🌿 IsTheAirSafe .com

Hong Kong Good

Hong Kong, Hong Kong

Updated: Nov 5, 2026, 3:00 AM

270500
Good

Air quality is satisfactory, and air pollution poses little or no risk.

Current Weather

24.8°C
Temperature
89%
Humidity
3.9
mph wind
Mainly clear
Conditions

Pollutant Breakdown

61
PM2.5
µg/m³ · Fine particles
33
PM10
µg/m³ · Coarse particles
27.3
Ozone
ppb · Ground-level ozone
15.1
NO₂
ppb · Nitrogen dioxide
1.8
SO₂
ppb · Sulfur dioxide
3.4
CO
ppm · Carbon monoxide

Dominant pollutant: O3

PM2.5 Forecast (next 7 days)

Tue
11/3
89
avg
Wed
11/4
84
avg
Thu
11/5
78
avg
Fri
11/6
112
avg
Sat
11/7
80
avg
Sun
11/8
68
avg
Mon
11/9
80
avg

Health Guidance

✅
General population: No restrictions. Enjoy outdoor activities.
✅
Sensitive groups: Air quality is good. Normal activities are fine.
💨
Keep windows closed if AQI is Unhealthy or above. Use HEPA air purifiers indoors.

Data from: Hong Kong Environmental Protection Department - 空氣質素健康指數單張及海報, World Air Quality Index Project

Is the air safe in Hong Kong today?

The current Air Quality Index (AQI) in Hong Kong is 27, which is classified as "Good". Air quality is satisfactory, and air pollution poses little or no risk.

The AQI scale runs from 0 to 500. Values of 0–50 are Good, 51–100 are Moderate, 101–150 are Unhealthy for Sensitive Groups, 151–200 are Unhealthy, 201–300 are Very Unhealthy, and 301–500 are Hazardous.

Air quality in Hong Kong, Hong Kong is monitored by local environmental agencies and reported through the World Air Quality Index project. Data is updated hourly and includes PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide.

AQI Scale Reference

0–50
Good
51–100
Moderate
101–150
Unhealthy for Sensitive Groups
151–200
Unhealthy
201–300
Very Unhealthy
301+
Hazardous