Weather StoryAlmanac, microseasons, and the day's weather story.

Peoria, Illinois Weather

Dusk arrives one minute earlier each night. Day 43 of summer. Read this microseason across nine climate regions →

Peoria weather forecast — hour by hour, 7-day outlook, NOAA radar

Peoria, IL
Sunday, August 2 at 11:02 AM
71
°
Partly Cloudy
Feels like
73°
Humidity
85%
Wind
10 mph
Sunrise
12:56 AM
Sunset
3:13 PM
Peoria, IL
Hour by hour · 24h
24-Hour ForecastPeoria, IL: 24-hour forecast. Temperatures range from 64 to 80 degrees Fahrenheit.
L 64°H 80°
Peoria, IL
7-day forecast
  1. Today
    Aug 2
    Overcast
    —
    —
    80°64°—
  2. Monday
    Aug 3
    Mostly Clear
    —
    —
    86°64°+6°
  3. Tuesday
    Aug 4
    Overcast
    —
    —
    84°64°-2°
  4. Wednesday
    Aug 5
    Heavy Drizzle
    54%
    0.03″
    84°62°0°
  5. Thursday
    Aug 6
    Showers
    67%
    0.29″
    83°68°-1°
  6. Friday
    Aug 7
    T-storm w/ Hail
    13%
    —
    86°65°+3°
  7. Saturday
    Aug 8
    Light Drizzle
    20%
    —
    96°70°+10°
Peoria, IL
Next 24 hours · Mild now
60°72°84°12p6p12a6anow 72°high 80°low 64°
Peoria, IL
Anemometer · 24h winds · from true
NESW
From · True
NNE
015° · steady
Direction
NNE
015°
Sustained
10
mph
Gust
19
mph
Peak 24h
39
avg 12 mph
Beaufort · 3 · GENTLE BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 12 mph · pk 39 mph @ 8:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 183SUSTGUST
−24h−18h−12h−6hnow
Light breeze holding from the nne.
Peoria, IL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
986.2
+1.0 mb in 3h · rising · 29.12 inHg
Now
986.2
mb
3h
+1.0
mb
12h
+2.6
mb
24h
+6.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 979–986
970975980985990-21h-18h-15h-12h-9h-6h-3h-24hNOW985.4978.9985.3
The low is filling — pressure climbing out of storm territory.
Peoria, IL
Air quality
30
AQI
Good
→-3 in 6h▲Peak ~36 @ 10 PM

AQI 30 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 30 now. With UV 2.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 11.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.

PM 2.5Good
5.3μg/m³
PM 10Good
6μg/m³
NO₂Good
3μg/m³
OzoneDRIVERModerate
63μg/m³
UV IndexLow
2.0

What's driving it

Ozone × UV × Sky

Ozone at AQI 30 now. With UV 2.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 11.

Present
AQI 30
UV peak
2.8 at 1 PM
Sky at peak
clear
Projected peak
AQI 11

PM × Wind × Precip

PM2.5 at 5.3 µg/m³, PM10 at 5.5 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.96
Wind
breezy
Recent rain
0h 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).

7-DAY AQI TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³320
Peoria, IL
Sky cover · visibility · 24h
Cloud cover
69%
PARTLY CLOUDY
100%0%−24h−18h−12h−6hnow
Visibility
31.0mi
UNLIMITED
36 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
16:02 UTC · Peoria, IL · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
16:02 UTC · Peoria, IL · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Peoria, IL
Satellite · infrared · animated
Peoria, IL
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Peoria, IL
Almanac · Sunday, August 2
Red sky at night, sailor's delight.
Civil dawn
5:26 AM
Sunrise
12:56 AM
Daylight
14h 17m
Sunset
3:13 PM
Civil dusk
8:45 PM
Planting note
Sow fall peas. Start kale and collard seedlings for fall.
Peoria, IL
The moon
Waning Gibbous
84% illuminated
Moonrise
9:42 PM
Moonset
10:04 AM
In sign
♓︎ Pisces
Peoria, IL
Microseason
Aug 1–5

Dusk arrives one minute earlier each night

celestial
Jan 159% of the yearDec 31

Read this microseason across nine climate regions →

Peoria at a glance

  • Today vs. normal: 9°F above the seasonal normal for this latitude
  • Last frost: April 21 (climatological average for this latitude)
  • Microseason: Aug 1–5
  • Planting window: Sow fall peas. Start kale and collard seedlings for fall.

