Worst air pollution Haikou, today and tomorrow
Today (16 July): Air quality in Haikou is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 33.1/100).
Tomorrow (17 July 2026): Air quality in Haikou is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 45.1/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Haikou's air quality benefits from its exceptional Hainan Island tropical coastal position on the Qiongzhou Strait, with consistent South China Sea trade winds providing reliable maritime ventilation. Vehicle traffic on surrounding expressways and the free trade port, technology, and tourism corridor contribute local sources, while the outstanding tropical island coastal exposure and the frequent convective rain generally maintain Haikou among China's cleaner major tropical coastal cities throughout most of the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Fair
33.1/100
PM2.5 (fine particles):
Good
6.7/100
PM10 (coarse particles):
Good
2.4/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Fair
33.1/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.0/100
PM1 (ultrafine particles):
Good
7.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Medium
45.1/100
PM2.5 (fine particles):
Good
7.1/100
PM10 (coarse particles):
Good
2.1/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Medium
45.1/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.9/100
PM1 (ultrafine particles):
Good
9.6/100
Frequently Asked Questions
Is air quality bad in Haikou right now?
On 16 July 2026, overall air quality in Haikou is fair. AQI is the main air quality indicator at 33.1/100. Pollution peaks around 2:00 PM (O3: 33.1/100).
Will air quality be worse tomorrow in Haikou?
On 17 July 2026, air quality conditions in Haikou will be better than today, with AQI forecast at medium at 45.1/100. Pollution peaks around 3:00 PM (O3: 45.1/100).
When is air pollution at its worst in Haikou?
Pollution in Haikou typically rises when vehicle traffic together with seasonal tourism traffic combine, especially once the sea breeze weakens. Onshore breezes usually help clear the air, but pollution can build up when winds are light. This natural ventilation is one reason coastal areas often see better readings than inland cities.
Are air quality levels in Haikou based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app