Holstein, Iowa Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Holstein weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast12%—84°70°—
- SundayJul 5Overcast13%—88°67°+4°
- MondayJul 6Mostly Clear——90°67°+2°
- TuesdayJul 7Overcast——89°68°-1°
- WednesdayJul 8Drizzle31%—87°67°-2°
- ThursdayJul 9Light Drizzle23%—76°62°-11°
- FridayJul 10Mostly Clear10%—85°62°+9°
AQI 44 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 37 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 9 around 1 PM.
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 37 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 9 around 1 PM.
- Present
- AQI 37
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5 at 5.0 µg/m³ (AQI 28) with a 0.88 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.88
- 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
- 11:43 PM
- Moonset
- 11:34 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Holstein at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: May 1 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 51025
16-Day Forecast — Holstein
- Sat84°70°12%
- Sun88°67°13%
- Mon90°67°3%
- Tue89°68°4%
- Wed87°67°31%
- Thu76°62°23%
- Fri85°62°10%
- Sat79°64°7%
- Sun82°61°7%
- Mon89°65°3%
- Tue94°70°4%
- Wed94°69°5%
- Thu100°74°10%
- Fri99°78°14%
- Sat98°70°24%
- Sun86°64°11%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Holstein
SPC includes Holstein in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- 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 Holstein
- 51025