What is the air quality trend in Hangzhou?

Over the past 15 days, Hangzhou had an average AQI of 52 based on station measurements. The worst day was 2026-09-04 with AQI 68.

How is Hangzhou air quality measured?

Air quality in Hangzhou 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 Hangzhou, China

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

331h

PM2.5 Station

331h · 11 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	62	45–76	17.7 µg/m³	11h	10
2026-09-04	68	38–102	20.3 µg/m³	23h	10
2026-09-03	57	32–111	15.9 µg/m³	24h	8
2026-09-02	49	25–78	13.0 µg/m³	24h	7
2026-09-01	43	30–64	10.8 µg/m³	24h	9
2026-08-31	49	19–81	12.6 µg/m³	24h	8
2026-08-30	53	29–117	14.2 µg/m³	24h	7
2026-08-29	56	25–96	15.4 µg/m³	24h	8
2026-08-28	46	28–73	11.6 µg/m³	24h	9
2026-08-27	53	28–80	13.9 µg/m³	23h	8
2026-08-26	55	34–79	14.8 µg/m³	24h	8
2026-08-25	49	30–65	12.5 µg/m³	24h	9
2026-08-24	45	27–75	11.2 µg/m³	24h	10
2026-08-23	51	26–77	13.8 µg/m³	24h	8
2026-08-22	49	28–98	13.4 µg/m³	10h	7

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