What is the air quality trend in Chas?

Over the past 8 days, Chas had an average AQI of 151 based on station measurements. The worst day was 2026-10-14 with AQI 155.

How is Chas air quality measured?

Air quality in Chas 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 Chas, India

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

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

103

Current AQI
Unhealthy for sensitive groups CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

163h

PM2.5 Station

163h · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	140	139–142	51.2 µg/m³	6h	3
2026-10-20	143	105–154	52.6 µg/m³	24h	3
2026-10-19	154	148–160	61.0 µg/m³	24h	4
2026-10-18	153	131–157	61.1 µg/m³	24h	4
2026-10-17	155	153–156	62.8 µg/m³	23h	4
2026-10-16	154	147–158	61.6 µg/m³	24h	4
2026-10-15	155	154–157	63.7 µg/m³	23h	3
2026-10-14	155	132–158	64.7 µg/m³	15h	2

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