What is the air quality trend in Tongzhou?

Over the past 2 days, Tongzhou had an average AQI of 69 based on station measurements. The worst day was 2026-07-02 with AQI 90.

How is Tongzhou air quality measured?

Air quality in Tongzhou 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 Tongzhou, China

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

PM2.5 Station

4h · 3 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-06	49	49–49	11.7 µg/m³	1h	3
2026-07-02	90	71–124	30.1 µg/m³	3h	2

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