Stay updated with real-time air quality in Hilo, 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)
19
Good
Hilo, Hawaii
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.13 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
5.10 μg/m³
0
55
155
255
425
605+
20.24 ppb
0
55
71
86
201
201+
3.35 ppb
0
36
76
186
605
1005+
1.76 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hilo, Hawaii
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AQI 19
Good
1.33μg/m³
PM2.5
5.49μg/m³
PM10
20.25ppb
O3
3.07ppb
SO2
1.76ppb
NO2
0.27ppm
CO
AQI 19
Good
1.80μg/m³
PM2.5
7.81μg/m³
PM10
20.02ppb
O3
4.05ppb
SO2
1.76ppb
NO2
0.27ppm
CO
AQI 49
Good
9.44μg/m³
PM2.5
41.93μg/m³
PM10
20.18ppb
O3
4.03ppb
SO2
1.76ppb
NO2
0.27ppm
CO
AQI 19
Good
0.53μg/m³
PM2.5
2.05μg/m³
PM10
20.25ppb
O3
4.36ppb
SO2
1.76ppb
NO2
0.28ppm
CO
AQI 19
Good
3.23μg/m³
PM2.5
14.24μg/m³
PM10
20.19ppb
O3
4.36ppb
SO2
1.76ppb
NO2
0.28ppm
CO
AQI 19
Good
3.25μg/m³
PM2.5
14.32μg/m³
PM10
20.19ppb
O3
4.36ppb
SO2
1.76ppb
NO2
0.28ppm
CO
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.
Source: Ambee Data Sources
The air quality for Hilo, Hawaii is updated every hour.
The worst air quality in Hilo, Hawaii in the last 24 hours was observed at 01:00:00 on 2026-06-30.
In the last 24 hrs, the best air quality in Hilo, Hawaii was observed at 11:00:00 on 2026-06-30.
The current air quality in Hilo, Hawaii is 19, categorized as Good based on real-time data.
The most common pollutant in Hilo, Hawaii is O3.
If the air quality in Hilo, Hawaii is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Hilo, Hawaii is 1.125 μg/m3.
The current PM10 concentration at Hilo, Hawaii is 5.1 μg/m3.
The current carbon monoxide (CO) concentration at Hilo, Hawaii is 0.268 ppm.
The current sulfur dioxide (SO2) concentration at Hilo, Hawaii is 3.348 ppb.
The current ozone (O3) concentration at Hilo, Hawaii is 20.236 ppm.
The current nitrogen dioxide (NO2) concentration at Hilo, Hawaii is 1.759 ppb.
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