TheAirYouBreathe.com | Hong Kong Air Pollution compared to Western Standards.

WARNING SUMMARY
Causeway Bay (Roadside) No response action is required.
API: 6
2017-03-29 01:00:00

 

Causeway Bay (Roadside) Air quality is considered satisfactory, and air pollution poses little or no risk
1
2017-03-29 01:00:00

Causeway Bay (Roadside) Mild effects, unlikely to require action, may be noticed amongst sensitive individuals.
6
2017-03-29 01:00:00

Causeway Bay (Roadside)
| 149
2017-03-29 01:00:00

 

 

 


COUNTRY-BY-COUNTRY POLLUTION SUB-INDEX

PM10
Moderate / 67.8
Moderate Pollution / 6
Poor air quality / 149
Mediocre / 7
149% of maximum
PM2.5 (est)*
Unhealthy / 153
Not indexed
Not indexed / 149
Not indexed / 7
Ozone
Good / 27.9
Low / 2
Very good air quality / 22.9
Bon / 3
64% of maximum
NO2
Good / 44.2
Low / 2
Good air quality / 39.1
Bon / 4
46% of maximum
SO2
/
Low / 1
No Data / 0.8
Tres Bon / 1
27% of maximum
CO2
No Data / 0.7
No Data / 0
Very good air quality / 8
Not indexed
Not indexed

 

GENERAL AIR QUALITY INDEXES

USA
Good
Moderate
Unhealthy for Sensitive Groups
Unhealthy
Very unhealthy
Hazardous
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
Australia
Very good air quality
Good air quality
Fair air quality
Poor air quality
Very poor air quality
Hazardous
France
1. Tres Bon
2. Bon
3. Bon
4. Bon
5. Moyen
6. Mediocre
7. Mediocre
8. Mauvais
9. Mauvais
10. Tres Mauvais
Hong Kong
Low
Medium
High
Very High
Severe


CURRENT POLLUTANT CONCENTRATIONS
in Causeway Bay (Roadside)

PM10/RSP
The 24 hour average for RSP/PM10 is 75 ug/m3
The average for RSP/PM10 since midnight is 85 ug/m3
The 1 hour average for RSP/PM10 is 86

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 52 ug/m3
The average for RSP/PM2.5 since midnight is 59 ug/m3

OZONE -- 8 HOUR
The 8 hour average for o3 is 64.2750000

OZONE -- 4 HOUR
The 8 hour average for o3 is 35.9625000

OZONE -- 1 HOUR
The 1 hour average for o3 is 74.3 ug/m3

SO2--1 HOUR AVERAGE
The 1 hour average for so2 is 4.3 ug/m3
The 24 hour average for so2 is 5.3 ug/m3

NO2--1 HOUR AVERAGE is 91.2 ug/m3

CO--8 HOUR AVERAGE is 839 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.