What is the air quality trend in Hengyang?

Over the past 9 days, Hengyang had an average AQI of 67 based on station measurements. The worst day was 2026-10-09 with AQI 127.

How is Hengyang air quality measured?

Air quality in Hengyang 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 Hengyang, China

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

Historical PM2.5 and AQI trend from monitoring stations near Hengyang, China.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

58h

PM2.5 Station

58h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-09	127	127–127	46.1 µg/m³	1h	2
2026-10-08	69	50–104	20.5 µg/m³	4h	1
2026-10-07	78	34–122	25.2 µg/m³	10h	1
2026-10-06	68	38–151	20.6 µg/m³	13h	1
2026-10-05	50	19–61	12.7 µg/m³	7h	1
2026-10-04	37	12–63	9.8 µg/m³	5h	1
2026-10-03	56	30–89	16.5 µg/m³	5h	1
2026-10-02	68	46–122	20.2 µg/m³	4h	2
2026-10-01	53	34–76	14.1 µg/m³	9h	1

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