Highest air pollution Kowloon, today and tomorrow
Today (29 June): Air quality in Kowloon is fair. PM1 is fair; AQI, NO2, and SO2 are medium; PM2.5, PM10, O3, CO, and HCHO are good. Pollution peaks around 12:00 AM (NO2: 46.9/100).
Tomorrow (30 June 2026): Air quality in Kowloon is medium. PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 8:00 PM (NO2: 45.2/100). 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
Kowloon's air quality reflects the Kowloon Peninsula's enclosed harbour canyon position between Lion Rock and Victoria Harbour, with vehicle traffic on the Nathan Road and Cross-Harbour Tunnel approach generating sustained NOₓ in the dense urban corridor. The Kowloon hills create topographic enclosure, while the Kowloon urban fabric's extraordinary density concentrates vehicle and building emissions and transboundary Pearl River Delta industrial pollution on northerly winds consistently elevates background PM2.5 above local emission levels throughout the year.
Today - 29 June | Pollution peaks at 00:00
AQI:
Medium
46.9/100
PM2.5 (fine particles):
Good
19.0/100
PM10 (coarse particles):
Good
5.2/100
NO2 (nitrogen dioxide):
Medium
46.9/100
O3 (ozone):
Good
19.1/100
SO2 (sulfur dioxide):
Medium
43.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.6/100
PM1 (ultrafine particles):
Fair
24.7/100
Levels show the poorest local air quality during the day
Tomorrow - 30 June | Pollution peaks at 20:00
AQI:
Medium
45.2/100
PM2.5 (fine particles):
Good
14.1/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Medium
45.2/100
O3 (ozone):
Good
16.1/100
SO2 (sulfur dioxide):
Medium
40.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.2/100
PM1 (ultrafine particles):
Good
18.8/100
Pollen forecast in Kowloon
View pollen forecastFrequently Asked Questions
Is air quality bad in Kowloon right now?
On 29 June 2026, overall air quality in Kowloon is fair. PM1 is the main pollutant at 24.7/100. Pollution peaks around 12:00 AM (NO2: 46.9/100).
Will air quality be worse tomorrow in Kowloon?
On 30 June 2026, air quality conditions in Kowloon will be better than today, with AQI forecast at medium at 45.2/100. Pollution peaks around 8:00 PM (NO2: 45.2/100).
Are air quality levels in Kowloon 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: 28 June 2026 at 18:36 CET (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
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team