What is the air quality trend in Haikou?

Over the past 15 days, Haikou had an average AQI of 63 based on station measurements. The worst day was 2026-05-31 with AQI 76.

How is Haikou air quality measured?

Air quality in Haikou 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 Haikou, China

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

334h

PM2.5 Station

334h · 5 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	54	31–69	14.3 µg/m³	7h	8
2026-06-08	48	28–70	11.8 µg/m³	24h	9
2026-06-07	55	36–86	14.7 µg/m³	24h	9
2026-06-06	59	40–70	16.2 µg/m³	24h	8
2026-06-05	62	46–81	17.3 µg/m³	24h	8
2026-06-04	65	43–94	18.8 µg/m³	24h	8
2026-06-03	69	36–93	20.9 µg/m³	24h	8
2026-06-02	76	50–131	24.1 µg/m³	24h	7
2026-06-01	76	63–99	23.9 µg/m³	23h	8
2026-05-31	76	57–103	24.0 µg/m³	24h	9
2026-05-30	70	49–82	21.0 µg/m³	24h	9
2026-05-29	66	50–93	19.1 µg/m³	24h	7
2026-05-28	62	47–69	17.3 µg/m³	24h	9
2026-05-27	61	51–70	16.8 µg/m³	24h	9
2026-05-26	59	45–79	16.3 µg/m³	16h	8

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