Pekin, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Pekin weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Showers56%0.52″85°69°—
- SundayJul 5Overcast16%—84°69°-1°
- MondayJul 6Partly Cloudy——82°65°-2°
- TuesdayJul 7Partly Cloudy——81°61°-1°
- WednesdayJul 8Light Drizzle10%—85°64°+4°
- ThursdayJul 9Thunderstorm37%0.04″82°70°-3°
- FridayJul 10Overcast37%—78°66°-4°
AQI 27 (Good), driven by PM2.5. AQI down 10 over the last 6 hours (gradual decline). PM2.5 at 7.3 µg/m³, PM10 at 8.1 µg/m³ — typical background levels with no transport signature.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 30 now. With UV 4.2 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 12 around 1 PM.
- Present
- AQI 30
- UV peak
- 4.2 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 12
PM × Wind × Precip
PM2.5 at 7.3 µg/m³, PM10 at 8.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.90
- Wind
- light
- Recent rain
- 1h 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:54 PM
- Moonset
- 10:04 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Pekin at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: April 19 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61554
16-Day Forecast — Pekin
- Sat85°69°56%
- Sun84°69°16%
- Mon82°65°4%
- Tue81°61°4%
- Wed85°64°10%
- Thu82°70°37%
- Fri78°66°37%
- Sat83°66°21%
- Sun71°59°9%
- Mon74°57°7%
- Tue77°61°9%
- Wed79°63°16%
- Thu83°65°20%
- Fri83°69°29%
- Sat86°70°32%
- Sun86°72°35%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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 — Pekin
SPC has placed Pekin in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- 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.
ZIP codes in Pekin
- 61554
- 61555
- 61558