Worst air pollution Nuuanu - Honolulu, today and tomorrow
Today (15 July): Air quality in Nuuanu 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: 60.6/100).
Tomorrow (16 July 2026): Air quality in Nuuanu is fair. AQI improves to medium; PM10 decreases to medium; all other pollutants stay as today. Pollution peaks around 12:00 AM (PM10: 58.1/100). 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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Honolulu's Nuuanu air quality reflects the historic valley residential neighbourhood at the Pali Pass, with vehicle traffic on the surrounding Nuuanu Avenue corridor contributing modest local sources. The Nuuanu Valley's trade wind corridor channels fresh Pacific air directly through this natural ventilation pathway, while the valley's green watershed and the outstanding trade wind exposure generally maintain Nuuanu among Honolulu's more pleasantly ventilated inner valley environments throughout most of the year.
Today - 15 July | Pollution peaks at 21:00
AQI:
Poor
60.6/100
PM2.5 (fine particles):
Medium
45.6/100
PM10 (coarse particles):
Poor
60.6/100
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
7.3/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 00:00
AQI:
Medium
58.1/100
PM2.5 (fine particles):
Medium
44.8/100
PM10 (coarse particles):
Medium
58.1/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Fair
23.3/100
SO2 (sulfur dioxide):
Good
0.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.4/100
PM1 (ultrafine particles):
Good
6.8/100
Other Landmarks in Honolulu
Frequently Asked Questions
Is air quality bad in Nuuanu right now?
On 15 July 2026, overall air quality in Nuuanu is poor. AQI is the main air quality indicator at 60.6/100. Pollution peaks around 9:00 PM (PM10: 60.6/100).
Will air quality be worse tomorrow in Nuuanu?
On 16 July 2026, air quality conditions in Nuuanu will be better than today, with O3 forecast at fair at 23.3/100. Pollution peaks around 12:00 AM (PM10: 58.1/100).
When is air pollution at its worst in Nuuanu?
At Nuuanu, air quality tends to follow Honolulu's broader seasonal rhythm, as the mildest, cleanest weather usually falls in spring and autumn; by contrast, hot, humid summer conditions drive ozone formation, especially during heat waves. Lake-effect winds can help clear the air on many days near the Great Lakes shoreline.
Are air quality levels in Nuuanu 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