What is the air quality trend in Haimen?

Over the past 8 days, Haimen had an average AQI of 57 based on station measurements. The worst day was 2026-08-08 with AQI 70.

How is Haimen air quality measured?

Air quality in Haimen 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 Haimen, China

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

161h

PM2.5 Station

161h · 18 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	70	70–70	21.2 µg/m³	1h	18
2026-08-07	69	48–88	20.8 µg/m³	21h	13
2026-08-06	64	43–124	18.5 µg/m³	24h	10
2026-08-05	61	38–80	17.2 µg/m³	24h	12
2026-08-04	55	39–75	14.7 µg/m³	24h	12
2026-08-03	54	34–82	14.4 µg/m³	23h	11
2026-08-02	43	25–68	10.9 µg/m³	24h	11
2026-08-01	42	13–71	10.5 µg/m³	20h	11

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