Pekin, IL 61555 Weather

Tazewell County9:45 AM CDT40.56°N, 89.65°W

Current conditions

Clear
50°
Clear
Feels like 50°
High 77°·Low 48°
WindCalm
Humidity94%
Dew point48°
Pressure30.28 inHg
Visibility10 mi
Cloud cover1%
UV index1 Low
Sunrise7:18 AM
Sunset6:10 PM

Observed at Peoria - General Downing-Peoria International Airport · 1 hr ago

Forecast

10-day

  • Today

    Sunny, with a high near 77. Wind around 0 mph.

  • Tonight

    Clear, with a low around 48. Northeast wind around 2 mph.

  • Friday

    Sunny, with a high near 75. Southeast wind 1 to 6 mph.

National Weather Service forecast updated 9 min ago.

Hourly

Hourly forecast
  1. Now Sunny 51°
  2. 10 AM Sunny 57°
  3. 11 AM Sunny 62°
  4. 12 PM Sunny 66°
  5. 1 PM Sunny 70°
  6. 2 PM Sunny 75°
  7. 3 PM Sunny 76°
  8. 4 PM Sunny 77°
  9. 5 PM Sunny 75°
  10. 6 PM Clear 72°
  11. 7 PM Clear 68°
  12. 8 PM Clear 63°
  13. 9 PM Clear 61°
  14. 10 PM Clear 59°
  15. 11 PM Clear 57°
  16. Fri12 AM Clear 56°
  17. 1 AM Clear 55°
  18. 2 AM Clear 54°
  19. 3 AM Clear 53°
  20. 4 AM Clear 52°
  21. 5 AM Clear 51°
  22. 6 AM Sunny 50°
  23. 7 AM Sunny 50°
  24. 8 AM Sunny 51°

10-day forecast

Details
  1. TodayOct 22 Sunny Sunny48°77°
  2. FriOct 23 Sunny Sunny49°75°
  3. SatOct 24 Mostly Sunny Mostly Sunny50°74°
  4. SunOct 25 Partly Sunny Partly Sunny51°77°
  5. MonOct 26 Partly Sunny Partly Sunny50°75°
  6. TueOct 27 Partly Sunny Partly Sunny46°68°
  7. WedOct 28 Mostly Sunny Mostly Sunny47°67°
  8. ThuOct 29 Cloudy Cloudy0.05 in39°61°
  9. FriOct 30 Sunny Sunny34°50°
  10. SatOct 31 Partly cloudy Partly cloudy36°56°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news in Illinois

More weather news

Air quality

59
Moderate
Fine particles (PM2.5)

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Forecast

  • ThuModerate
  • FriModerate
  • SatModerate

Peoria, IL reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:18 AM
Sunset 6:10 PM
Daylight 10 h 51 min (−2 min 31 s tomorrow)
Waxing Gibbous · 85% lit
Moonrise 4:13 PM Moonset 3:22 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low63° / 42°
Record high84° (1927)
Record low22° (1976)
Wettest1.89 in (2009)
Month to date1.06 in (normal 2.12 in)

General Wayne A. Downing International Ap, records since 1896. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in ILX, issued 21 hrs ago

Key Messages

- Sunny mild days and cool nights persist across central and southeast Illinois through Sunday, with highs in the mid- upper 70s and lows in the 40s.

- A cold front moves across the region early next week, bringing prospects for light rain, followed by cooler temperatures.

Discussion

Issued at 1211 PM CDT Wed Oct 21 2026

Surface ridge axis centered across the area provides quiet, clear conditions across central and southeast Illinois. Dry air and subsidence will continue to produce mainly clear skies and large diurnal temperature swings over the next several days.

Mid-level heights build across the Mississippi Valley Friday and this weekend as the surface high slips farther east. Models show strong consensus on establishing persistent southerly return flow. 850-hPa temperatures in the lower teens C, along with deeper mixing support afternoon highs around 80F on Sunday, around 15 degrees above climatological averages.

Medium-range deterministic solutions (ECMWF, ECMWF-AI, and GFS) and the ensemble suite diverge early next week regarding the progression of an upstream longwave trough and associated surface cold front. The deterministic GFS exhibits a faster frontal transit across central Illinois Monday evening with stronger pre-frontal 850-hPa flow (4050 kt). Conversely, the ECMWF and ECMWF-AI are roughly 6 to 12 hours slower, maintaining a broader frontal structure and tracking the primary boundary through the forecast area Tuesday. GEFS and ECMWF ensemble members favor this slower progression. Latest NBM run has lowered PoPs below mentionable levels, but this will likely change as the system develops. Behind the front, a shot of cooler air will move in, returning temperatures to more seasonable levels Tue-Wed.

Aviation

Issued at 1211 PM CDT Wed Oct 21 2026

Another cycle of VFR conditions and light/variable winds with high pressure in control.

Ilx Watches

None.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.