What is the air quality trend in Chennai?

Over the past 8 days, Chennai had an average AQI of 81 based on station measurements. The worst day was 2026-06-01 with AQI 112.

How is Chennai air quality measured?

Air quality in Chennai 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 Chennai, India

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

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

119

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

161h

PM2.5 Station

161h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-08	85	21–207	32.3 µg/m³	20h	3
2026-06-07	70	25–158	22.1 µg/m³	21h	3
2026-06-06	72	4–152	23.0 µg/m³	24h	3
2026-06-05	77	32–164	25.4 µg/m³	24h	3
2026-06-04	83	34–153	27.4 µg/m³	24h	4
2026-06-03	84	23–168	28.9 µg/m³	24h	3
2026-06-02	70	4–168	23.7 µg/m³	23h	3
2026-06-01	112	112–112	40.0 µg/m³	1h	1

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