What is the air quality trend in Heyuan?

Over the past 7 days, Heyuan had an average AQI of 72 based on station measurements. The worst day was 2026-10-14 with AQI 91.

How is Heyuan air quality measured?

Air quality in Heyuan 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 Heyuan, China

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

163h

PM2.5 Station

163h · 6 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-20	66	40–89	19.3 µg/m³	22h	6
2026-10-19	66	47–88	19.3 µg/m³	24h	6
2026-10-18	54	38–68	13.8 µg/m³	24h	7
2026-10-17	59	39–78	16.0 µg/m³	24h	6
2026-10-16	86	60–137	28.3 µg/m³	23h	5
2026-10-15	87	68–123	28.8 µg/m³	24h	5
2026-10-14	91	64–151	30.9 µg/m³	22h	4

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