Worst air pollution Kauai, today and tomorrow
Today (30 August): Air quality in Kauai is moderate. AQI and PM2.5 are moderate; PM10 and O3 are fair; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (PM2.5: 40.0/100).
Tomorrow (31 August 2026): Air quality in Kauai is moderate. PM10 increases to moderate; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 AM (PM10: 40.6/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Kauai's Na Pali Coast air quality benefits from its exceptional remote North Shore Pacific Ocean cliff face position, with consistent northeast Pacific trade winds providing outstanding maritime ventilation along these dramatic sea cliffs. Vehicle traffic is essentially absent on this largely inaccessible wilderness coast, while the extraordinary open-ocean exposure and the lush Nā Pali tropical forest provide outstanding natural conditions and the Hawaiian trade winds generally maintain excellent air quality throughout most of the year.
Today - 30 August | Pollution peaks at 23:00
AQI:
Moderate
40.0/100
PM2.5 (fine particles):
Moderate
40.0/100
PM10 (coarse particles):
Fair
39.1/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
22.8/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
4.8/100
Levels show the poorest local air quality during the day
Tomorrow - 31 August | Pollution peaks at 00:00
AQI:
Moderate
40.6/100
PM2.5 (fine particles):
Moderate
40.1/100
PM10 (coarse particles):
Moderate
40.6/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
17.1/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
4.8/100
Frequently Asked Questions
Is air quality bad in Kauai right now?
On 30 August 2026, overall air quality in Kauai is moderate. AQI is the main air quality indicator at 40.0/100. Pollution peaks around 11:00 PM (PM2.5: 40.0/100).
Will air quality be worse tomorrow in Kauai?
On 31 August 2026, air quality conditions in Kauai will be similar to today, with AQI forecast at moderate at 40.6/100. Pollution peaks around 12:00 AM (PM10: 40.6/100).
When is air pollution at its worst in Kauai?
Air quality around Na Pali Coast changes with the seasons — spring and autumn tend to bring the cleanest, most stable air, whereas prolonged summer heat waves are when air quality most often dips into unhealthy territory. Calm, cold winter spells can occasionally allow local pollution to build up before the next weather system clears it.
Are air quality levels in Kauai 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 30 August 2026 at 20:26 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
Get the full experience in the Airmine app.