California Junction, Iowa Weather
Lesser ripening, greater heat. Day 89 of spring. Read this microseason across nine climate regions →
California Junction weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Overcast——78°58°—
- WednesdayJun 17Overcast11%—84°63°+6°
- ThursdayJun 18Overcast——75°58°-9°
- FridayJun 19Overcast——79°55°+4°
- SaturdayJun 20Light Showers66%0.27″72°61°-7°
- SundayJun 21Drizzle78%0.04″72°64°0°
- MondayJun 22Overcast22%—74°56°+2°
AQI 37 (Good), driven by Ozone. AQI up 11 over the last 6 hours (gradual rise). Ozone at AQI 48 — peak already passed at 1 PM under clear 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 48 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 48
- UV peak
- 6.6 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 48
PM × Wind × Precip
PM2.5 at 5.3 µg/m³, PM10 at 6.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.84
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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).
Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 7:02 AM
- Moonset
- 10:19 PM
- In sign
- ♋︎ Cancer
Lesser ripening, greater heat
California Junction at a glance
- Today vs. normal: 4°F above the seasonal normal for this latitude
- Last frost: April 25 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — California Junction
- Tue77°58°4%
- Wed84°63°11%
- Thu75°58°4%
- Fri79°55°6%
- Sat72°61°66%
- Sun72°64°78%
- Mon74°56°22%
- Tue78°63°11%
- Wed83°62°20%
- Thu84°63°22%
- Fri93°73°21%
- Sat95°75°27%
- Sun96°70°32%
- Mon92°74°40%
- Tue93°72°26%
- Wed86°71°24%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 16, 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 — California Junction
SPC has placed California Junction in the General Thunderstorms category for severe thunderstorms today.
- 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 California Junction
- 51555