What is the air quality trend in Delhi?

Over the past 12 days, Delhi had an average AQI of 109 based on station measurements. The worst day was 2026-08-26 with AQI 156.

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

276h

PM2.5 Station

276h · 19 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	64	45–90	18.1 µg/m³	18h	19
2026-09-04	72	44–151	22.0 µg/m³	24h	19
2026-09-03	77	64–110	24.5 µg/m³	24h	19
2026-09-02	78	56–125	24.6 µg/m³	24h	19
2026-09-01	96	70–150	32.8 µg/m³	24h	19
2026-08-31	105	70–151	37.0 µg/m³	24h	19
2026-08-30	115	73–155	41.5 µg/m³	24h	19
2026-08-29	146	110–185	59.6 µg/m³	24h	19
2026-08-28	140	105–179	57.1 µg/m³	24h	20
2026-08-27	144	109–178	59.0 µg/m³	24h	19
2026-08-26	156	120–173	69.5 µg/m³	24h	20
2026-08-25	125	72–188	49.7 µg/m³	18h	19

Back to Delhi Air Quality