What is the air quality trend in Chas?

Over the past 20 days, Chas had an average AQI of 93 based on station measurements. The worst day was 2026-07-20 with AQI 128.

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.

152

Current AQI
Unhealthy CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

473h

PM2.5 Station

473h · 3 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-07	93	81–101	32.1 µg/m³	24h	3
2026-08-06	77	70–87	24.7 µg/m³	24h	3
2026-08-05	90	78–103	30.6 µg/m³	24h	3
2026-08-04	107	97–120	38.1 µg/m³	24h	3
2026-08-03	111	104–120	39.6 µg/m³	22h	3
2026-08-02	92	83–105	31.4 µg/m³	24h	2
2026-08-01	82	79–87	26.9 µg/m³	24h	3
2026-07-31	80	74–86	26.0 µg/m³	24h	2
2026-07-30	79	74–81	25.2 µg/m³	24h	3
2026-07-29	82	77–87	27.1 µg/m³	23h	2
2026-07-28	88	83–93	29.4 µg/m³	24h	2
2026-07-27	96	91–97	33.3 µg/m³	24h	2
2026-07-26	103	94–118	36.3 µg/m³	24h	2
2026-07-25	115	105–120	41.1 µg/m³	23h	2
2026-07-24	89	77–103	30.0 µg/m³	24h	2
2026-07-23	75	74–77	23.7 µg/m³	24h	2
2026-07-22	74	70–80	23.1 µg/m³	24h	3
2026-07-21	96	82–123	33.2 µg/m³	24h	3
2026-07-20	128	120–134	46.4 µg/m³	24h	2
2026-07-19	109	99–120	39.0 µg/m³	21h	3

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