What is the air quality trend in Nanjing?

Over the past 15 days, Nanjing had an average AQI of 59 based on station measurements. The worst day was 2026-05-23 with AQI 70.

How is Nanjing air quality measured?

Air quality in Nanjing 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 Nanjing, China

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

331h

PM2.5 Station

331h · 6 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	66	52–87	19.4 µg/m³	15h	8
2026-05-28	63	51–75	17.8 µg/m³	24h	9
2026-05-27	64	38–97	18.4 µg/m³	24h	8
2026-05-26	59	44–86	15.9 µg/m³	24h	8
2026-05-25	57	38–89	15.3 µg/m³	24h	9
2026-05-24	61	27–162	17.8 µg/m³	24h	9
2026-05-23	70	51–117	21.2 µg/m³	24h	8
2026-05-22	64	43–101	18.5 µg/m³	24h	8
2026-05-21	60	39–82	16.6 µg/m³	24h	8
2026-05-20	55	22–88	15.0 µg/m³	24h	8
2026-05-19	63	52–81	17.7 µg/m³	24h	7
2026-05-18	52	39–67	13.3 µg/m³	24h	8
2026-05-17	57	45–75	15.2 µg/m³	23h	8
2026-05-16	56	40–74	14.8 µg/m³	21h	10
2026-05-15	52	33–69	13.9 µg/m³	8h	10

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