Worst air pollution Kowloon, today and tomorrow
Today (10 August): Air quality in Kowloon is very poor. AQI and O3 are very poor; NO2 is poor; PM2.5 and SO2 are fair; PM1 is medium; PM10, CO, and HCHO are good. Pollution peaks around 1:00 PM (O3: 100/100).
Tomorrow (11 August 2026): Air quality in Kowloon is very poor. NO2 decreases to medium; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 100/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
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 - 10 August | Pollution peaks at 13:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Fair
34.8/100
PM10 (coarse particles):
Good
10.0/100
NO2 (nitrogen dioxide):
Poor
65.8/100
O3 (ozone):
Very poor
100/100
SO2 (sulfur dioxide):
Fair
27.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
16.2/100
PM1 (ultrafine particles):
Medium
40.8/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 15:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Fair
29.0/100
PM10 (coarse particles):
Good
8.2/100
NO2 (nitrogen dioxide):
Medium
50.6/100
O3 (ozone):
Very poor
100/100
SO2 (sulfur dioxide):
Fair
38.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
16.4/100
PM1 (ultrafine particles):
Fair
36.4/100
Frequently Asked Questions
Is air quality bad in Kowloon right now?
On 10 August 2026, overall air quality in Kowloon is very poor. AQI is the main air quality indicator at 100/100. Pollution peaks around 1:00 PM (O3: 100/100).
Will air quality be worse tomorrow in Kowloon?
On 11 August 2026, air quality conditions in Kowloon will be similar to today, with AQI forecast at very poor at 100/100. Pollution peaks around 3:00 PM (O3: 100/100).
When is air pollution at its worst in Kowloon?
The biggest local contributors to pollution in Kowloon are traffic emissions as well as shipbuilding and port operations, particularly once dry spells bring strong winds. These wind events can carry dust in from the surrounding arid landscape. These episodes tend to cluster in spring and autumn.
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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
Check air quality in other popular cities:
Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Get the full experience in the Airmine app.