What is the air quality trend in Longtan?

Over the past 15 days, Longtan had an average AQI of 57 based on station measurements. The worst day was 2026-07-22 with AQI 72.

How is Longtan air quality measured?

Air quality in Longtan 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 Longtan, China

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

335h

PM2.5 Station

335h · 11 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	72	71–73	22.1 µg/m³	2h	12
2026-07-21	63	42–97	18.0 µg/m³	24h	8
2026-07-20	62	31–72	17.4 µg/m³	24h	10
2026-07-19	60	45–116	16.5 µg/m³	24h	11
2026-07-18	64	32–124	18.6 µg/m³	24h	9
2026-07-17	56	39–68	15.0 µg/m³	24h	11
2026-07-16	53	34–111	14.1 µg/m³	24h	11
2026-07-15	51	31–73	13.2 µg/m³	24h	9
2026-07-14	55	37–65	14.4 µg/m³	24h	8
2026-07-13	60	38–177	18.3 µg/m³	24h	10
2026-07-12	53	35–65	13.8 µg/m³	24h	8
2026-07-11	54	41–70	14.0 µg/m³	24h	10
2026-07-10	54	44–70	13.9 µg/m³	24h	11
2026-07-09	53	31–62	13.4 µg/m³	24h	11
2026-07-08	57	36–173	16.9 µg/m³	21h	14

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