What is the air quality trend in Delhi?

Over the past 7 days, Delhi had an average AQI of 131 based on station measurements. The worst day was 2026-07-16 with AQI 169.

How is Delhi air quality measured?

Air quality in Delhi is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Delhi, India

Name: Delhi Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Delhi, India.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

82h

PM2.5 Station

82h · 22 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	78	42–119	24.9 µg/m³	7h	6
2026-07-20	111	75–160	40.8 µg/m³	11h	5
2026-07-19	137	88–165	53.3 µg/m³	12h	2
2026-07-18	136	103–189	58.6 µg/m³	8h	6
2026-07-17	146	105–180	66.0 µg/m³	14h	5
2026-07-16	169	117–365	92.0 µg/m³	14h	5
2026-07-15	140	95–174	59.9 µg/m³	16h	8

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