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Live air quality index in Urban Honolulu, Hawaii today

Stay updated with real-time air quality in Urban Honolulu, Hawaii featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.

Live AQI (Air Quality Index)

23

Good

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Urban Honolulu, Hawaii

Last updated: ... (Local time)

Major air pollutants in Urban Honolulu, Hawaii

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter2.5 (PM2.5)

4.03 μg/m³

0

12.1

35.5

55.5

250.5

500.5+

Particulate Matter10 (PM10)

13.15 μg/m³

0

55

155

255

425

605+

Ozone (O3)

24.89 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

1.00 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

2.41 ppb

0

54

101

361

1250

2050+

Carbon Monoxide (CO)

0.10 ppm

0

4.5

9.5

12.5

230.5

50.5+

Pollen Level

no-result

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How accurate is Hawaii, USA air quality data?

Air quality data and pollutant measurements for Hawaii, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.


Frequently asked questions

How often is the air quality data for Urban Honolulu, Hawaii updated?

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The air quality for Urban Honolulu, Hawaii is updated every hour.


When was the worst air quality at Urban Honolulu, Hawaii in the last 24 hrs?

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The worst air quality in Urban Honolulu, Hawaii in the last 24 hours was observed at 05:00:00 on 2025-06-16.


When was the best air quality at Urban Honolulu, Hawaii in the last 24 hrs?

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In the last 24 hrs, the best air quality in Urban Honolulu, Hawaii was observed at 09:00:00 on 2025-06-15.


What is the current air quality in Urban Honolulu, Hawaii?

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The current air quality in Urban Honolulu, Hawaii is 22, categorized as Good based on real-time data.


What pollutant is the most common in Urban Honolulu, Hawaii?

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The most common pollutant in Urban Honolulu, Hawaii is PM2.5.


What should I do if the air quality in Urban Honolulu, Hawaii is poor?

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If the air quality in Urban Honolulu, Hawaii is poor, consider staying indoors and wearing a mask to protect yourself.


What is the current concentration of PM2.5 in Urban Honolulu, Hawaii?

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The current PM2.5 concentration at Urban Honolulu, Hawaii is 4.277 μg/m3.


What is the current concentration of PM10 in Urban Honolulu, Hawaii?

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The current PM10 concentration at Urban Honolulu, Hawaii is 13.578 μg/m3.


What is the current concentration of carbon monoxide (CO) in Urban Honolulu, Hawaii?

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The current carbon monoxide (CO) concentration at Urban Honolulu, Hawaii is 0.24 ppm.


What is the current concentration of sulfur dioxide (SO2) in Urban Honolulu, Hawaii?

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The current sulfur dioxide (SO2) concentration at Urban Honolulu, Hawaii is 1 ppb.


What is the current concentration of ozone (O3) in Urban Honolulu, Hawaii?

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The current ozone (O3) concentration at Urban Honolulu, Hawaii is 22.004 ppm.


What is the current concentration of nitrogen dioxide (NO2) in Urban Honolulu, Hawaii?

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The current nitrogen dioxide (NO2) concentration at Urban Honolulu, Hawaii is 0.837 ppb.


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