Worst air pollution Heyuan, today and tomorrow
Today (16 July): Air quality in Heyuan is fair. O3 and SO2 are fair; AQI and NO2 are medium; PM2.5, PM10, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 43.4/100).
Tomorrow (17 July 2026): Air quality in Heyuan is fair. SO2 decreases to medium; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 1:00 AM (NO2: 44.4/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Heyuan's air quality reflects the Guangdong northern Dongjiang River valley's partial enclosure between the Jiulian Mountains, with vehicle traffic on surrounding expressways and the electronics, new energy, and manufacturing corridor contributing local sources. The surrounding mountain ranges create topographic variation, while the Xinfengjiang reservoir provides some local humidity and ventilation and Heyuan generally maintains moderate Guangdong northern mountain corridor readings throughout most of the year.
Today - 16 July | Pollution peaks at 23:00
AQI:
Medium
43.4/100
PM2.5 (fine particles):
Good
12.5/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Medium
43.4/100
O3 (ozone):
Fair
36.0/100
SO2 (sulfur dioxide):
Fair
33.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.6/100
PM1 (ultrafine particles):
Good
15.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 01:00
AQI:
Medium
44.4/100
PM2.5 (fine particles):
Good
15.0/100
PM10 (coarse particles):
Good
4.6/100
NO2 (nitrogen dioxide):
Medium
44.4/100
O3 (ozone):
Fair
37.3/100
SO2 (sulfur dioxide):
Medium
40.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.0/100
PM1 (ultrafine particles):
Fair
20.5/100
Frequently Asked Questions
Is air quality bad in Heyuan right now?
On 16 July 2026, overall air quality in Heyuan is fair. O3 is the main pollutant at 36.0/100. Pollution peaks around 11:00 PM (NO2: 43.4/100).
Will air quality be worse tomorrow in Heyuan?
On 17 July 2026, air quality conditions in Heyuan will be similar to today, with O3 forecast at fair at 37.3/100. Pollution peaks around 1:00 AM (NO2: 44.4/100).
When is air pollution at its worst in Heyuan?
Air quality in Heyuan tends to be worse when traffic emissions and textile and manufacturing operations build up and weather conditions turn unfavourable. Local weather patterns add further variation on top of these sources. Conditions can otherwise vary considerably with the weather.
Are air quality levels in Heyuan based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app