What is the air quality trend in Haimen?

Over the past 14 days, Haimen had an average AQI of 80 based on station measurements. The worst day was 2026-10-13 with AQI 99.

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

332h

PM2.5 Station

332h · 17 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-20	66	51–80	19.2 µg/m³	24h	13
2026-10-19	66	46–97	19.1 µg/m³	24h	10
2026-10-18	58	45–71	15.6 µg/m³	24h	14
2026-10-17	61	44–81	17.1 µg/m³	24h	12
2026-10-16	79	70–96	25.7 µg/m³	23h	11
2026-10-15	86	61–120	28.5 µg/m³	24h	10
2026-10-14	91	74–124	31.0 µg/m³	24h	8
2026-10-13	99	60–128	34.2 µg/m³	24h	8
2026-10-12	94	65–120	32.3 µg/m³	24h	9
2026-10-11	85	58–121	28.3 µg/m³	24h	8
2026-10-10	87	67–139	28.7 µg/m³	24h	10
2026-10-09	85	63–125	28.0 µg/m³	24h	11
2026-10-08	86	70–110	28.6 µg/m³	24h	18
2026-10-07	77	62–114	24.3 µg/m³	21h	19

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