Waipahu, Hawaii Weather
First trades stir the ceiba canopy. Day 77 of spring. Read this microseason across nine climate regions →
Waipahu weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Light Drizzle85%—87°75°—
- ThursdayJun 4Light Drizzle100%0.01″85°73°-2°
- FridayJun 5Mostly Clear91%—86°74°+1°
- SaturdayJun 6Light Drizzle87%—85°73°-1°
- SundayJun 7Light Drizzle92%0.01″85°72°0°
- MondayJun 8Light Drizzle93%—84°72°-1°
- TuesdayJun 9Light Drizzle86%0.02″86°72°+2°
PM2.5/PM10 ratio 0.59 with 14 mph wind — characteristic of long-range haze transport rather than a local source. AQI flat over the last 6 hours (within ±3 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5/PM10 ratio 0.59 with 14 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.59
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- transport
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 8:21 AM
- Moonset
- 7:29 PM
- In sign
- ♑︎ Capricorn
First trades stir the ceiba canopy
Waipahu at a glance
- Today vs. normal: 15°F below the seasonal normal for this latitude
- Last frost: December 25 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.