Henderson, Iowa Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Henderson weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Showers64%0.09″83°69°—
- SundayJul 5Overcast——89°68°+6°
- MondayJul 6Mostly Clear——85°66°-4°
- TuesdayJul 7Overcast——85°66°0°
- WednesdayJul 8Light Drizzle38%—92°69°+7°
- ThursdayJul 9Light Showers50%0.03″83°68°-9°
- FridayJul 10Heavy Drizzle13%0.02″83°65°0°
AQI 33 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 43 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 43 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 43
- UV peak
- 5.5 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 43
PM × Wind × Precip
PM2.5 at 6.2 µg/m³ (AQI 34) with a 0.83 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.83
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:18 PM
- Moonset
- 10:27 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Henderson at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: April 23 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 51541
16-Day Forecast — Henderson
- Sat85°69°64%
- Sun89°69°7%
- Mon85°66°2%
- Tue85°66°1%
- Wed92°69°38%
- Thu83°68°50%
- Fri83°65°13%
- Sat78°59°7%
- Sun80°60°8%
- Mon80°60°7%
- Tue80°60°4%
- Wed82°60°9%
- Thu90°66°16%
- Fri88°67°22%
- Sat79°63°26%
- Sun74°60°13%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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.
SPC Convective Outlook
Storm Prediction Center — Henderson
SPC includes Henderson in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Henderson
- 51541