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Share: HongKong Air Quality Forecast now available.
Most Recent News:
July 1st: New post about 'Translation for Polish is now available'. Read more.
June 20th: We apologize for the service break which happened during June 19th ~ 20th. The problem is now fixed, and service back to normal. We have received tons of support emails (thanks!), but might not be able to reply to all of them individually.
May 18th: New post about 'Ground Ozone Air Quality Index update with Instant Cast'. Read more.
March 15th: New post about 'A Beginner's Guide to Air Quality Instant-Cast and Now-Cast. '. Read more.
February 23rd: New post about 'South Asia Real-time Air Quality Monitoring Project'. Read more.
view all the past news, or check the frequently asked questions.
|AQI||Air Pollution Level||Health Implications|
|0 - 50||Good||Air quality is considered satisfactory, and air pollution poses little or no risk|
|51 -100||Moderate||Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.|
|101-150||Unhealthy for Sensitive Groups||Members of sensitive groups may experience health effects. The general public is not likely to be affected.|
|151-200||Unhealthy||Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects|
|201-300||Very Unhealthy||Health warnings of emergency conditions. The entire population is more likely to be affected.|
|300+||Hazardous||Health alert: everyone may experience more serious health effects|