Worst air pollution Waikiki - Honolulu, today and tomorrow
Today (15 July): Air quality in Waikiki is poor. AQI and PM10 are poor; O3 is fair; PM2.5 is medium; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 PM (PM10: 61.5/100).
Tomorrow (16 July 2026): Air quality in Waikiki is fair. AQI improves to medium; PM10 decreases to medium; all other pollutants stay as today. Pollution peaks around 12:00 AM (PM10: 59.0/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Honolulu's Waikiki air quality benefits from its exceptional Pacific Ocean and Diamond Head coastal position, with consistent northeast Pacific trade winds providing reliable and powerful maritime ventilation along the famous beach resort corridor. Vehicle traffic on Kalakaua Avenue and the concentrated resort development contribute seasonal local sources, while the outstanding Pacific trade wind exposure and the open ocean geometry generally maintain Waikiki among Hawaii's more reliably ventilated major resort environments throughout most of the year.
Today - 15 July | Pollution peaks at 21:00
AQI:
Poor
61.5/100
PM2.5 (fine particles):
Medium
46.0/100
PM10 (coarse particles):
Poor
61.5/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
23.3/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.3/100
PM1 (ultrafine particles):
Good
7.5/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 00:00
AQI:
Medium
59.0/100
PM2.5 (fine particles):
Medium
45.2/100
PM10 (coarse particles):
Medium
59.0/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
23.3/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.4/100
PM1 (ultrafine particles):
Good
7.0/100
Other Landmarks in Honolulu
Frequently Asked Questions
Is air quality bad in Waikiki right now?
On 15 July 2026, overall air quality in Waikiki is poor. AQI is the main air quality indicator at 61.5/100. Pollution peaks around 9:00 PM (PM10: 61.5/100).
Will air quality be worse tomorrow in Waikiki?
On 16 July 2026, air quality conditions in Waikiki will be better than today, with O3 forecast at fair at 23.3/100. Pollution peaks around 12:00 AM (PM10: 59.0/100).
When is air pollution at its worst in Waikiki?
Conditions at Waikiki vary noticeably across the seasons, as spring and autumn tend to bring the cleanest, most stable air; by contrast, hot, humid summer conditions drive ozone formation, especially during heat waves. Calm, cold winter spells can occasionally allow local pollution to build up before the next weather system clears it.
Are air quality levels in Waikiki 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