ZIP codes: 61602, 61603, 61604, 61605, 61606, 61607, 61614, 61615 +1 more

16-Day Forecast — Peoria

  1. Sun80°64°1%
  2. Mon86°64°0%
  3. Tue84°64°0%
  4. Wed84°62°54%
  5. Thu83°68°67%
  6. Fri86°65°13%
  7. Sat96°70°20%
  8. Sun98°71°20%
  9. Mon93°68°18%
  10. Tue87°68°20%
  11. Wed97°71°21%
  12. Thu93°71°30%
  13. Fri101°72°35%
  14. Sat87°68°39%
  15. Sun86°63°26%
  16. Mon87°68°26%

Forecast data from Open-Meteo (CC BY 4.0).

Live wind & temperature near Peoria

Right now in the garden

Peak growing season

As of August 2, 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.

Sun & seasons in Peoria

Peoria sits in Peoria County, where the year’s longest day runs 15h 6m of daylight and its shortest just 9h 15m — a swing of +5h 51m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.

Chicago, the state’s largest city, lies about 125 miles to the NE. The nearest town Peoria tracks is Bloomington, roughly 39 miles to the ESE.

Air quality in Peoria’s county has held roughly steady since 2020; its cleanest year on record was 2020 (median AQI 44). See the full air-quality history for Peoria.

January 1–5: Frost quiets the live oaks.January 6–10: Still water thickens with ice.January 11–15: Springs begin to move beneath ice.January 16–20: Cardinal dawn calls grow bolder.January 21–25: Late January thaw pulses.January 26–31: Last freeze locks the land.February 1–5: February's lengthening light.February 6–10: Warming winds thaw the margin.February 11–15: Magnolia blooms break the gray.February 16–20: Mockingbirds resume the dawn chorus.February 21–25: Rain replaces the last snow.February 26–28: Mist clings to greening valleys.March 1–5: The green pulse awakens.March 6–10: Hibernators emerge to call.March 11–15: Dogwood and redbud ignite.March 16–20: Swallowtails emerge from winter silk.March 21–25: Light crowns the dogwood canopy.March 26–31: Redbud cascades over the thaw.April 1–5: Thunder announces the wet season.April 6–10: Barn swallows carve the warming sky.April 11–15: Magnolia blooms and falls in a breath.April 16–20: First rainbows arch over thunderheads.April 21–25: Reeds push through marsh water.April 26–30: Frost retreats; seedlings rise free.May 1–5: Warblers flood the canopy in waves.May 6–10: Tulip poplar lights the forest crown.May 11–15: Shad pulse upstream through rapids.May 16–20: Roses open on the Piedmont edge.May 21–25: Fireflies scout the humid dusk.May 26–31: Frog choruses rise from every wetland.June 1–5: Fireflies pulse through the magnolias.June 6–10: Kudzu climbs deeper into green.June 11–15: Sun climbs to its northern throne.June 16–20: Heat settles and the rain begins.June 21–25: The longest day turns toward shadow.June 26–30: Fireflies drift through Spanish moss.July 1–5: Cicadas claim the scorching afternoon.July 6–10: Thunderheads boil and break at dusk.July 11–15: Thunder builds each drowsy afternoon.July 16–20: Cicadas claim the long noon.July 21–25: Dog days drape the earth in haze.July 26–31: Katydids begin their rasping chorus.August 1–5: Dusk arrives one minute earlier each night.August 6–10: Meteorological summer's turning page.August 11–15: Cool winds gather at the margins.August 16–20: Dog-day cicadas rise.August 21–25: Heat breaks in creek beds.August 26–31: Monarchs gather strength.September 1–5: Harvests begin in earnest.September 6–10: Dew beads on resurrection fern.September 11–15: Raptors trail the thermals.September 16–20: Day and dark find balance.September 21–25: Thunder quiets the land.September 26–30: Insects retreat below.October 1–5: Swamp waters recede.October 6–10: Maples ignite the ridge.October 11–15: Asters crown the meadows.October 16–20: Crickets sing at dusk.October 21–25: Frost paints the garden.October 26–31: Light rains whisper down.November 1–5: Sweetgum Turns Crimson.November 6–10: Camellia Blooms Break Through.November 11–15: Earth Stiffens Underfoot.November 16–20: Bare Limbs Hold the Light.November 21–25: First Frost Grips the High Ground.November 26–30: North Wind Strips the Last Leaves.December 1–5: Darkness Falls Before Dinner.December 6–10: Winter Locks the Land.December 11–15: Wildlife Retreats to Shelter.December 16–20: Ice Edges Deepen Inward.December 21–25: The Sun Begins its Return.December 26–31: The Year Turns in Silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · August 1–5

