Chillicothe, Iowa Weather
Prairie lightning bugs rise. Day 77 of spring. Read this microseason across nine climate regions →
Chillicothe weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Mostly Clear——84°57°—
- ThursdayJun 4Overcast28%—87°59°+3°
- FridayJun 5Thunderstorm65%0.27″84°67°-3°
- SaturdayJun 6Thunderstorm60%—83°66°-1°
- SundayJun 7Heavy Showers49%—85°70°+2°
- MondayJun 8Light Showers53%0.01″80°69°-5°
- TuesdayJun 9Thunderstorm30%—88°70°+8°
Ozone at AQI 65. AQI up 39 in the last 6 hours — air quality is degrading. Overcast through the UV peak window (cloud cover ~70%) — afternoon ozone should stay flat.
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 65. Overcast through the UV peak window (cloud cover ~70%) — afternoon ozone should stay flat.
- Present
- AQI 65
- UV peak
- 0.1 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 8
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
- 4:43 AM
- Moonset
- 2:09 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
Chillicothe at a glance
- Today vs. normal: 73°F — typical for the season
- Last frost: April 23 (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 — Chillicothe
SPC has placed Chillicothe in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3MRGLMarginal Risk
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.