monitors in 53 zones; 58 monitors reported today. 33 of the 53 zones stretch past our chosen 4 km proximity threshold, informed by US EPA neighbourhood-scale guidance.

What each monitor's reading speaks for

That is 91.0 per cent of Delhi, living around the 56 monitors that read Poor or worse. IIT Delhi was worst at 439, and 7.2 lakh people live within 4 km of it. This counts people near the monitors, not measured individual exposure.

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