Pekin, Illinois Weather
Sun climbs to its northern throne. Day 88 of spring. Read this microseason across nine climate regions →
Pekin weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Mostly Clear——78°52°—
- TuesdayJun 16Overcast18%—76°57°-2°
- WednesdayJun 17T-storm w/ Hvy Hail92%—81°58°+5°
- ThursdayJun 18Overcast75%—71°55°-10°
- FridayJun 19Overcast——72°55°+1°
- SaturdayJun 20Overcast13%—76°54°+4°
- SundayJun 21Drizzle47%—77°63°+1°
AQI 28 (Good), driven by Ozone. Ozone at AQI 46 now. With UV 5.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 36 around 1 PM.
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 46 now. With UV 5.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 36 around 1 PM.
- Present
- AQI 46
- UV peak
- 5.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 36
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
- 5:29 AM
- Moonset
- 8:48 PM
- In sign
- ♋︎ Cancer
Sun climbs to its northern throne
Pekin at a glance
- Today vs. normal: 76°F — typical for the season
- Last frost: April 19 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Pekin
- Mon78°52°0%
- Tue76°57°18%
- Wed81°58°92%
- Thu71°55°75%
- Fri72°55°3%
- Sat76°54°13%
- Sun77°63°47%
- Mon80°68°47%
- Tue69°64°12%
- Wed74°64°8%
- Thu77°62°14%
- Fri80°61°25%
- Sat72°64°39%
- Sun76°62°31%
- Mon77°61°33%
- Tue69°57°45%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Pekin
SPC has placed Pekin in the Enhanced Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3ENHEnhanced 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 Pekin
- 61554
- 61555
- 61558