Chillicothe, Iowa Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Chillicothe weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Drizzle48%0.04″85°68°—
- SundayJul 5Overcast13%—88°67°+3°
- MondayJul 6Overcast——88°67°0°
- TuesdayJul 7Thunderstorm——85°66°-3°
- WednesdayJul 8T-storm w/ Hail32%—88°67°+3°
- ThursdayJul 9Showers44%0.31″80°68°-8°
- FridayJul 10Overcast17%—82°67°+2°
AQI 45 (Good), driven by PM2.5. AQI up 13 over the last 6 hours (gradual rise). PM2.5 at 7.0 µg/m³ (AQI 39) with a 0.84 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
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 32 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 8 around 1 PM.
- Present
- AQI 32
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 7.0 µg/m³ (AQI 39) with a 0.84 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.84
- 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
- 11:29 PM
- Moonset
- 11:22 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Chillicothe at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: April 23 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 52548
16-Day Forecast — Chillicothe
- Sat85°68°48%
- Sun86°68°13%
- Mon82°67°2%
- Tue85°66°0%
- Wed88°67°32%
- Thu80°68°44%
- Fri82°67°17%
- Sat77°66°6%
- Sun77°59°10%
- Mon83°60°5%
- Tue86°67°6%
- Wed85°70°9%
- Thu90°70°18%
- Fri90°73°19%
- Sat92°77°11%
- Sun87°66°13%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 includes Chillicothe in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- 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 Chillicothe
- 52548
- 52501