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Remarks:
(1) Time shown is in Hong Kong time.
(2) Concentration shown is in microgram per cubic metre (µg/m3).
(3) Abbreviation:
NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates
(4) For more information on the Air Quality Health Index and Added Health Risk, please visit <What's AQHI>.
(5) The AQHI information is based on real time data taken directly from EPD's Air Quality Monitoring Network.
(6) In case of equipment or station suspension due to repair and maintenance, the data collection for calculation of AQHI at station will be affected, the data of similar stations will then be adopted. Such AQHI will be shown with an asterisk.
| FORECAST of Health Risk | ||
| 25-04-2024 | Tomorrow A.M. | Tomorrow P.M. |
| General Stations | Low to Moderate | Low to Moderate |
| Roadside Stations | Low to Moderate | Low to Moderate |
| Health Risk | Low | Moderate | High | Very High | Serious | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| AQHI Scale | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 10+ |
| Air Quality Health Index | |||
| 16:00 25-04-2024 | AQHI | Health Risk | |
| General Stations | Central/Western | 3 | Low |
| Southern | 3 | Low | |
| Eastern | 3 | Low | |
| Kwun Tong | 3 | Low | |
| Sham Shui Po | 3 | Low | |
| Kwai Chung | 3 | Low | |
| Tsuen Wan | 3 | Low | |
| Tseung Kwan O | 3 | Low | |
| Yuen Long | 3 | Low | |
| Tuen Mun | 3 | Low | |
| Tung Chung | 3 | Low | |
| Tai Po | 3 | Low | |
| Sha Tin | 3 | Low | |
| North | 3* | Low | |
| Tap Mun | 3 | Low | |
| Roadside Stations | Causeway Bay | 4 | Moderate |
| Central | 3 | Low | |
| Mong Kok | 3 | Low | |