Air Quality in Waipahu, United States

Partly Cloudy
23.6°C · 68.4% humidity
23.6°
Feels 23.6°
2
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast
27 10am
27
27
2 1pm
9
14
18 4pm
20
22
24 7pm
25
32
33 10pm
33
33
34 1am
34
27
27 4am
27
27
27 7am
27
27
AD 728×90

Air Quality Index Trend

40h · 4 stn

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

68.4%
Humidity
35.1 km/h
Wind ENE
1015.7 hPa
Pressure
29.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
2
0.5 µg/m³
PM10▲
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Waipahu?

Temperature & Precipitation

PM2.5 Trend

40h · 4 stations
PM2.50.5 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX29.9
Extreme
AD 300×250
Station readings (1 station within 25 km)
0.5
Median
0.5
Average
0.5
Low
0.5
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +5.8

What is the 7-day forecast for Waipahu?

08-03
27.9° 22.2°
1.37 mm
08-04
27.1° 22.6°
0.63 mm
08-05
26.9° 21.1°
1.06 mm
08-06
28.8° 22.1°
0.69 mm
08-07
26.8° 21.2°
1.0 mm
08-08
28.8° 22.5°
0.44 mm
08-09
29.0° 22.3°
6.63 mm
Both models agree Avg diff: 2.9°C

Where are air quality stations near Waipahu?

2
Kapolei, Hawaii, USA
10.8 km PM2.5: 0.5 µg/m³
2
Kapolei, Hawaii, USA
10.8 km PM2.5: 0.5 µg/m³
42
Sand Island, Hawaii, USA
17.0 km PM2.5: 10.1 µg/m³
13
Honolulu, Hawaii, USA
18.2 km PM2.5: 3.1 µg/m³
13
Honolulu, Hawaii, USA
18.2 km PM2.5: 3.1 µg/m³
12
Honolulu, Hawaii, USA
18.2 km PM2.5: 2.9 µg/m³

What cities are near Waipahu?

2 Pearl City 2 ‘Ewa Gentry 2 Mililani Town 2 Kapolei 2 Joint Base Pearl Harbor Hickam 2 ‘Ewa Beach 2 Makakilo 2 Makakilo City 2 Airport 2 Aliamanu / Salt Lakes / Foster Village
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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 2026-08-07T23:55 UTC.