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TheAirYouBreathe.com | Hong Kong Air Pollution compared to Western Standards.
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WARNING SUMMARY
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Causeway Bay (Roadside) |
No response action is required. |
| API: 4 |
| 2020-09-23 10:00:00 |
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Causeway Bay (Roadside) |
Air quality is considered satisfactory, and air pollution poses little or no risk |
| 1 |
| 2020-09-23 10:00:00 |
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Causeway Bay (Roadside) |
Effects are unlikely to be noticed even by individuals who know they are sensitive to air pollutants.
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| 3 |
| 2020-09-23 10:00:00 |
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Causeway Bay (Roadside) |
People unusually sensitive to air pollution:
Plan strenuous outdoor activities when air quality is better |
| Fair air quality | 78.8 |
| 2020-09-23 10:00:00 |
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COUNTRY-BY-COUNTRY POLLUTION SUB-INDEX |
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PM10 |
Good / 30.8 |
Low / 3 |
Fair air quality / 78.8 |
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79% of maximum |
PM2.5 (est)* |
Moderate / 71.1 |
Not indexed |
Not indexed / 78.8 |
Not indexed / |
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Ozone |
Good / 18.1 |
Low / 2 |
Very good air quality / 12.1 |
Bon / 2 |
41% of maximum |
NO2 |
Good / 33.8 |
Low / 2 |
Very good air quality / 29.9 |
Bon / 3 |
35% of maximum |
SO2 |
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/ 0 |
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0% of maximum |
CO2 |
No Data / 0.6 |
No Data / 0 |
Very good air quality / 6.3 |
Not indexed |
Not indexed |
GENERAL AIR QUALITY INDEXES |
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USA
| Good |
| Moderate |
| Unhealthy for Sensitive Groups |
| Unhealthy |
| Very unhealthy |
| Hazardous |
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United Kingdom
| 1. Low |
| 2. Low |
| 3. Low |
| 4. Moderate Pollution |
| 5. Moderate Pollution |
| 6. Moderate Pollution |
| 7. High Pollution |
| 8. High Pollution |
| 9. High Pollution |
| 10. Very High Pollution |
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Australia
| Very good air quality |
| Good air quality |
| Fair air quality |
| Poor air quality |
| Very poor air quality |
| Hazardous |
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France
| 1. Tres Bon |
| 2. Bon |
| 3. Bon |
| 4. Bon |
| 5. Moyen |
| 6. Mediocre |
| 7. Mediocre |
| 8. Mauvais |
| 9. Mauvais |
| 10. Tres Mauvais |
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Hong Kong
| Low |
| Medium |
| High |
| Very High |
| Severe |
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CURRENT POLLUTANT CONCENTRATIONS
in Causeway Bay (Roadside)
PM10/RSP
The 24 hour average for RSP/PM10 is 39 ug/m3
The average for RSP/PM10 since midnight is 31 ug/m3
The 1 hour average for RSP/PM10 is 44
PM2.5--ESTIMATED (the Hong Kong government refuses to release PM2.5 data, so we estimate based on previous ratios of PM10 : PM2.5. When the Hong Kong government starts to release the REAL data, we'll start using it)
The 24 hour average for RSP/PM2.5 is 28 ug/m3
The average for RSP/PM2.5 since midnight is 22 ug/m3
OZONE -- 8 HOUR
The 8 hour average for o3 is 41.4375000
OZONE -- 4 HOUR
The 8 hour average for o3 is 19.0125000
OZONE -- 1 HOUR
The 1 hour average for o3 is 46.3 ug/m3
SO2--1 HOUR AVERAGE
The 1 hour average for so2 is 0 ug/m3
The 24 hour average for so2 is 0 ug/m3
NO2--1 HOUR AVERAGE is 69.7 ug/m3
CO--8 HOUR AVERAGE is 660.1 ug/m3
GENERAL NOTES
* The highest warning level for any one pollutant determines the overall warning level for a country, so if PM10 is ranked very high and CO2 is ranked very low, the overall warning is HIGH due to PM10's ranking.
* Different countries rate different pollutants as a different threat. For example the USA listings on PM10 pollution allow for a considerably higher amount than the Australia or World Health Organization.
* The W.H.O. standards are very strict and Hong Kong is basically in violation the majority of the time.
* Some of the measurements are based on 24 hour standards and are designed more for tracking historical trends than alerting the public to present or future problems. For example PM10 will increase during the day to levels, if they were maintained 24 hours straight, would be quite high, but as that measurement utilizes a 24 hour average the pollution indexes are adjusted accordingly.
