What is the air quality trend in Heyan?

Over the past 8 days, the CAMS atmospheric model estimates an average AQI of 45 for Heyan. No ground-level monitoring stations are currently reporting for this area.

How is Heyan air quality measured?

Heyan currently has no nearby ground-level monitoring stations. CERNS.IO uses the CAMS (Copernicus Atmosphere Monitoring Service) atmospheric model to provide PM2.5 and AQI estimates, and the GFS (Global Forecast System) model for temperature and precipitation data.

Air Quality History for Heyan, China

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

Temperature, precipitation and air quality trend for Heyan, China.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

No ground-level monitoring stations are available near Heyan. Showing air quality data from the CAMS atmospheric model and weather from GFS. Model data may differ from actual ground conditions.

Air Quality Index CAMS model

168pt

PM2.5 CAMS model

168pt

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Model

Date	AQI	PM2.5 avg	Temp High	Temp Low	Precip
2026-05-30	83	27.1 µg/m³	15.5°C	15.5°C	0.0 mm
2026-05-29	66	19.2 µg/m³	25.5°C	18.8°C	1.0 mm
2026-05-28	81	26.4 µg/m³	27.4°C	15.2°C	2.1 mm
2026-05-27	25	6.1 µg/m³	22.2°C	19.7°C	11.2 mm
2026-05-26	26	6.1 µg/m³	26.0°C	16.1°C	1.0 mm
2026-05-25	30	7.2 µg/m³	20.9°C	14.6°C	3.9 mm
2026-05-24	25	6.1 µg/m³	21.2°C	14.8°C	21.9 mm
2026-05-23	26	6.3 µg/m³	27.0°C	16.0°C	5.5 mm

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