Trenton, Iowa Weather
Lesser ripening, greater heat. Day 90 of spring. Read this microseason across nine climate regions →
Trenton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 17Light Rain82%0.24″77°58°—
- ThursdayJun 18Overcast——74°59°-3°
- FridayJun 19Light Drizzle——75°58°+1°
- SaturdayJun 20Drizzle13%0.04″78°60°+3°
- SundayJun 21Showers75%2.3″65°54°-13°
- MondayJun 22Partly Cloudy40%—70°49°+5°
- TuesdayJun 23Overcast——74°57°+4°
AQI 32 (Good), driven by Ozone. AQI up 6 over the last 6 hours (gradual rise). Ozone at AQI 47 — 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 47 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 47
- UV peak
- 5.8 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 47
PM × Wind × Precip
PM2.5 at 7.4 µg/m³, PM10 at 8.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.89
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 8:03 AM
- Moonset
- 10:48 PM
- In sign
- ♌︎ Leo
Lesser ripening, greater heat
Trenton at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: April 22 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Trenton
- Wed77°58°82%
- Thu74°59°7%
- Fri75°58°3%
- Sat78°60°13%
- Sun65°54°75%
- Mon70°49°40%
- Tue74°57°5%
- Wed75°60°8%
- Thu74°58°32%
- Fri74°64°32%
- Sat77°67°29%
- Sun82°66°42%
- Mon78°65°37%
- Tue80°64°42%
- Wed74°64°36%
- Thu77°65°35%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 17, 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 — Trenton
SPC has placed Trenton in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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 Trenton
- 52641