Clarksville, Iowa Weather
Prairie lightning bugs rise. Day 77 of spring. Read this microseason across nine climate regions →
Clarksville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Heavy Rain71%1.5″83°60°—
- FridayJun 5Thunderstorm72%0.82″79°65°-4°
- SaturdayJun 6Overcast38%—84°67°+5°
- SundayJun 7Showers53%0.13″81°68°-3°
- MondayJun 8Light Showers58%0.02″83°68°+2°
- TuesdayJun 9Heavy Drizzle43%—85°66°+2°
- WednesdayJun 10Overcast16%—84°71°-1°
Ozone at AQI 47 now. AQI flat over the last 6 hours (within ±3 points). With UV 7.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 46 by mid-afternoon.
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 now. With UV 7.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 46 by mid-afternoon.
- Present
- AQI 47
- UV peak
- 7.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 46
PM × Wind × Precip
PM2.5 at 7.3 µg/m³, PM10 at 8.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.88
- Wind
- breezy
- 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
- 4:49 AM
- Moonset
- 2:04 PM
- In sign
- ♒︎ Aquarius
Prairie lightning bugs rise
Clarksville at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: May 3 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 — Clarksville
SPC has placed Clarksville in the Slight Risk category for severe thunderstorms tomorrow.
- TODAYMRGLMarginal Risk
- TOMORROWSLGTSlight Risk
- DAY 3TSTMGeneral Thunderstorms
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.