What is the air quality in Hilo today?

The current Air Quality Index (AQI) in Hilo is 31 (Good). PM2.5 concentration is 7.46 µg/m³.

What is the temperature in Hilo right now?

The current temperature in Hilo is 20.5°C (feels like 20.5°C). Humidity is 64.3% and wind speed is 54.4 km/h.

Is it safe to go outside in Hilo?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Hilo, United States

Windy

20.5°C · 64.3% humidity

20.5°

Feels 20.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

4 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

40h · 1 stn

View full history →

Hilo's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

64.3%

Humidity

54.4 km/h

Wind ESE

1018.0 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.46 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Hilo?

Temperature & Precipitation

PM2.5 Trend

40h · 1 station

PM2.57.46 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (4 stations within 25 km)

7.46

Median

5.8

Average

3.1

Low

11.0

High

PM2.5 µg/m³ · Model: 6.0 · Bias: -1.5

What is the 7-day forecast for Hilo?

10-20

19.5° 16.4°

1.31 mm

10-21

20.5° 14.9°

1.06 mm

10-22

19.0° 15.5°

4.19 mm

10-23

18.8° 16.1°

1.31 mm

10-24

19.2° 15.6°

4.81 mm

10-25

18.0° 15.3°

4.56 mm

10-26

20.7° 15.3°

1.06 mm

Both models agree Avg diff: 3.1°C

Where are air quality stations near Hilo?

Hilo, Hawaii, USA

2.5 km PM2.5: 11.0 µg/m³

Hilo, Hawaii, USA

2.5 km PM2.5: 4.1 µg/m³

Ks Hawaii, Hawaii, USA

13.6 km PM2.5: 3.1 µg/m³

Ks Hawaii, Hawaii, USA

13.6 km PM2.5: 14.0 µg/m³

Mountain View, Hawaii, USA

19.4 km PM2.5: 1.2 µg/m³

Mountain View, Hawaii, USA

19.4 km PM2.5: 5.0 µg/m³

What cities are near Hilo?

25 Kīhei 25 Kahului 25 Wailuku 16 Hawai‘i Kai 16 East Honolulu 16 Niu Valley 16 Kuliouou - Kalani Iki 16 Kaimukī 16 Diamond Head / Kapahulu / Saint Louis Heights 16 Kailua

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T23:40 UTC.