Worst air pollution Changshu, today and tomorrow
Today (16 July): Air quality in Changshu is poor. AQI and O3 are poor; PM2.5, NO2, and PM1 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (O3: 78.0/100).
Tomorrow (17 July 2026): Air quality in Changshu is poor. PM2.5 increases to fair; all other pollutants stay as today. Pollution peaks around 2:00 PM (O3: 79.4/100). 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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Changshu's air quality reflects the flat Jiangsu Yangcheng Lake delta adjacent to Suzhou, with vehicle traffic on surrounding expressways and the garment, chemical, and automotive parts corridor contributing local sources. East China Sea breezes provide limited maritime ventilation, while winter anticyclonic inversions concentrate industrial and heating emissions and Changshu generally maintains moderate to elevated Yangtze Delta Jiangsu industrial corridor readings throughout most of the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Poor
78.0/100
PM2.5 (fine particles):
Medium
40.6/100
PM10 (coarse particles):
Good
12.1/100
NO2 (nitrogen dioxide):
Medium
50.1/100
O3 (ozone):
Poor
78.0/100
SO2 (sulfur dioxide):
Good
17.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.7/100
PM1 (ultrafine particles):
Medium
43.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 14:00
AQI:
Poor
79.4/100
PM2.5 (fine particles):
Fair
37.7/100
PM10 (coarse particles):
Good
10.7/100
NO2 (nitrogen dioxide):
Medium
49.5/100
O3 (ozone):
Poor
79.4/100
SO2 (sulfur dioxide):
Good
8.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
16.2/100
PM1 (ultrafine particles):
Medium
41.9/100
Frequently Asked Questions
Is air quality bad in Changshu right now?
On 16 July 2026, overall air quality in Changshu is poor. AQI is the main air quality indicator at 78.0/100. Pollution peaks around 2:00 PM (O3: 78.0/100).
Will air quality be worse tomorrow in Changshu?
On 17 July 2026, air quality conditions in Changshu will be similar to today, with AQI forecast at poor at 79.4/100. Pollution peaks around 2:00 PM (O3: 79.4/100).
When is air pollution at its worst in Changshu?
Changshu usually sees its poorest air quality when road traffic together with heavy industry such as steel, cement, or petrochemical processing coincide with periods when dry, windy weather picks up. Dust carried on these winds adds substantially to particulate levels. Onshore breezes usually help clear the air, but pollution can build up when winds are light.
Are air quality levels in Changshu 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