Worst air pollution Yucheng, today and tomorrow
Today (16 July): Air quality in Yucheng is poor. AQI and O3 are poor; PM1 is fair; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 5:00 PM (O3: 69.0/100).
Tomorrow (17 July 2026): Air quality in Yucheng is fair. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 59.3/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Yucheng in Sichuan reflects the Sichuan Basin's Pengshan River valley position south of Chengdu adjacent to Leshan, with vehicle traffic on surrounding expressways and the agricultural and light manufacturing corridor contributing local sources. The Sichuan Basin's topographic enclosure creates concentration under winter inversions, while the broader Chengdu-Leshan metropolitan industrial background influences the corridor and the area generally maintains moderate Sichuan Basin provincial readings throughout most of the year.
Today - 16 July | Pollution peaks at 17:00
AQI:
Poor
69.0/100
PM2.5 (fine particles):
Good
18.8/100
PM10 (coarse particles):
Good
5.0/100
NO2 (nitrogen dioxide):
Good
14.6/100
O3 (ozone):
Poor
69.0/100
SO2 (sulfur dioxide):
Good
2.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.7/100
PM1 (ultrafine particles):
Fair
24.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Medium
59.3/100
PM2.5 (fine particles):
Good
16.1/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Good
15.9/100
O3 (ozone):
Medium
59.3/100
SO2 (sulfur dioxide):
Good
3.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.7/100
PM1 (ultrafine particles):
Fair
21.9/100
Frequently Asked Questions
Is air quality bad in Yucheng right now?
On 16 July 2026, overall air quality in Yucheng is poor. AQI is the main air quality indicator at 69.0/100. Pollution peaks around 5:00 PM (O3: 69.0/100).
Will air quality be worse tomorrow in Yucheng?
On 17 July 2026, air quality conditions in Yucheng will be better than today, with PM1 forecast at fair at 21.9/100. Pollution peaks around 1:00 PM (O3: 59.3/100).
When is air pollution at its worst in Yucheng?
Yucheng usually sees its poorest air quality when traffic emissions, manufacturing activity, as well as agricultural activity coincide with periods when calm, stagnant conditions settle in the surrounding valley. Topographic enclosure in the valley lets pollution accumulate rather than clear out. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher.
Are air quality levels in Yucheng 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