हवा का हिसाब Hawa Ka Hisab
प्रकाशक श्री अजय माकन, Member of Parliament, Rajya Sabha. सीपीसीबी के सरकारी आँकड़ों का स्वतंत्र विश्लेषण। आँकड़ों का संकलन CREA द्वारा। जागरूकता के उसके प्रयासों के लिए हमारा आभार। इस साइट में CREA की कोई भागीदारी नहीं है। संपर्क: [email protected]

रिपोर्ट · 03 October 2026

243 AQI at Dwarka-Sector 8, 24 hours to 4 PM, 03 October 2026, the worst monitor in Delhi today, Poor on CPCB's documented formula, and PM10 set that figure. 8.0 lakh people live within 4 km of it.

170.5
TODAY
Delhi's AQI calculated with CPCB's documented formula, the mean of 44 stations.
1.82 crore
NEAR MODERATE OR WORSE
Within 4 km of 44 Moderate-or-worse monitors: 87.2 per cent of Delhi, every pollutant counted.
4.0x
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

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दिन का सार

Today, 03 October 2026, 24 hours to 4 PM: Delhi's air today is 55.9 points worse than on this date last year, which is 47.7 per cent higher, on the Central Pollution Control Board's own readings. Delhi's AQI was 170.5, Moderate, calculated with CPCB's documented formula as the mean of 44 stations' AQIs (CPCB's note "How is AQI calculated?" and its AQI Calculator; page 32 sets out the formula). As measured, 43 of the 43 monitors reading PM2.5 were above the WHO 24-hour guideline of 15 µg/m³. Above AQI 200 today: 4 stations, Dwarka-Sector 8 243, IIT Delhi 236, IHBAS 224, Jahangirpuri 222. Poor or worse air reached 47.6 lakh people within 4 km of their monitor today, 22.7 per cent of Delhi.

The year so far, 1 January to 3 October: the cleaner days of 2026 have been the dirtiest for these dates since 2019, because three days in four read above 106.1 on the particle AQI, against 89.8 on the same dates of 2025. The middle day reads 149.4 against 134.7 on the same dates last year. On an average day, 27.3 per cent of Delhi's reporting monitors, about 11 of 43, sat above 200 on the particle AQI.

निष्कर्ष

रिपोर्ट क्या कहती है

यह रिपोर्ट अंग्रेज़ी में है।

Against yesterday: the one-day move
From 174 to 171. On the 43 stations that reported on both days, the 95 per cent interval runs -7.9 to 1.9 points, so the honest reading is level, not better.
Against last year: the observed reading
Today 170 across 44 stations. The year is judged on the 37 matched stations: 173 today against 117, the mean of the same date ±7 days of 2025 at those stations. The interval runs 48.6 to 64.1 points.
The worst station in the city today
Poor, set by PM10. Its PM10 averaged 293.1 µg/m³ over the 24 hours to 4 PM, 6.5 times the WHO 24-hour guideline of 45 µg/m³. Last year this station read 136 on the mean of the same date ±7 days, so the change is +106.5 points. 8.0 lakh people live within 4 km of this monitor. Within 500 m of the monitor, 65% of the land is built up and 34% is under vegetation, so this reading describes a densely built neighbourhood.
The year, from its best days to its worst
On the same 276 complete dates, 1 January to 3 October, the best tenth of days reads 74.3 against 72.0 and the worst tenth 291.3 against 291.8. The days at or below 200 went from 200 to 198.
How much of the city was above AQI 200
That is 11.4 of 43.2 reporting stations, against 25.8 per cent over the same dates last year, a change of +1.5 points on an interval of -3.6 to +6.7, 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 45 per cent, and within 500 m only 3.6 per cent. Delhi has 55 monitors in 53 zones, of which 44 reported today, and 30 of the 53 zones stretch past 4 km, the distance that the US EPA's neighbourhood scale treats as the furthest a monitor speaks for.
What each monitor's reading speaks for
That is 22.7 per cent of Delhi, living around the 4 monitors that read Poor or worse. Dwarka-Sector 8 was worst at 243, and 8.0 lakh people live within 4 km of it. On the wider count, 1.82 crore people, 87.2 per cent of Delhi, live within 4 km of a monitor at Moderate or worse.
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