Air Quality in Waipahu, United States
Drizzle
25.0°C · 68.7% humidity
25.0°
Feels 25.0°
14
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Waipahu's air quality — share it
AQI Forecast
Calibrated
19
10am
19
21
14
1pm
16
15
16
4pm
17
18
18
7pm
18
19
19
10pm
19
21
21
1am
21
19
19
4am
19
19
21
7am
21
21
Station readings
25h ago
AQI 21
PM2.5 5.0 µg/m³ · 25h ago
Air Quality Index Trend
31h · 2 stnWaipahu's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
68.7%
Humidity
77.1 km/h
Wind ENE
1017.6 hPa
Pressure
29.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
3.26 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Waipahu?
Temperature & Precipitation
PM2.5 Trend
31h · 2 stationsPM2.53.26 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX29.9
Extreme
Station readings (2 stations within 25 km)
3.26
Median
3.25
Average
3.1
Low
3.4
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +3.0
What is the 7-day forecast for Waipahu?
06-08
27.1° 21.2°
1.44 mm
06-09
25.0° 20.7°
0.81 mm
06-10
26.6° 22.1°
1.0 mm
06-11
27.1° 21.3°
0.5 mm
06-12
25.4° 21.5°
1.19 mm
06-13
25.7° 20.2°
0.81 mm
06-14
25.8° 21.5°
0.81 mm
Both models agree
Avg diff: 2.1°C
Where are air quality stations near Waipahu?
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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 2026-06-08T23:01 UTC.