Larchwood, Iowa Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Larchwood weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Foggy10%—88°66°—
- SundayJul 5Mostly Clear——88°65°0°
- MondayJul 6Overcast——87°66°-1°
- TuesdayJul 7Drizzle20%—91°67°+4°
- WednesdayJul 8Light Showers38%—80°66°-11°
- ThursdayJul 9Overcast35%—79°61°-1°
- FridayJul 10Overcast11%—80°61°+1°
AQI 41 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 49 now. With UV 6.7 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 31 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 49 now. With UV 6.7 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 31 around 1 PM.
- Present
- AQI 49
- UV peak
- 6.7 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 31
PM × Wind × Precip
PM2.5 at 8.6 µg/m³ (AQI 48) with a 0.77 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.77
- 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
- 11:26 PM
- Moonset
- 10:28 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Larchwood at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: May 7 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 51241
16-Day Forecast — Larchwood
- Sat88°66°10%
- Sun88°65°5%
- Mon87°66°2%
- Tue91°67°20%
- Wed80°66°38%
- Thu79°61°35%
- Fri80°61°11%
- Sat80°58°12%
- Sun83°59°7%
- Mon85°59°5%
- Tue88°62°7%
- Wed93°66°11%
- Thu91°67°13%
- Fri87°61°17%
- Sat76°58°16%
- Sun85°55°19%
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 — Larchwood
SPC has placed Larchwood in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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 Larchwood
- 51241