South Pekin, Illinois Weather
Heat settles and the rain begins. Day 90 of spring. Read this microseason across nine climate regions →
South Pekin weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 17Heavy Rain99%1.7″68°54°—
- ThursdayJun 18Overcast——72°58°+4°
- FridayJun 19Light Drizzle——77°57°+5°
- SaturdayJun 20Drizzle—0.09″78°62°+1°
- SundayJun 21Light Showers80%4.2″66°53°-12°
- MondayJun 22Mostly Clear67%—72°47°+6°
- TuesdayJun 23Overcast——74°56°+2°
AQI 29 (Good), driven by Ozone. AQI up 9 over the last 6 hours (gradual rise). Ozone at AQI 34 — 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 34 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 34
- UV peak
- 0.7 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 34
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 5.7 µg/m³, PM10 to 6.2 µg/m³.
- PM2.5/PM10
- 0.92
- Wind
- calm
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 7:56 AM
- Moonset
- 10:37 PM
- In sign
- ♌︎ Leo
Heat settles and the rain begins
South Pekin at a glance
- Today vs. normal: 8°F below the seasonal normal for this latitude
- Last frost: April 19 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — South Pekin
- Wed68°54°99%
- Thu72°58°3%
- Fri77°57°1%
- Sat78°62°8%
- Sun66°53°80%
- Mon72°47°67%
- Tue74°56°5%
- Wed77°61°9%
- Thu78°59°28%
- Fri80°64°32%
- Sat79°67°26%
- Sun82°67°52%
- Mon79°66°55%
- Tue79°65°53%
- Wed79°64°42%
- Thu76°62°33%
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 — South Pekin
SPC has placed South Pekin in the Enhanced Risk category for severe thunderstorms today.
- TODAYENHEnhanced Risk
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
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 South Pekin
- 61554
- 61564