What is the air quality trend in Hong’an?

Over the past 15 days, Hong’an had an average AQI of 59 based on station measurements. The worst day was 2026-05-22 with AQI 70.

How is Hong’an air quality measured?

Air quality in Hong’an 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 Hong’an, China

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

Historical PM2.5 and AQI trend from monitoring stations near Hong’an, China.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

306h

PM2.5 Station

306h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	54	49–58	13.5 µg/m³	2h	2
2026-05-29	59	26–87	16.4 µg/m³	23h	3
2026-05-28	62	35–89	17.9 µg/m³	24h	3
2026-05-27	63	47–85	17.9 µg/m³	19h	3
2026-05-26	63	35–110	18.3 µg/m³	22h	3
2026-05-25	63	16–172	19.9 µg/m³	23h	3
2026-05-24	63	22–373	26.9 µg/m³	23h	3
2026-05-23	62	32–151	17.5 µg/m³	24h	3
2026-05-22	70	17–288	27.7 µg/m³	24h	3
2026-05-21	53	29–85	14.2 µg/m³	22h	3
2026-05-20	65	30–117	19.3 µg/m³	20h	2
2026-05-19	53	18–97	14.3 µg/m³	21h	3
2026-05-18	51	15–75	13.6 µg/m³	22h	3
2026-05-17	49	28–72	12.8 µg/m³	20h	3
2026-05-16	60	27–129	17.5 µg/m³	17h	3

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