Worst air pollution Hangzhou, today and tomorrow
Today (16 July): Air quality in Hangzhou is very poor. AQI and NO2 are very poor; O3 is poor; HCHO is fair; PM2.5 and PM1 are medium; PM10, SO2, and CO are good. Pollution peaks around 9:00 PM (NO2: 90.6/100).
Tomorrow (17 July 2026): Air quality in Hangzhou is very poor. PM10 increases to fair; O3 increases to very poor; all other pollutants stay as today. Pollution peaks around 9:00 PM (NO2: 89.0/100). 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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Hangzhou's air quality reflects the Qiantang River delta's flat coastal plain in Zhejiang, with vehicle traffic on surrounding expressways and the e-commerce, technology, and manufacturing corridor contributing local sources. East China Sea breezes provide maritime ventilation, while winter anticyclonic inversions concentrate vehicle and industrial emissions and Hangzhou generally maintains moderate Yangtze Delta provincial capital readings, with summer conditions considerably better than winter throughout the year.
Today - 16 July | Pollution peaks at 21:00
AQI:
Very poor
90.6/100
PM2.5 (fine particles):
Medium
46.4/100
PM10 (coarse particles):
Good
19.6/100
NO2 (nitrogen dioxide):
Very poor
90.6/100
O3 (ozone):
Poor
68.1/100
SO2 (sulfur dioxide):
Good
12.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
24.4/100
PM1 (ultrafine particles):
Medium
51.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 21:00
AQI:
Very poor
89.0/100
PM2.5 (fine particles):
Medium
47.3/100
PM10 (coarse particles):
Fair
20.5/100
NO2 (nitrogen dioxide):
Very poor
89.0/100
O3 (ozone):
Very poor
83.2/100
SO2 (sulfur dioxide):
Good
14.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
23.8/100
PM1 (ultrafine particles):
Medium
53.2/100
Frequently Asked Questions
Is air quality bad in Hangzhou right now?
On 16 July 2026, overall air quality in Hangzhou is very poor. AQI is the main air quality indicator at 90.6/100. Pollution peaks around 9:00 PM (NO2: 90.6/100).
Will air quality be worse tomorrow in Hangzhou?
On 17 July 2026, air quality conditions in Hangzhou will be similar to today, with AQI forecast at very poor at 89.0/100. Pollution peaks around 9:00 PM (NO2: 89.0/100).
When is air pollution at its worst in Hangzhou?
Pollution in Hangzhou typically rises when traffic on the surrounding roads and manufacturing and food processing combine, especially once dry spells bring strong winds. Dust carried on these winds adds substantially to particulate levels. Maritime airflow normally ventilates the area well, though calmer spells let levels rise.
Are air quality levels in Hangzhou 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