Dusk arrives one minute earlier each night

Sunset slides back toward 8 PM; darkness creeps in, signaling summer's decline though heat persists.

Day 214 of 365 · Wedge 43 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
February——
March——
Aprillettuce, peas, spinach, radishes—
Maylettuce, peas, spinach, radishes, tomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, peas, radishes
Julytomatoes, peppers, beans, squashtomatoes, beans, summer squash
August—tomatoes, beans, summer squash
Septemberfall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
November——
December——

A year in weather

Peoria's warmest month is July (~76°F mean) and its coldest is January (~26°F). Rainfall peaks in May (4.7 inches) and bottoms out in February (2.0 inches).

MonthMean tempPrecipRainy days
January26°2.1″5
February30°2.0″5
March41°2.7″6
April53°4.0″8
May64°4.7″8
June73°3.7″7
July76°3.5″5
August75°3.3″6
September67°3.5″5
October55°3.2″6
November42°2.7″6
December31°2.2″5

Regional context

Peoria swings from 26°F in January to 76°F in July (51°F) per NOAA NCEI 1991-2020 normals; precipitation in Peoria runs about 37.6 inches on roughly 71 measurable days.

Precipitation in Peoria runs summer-dominant: May averages 4.7 inches across 8.4 days of warm-season storms, while February drops to 2.0 inches over 4.6 rainy days of drier cool air. That puts Peoria in a summer-convective cohort with places like Peoria Heights, IL, West Peoria, IL and Mossville, IL.

Around mid-April, Peoria sheds its freezing nights — kale, peas, spinach, and parsnips go into Peoria's beds. Tomatoes and peppers do best set out two weeks later in Peoria, once nights clear the mid-40s°F. The season ends by mid-November in Peoria, once hard frosts set back in. A creek-bottom lot in Peoria can lag Peoria's last frost 7-10 days behind a south slope.

Similar climates: Peoria Heights, IL, West Peoria, IL, Mossville, IL, Norwood, IL, Bellevue, IL.

Naturalist notes

Late April often brings the first waves of migrating warblers through Peoria's parks and woodlands.

Red oak leaves typically begin their spring emergence in early May as soil temperatures warm consistently.

Frequently asked

When does it freeze in Peoria?
In Peoria, expect the last spring frost near mid-April; Peoria's first autumn frost comes around mid-November.
What is the rainy season in Peoria?
Rainfall in Peoria peaks in May near 4.7 inches, out of about 38 inches annually.
What is the warmest month in Peoria?
Peoria peaks in July, when the mean runs near 76°F.
What is the coldest month in Peoria?
January is Peoria's coldest month, averaging about 26°F.
When can I start a vegetable garden in Peoria?
Around mid-April, start frost-hardy crops in Peoria; tomatoes and basil belong a fortnight later.
How many rainy days does Peoria get?
Peoria averages about 71 days with measurable rain or snow each year.
What hardiness zone is Peoria?
With January around 26°F, Peoria's zone reflects that minimum — the USDA ZIP map confirms Peoria's band.
What is the 10-day forecast for Peoria?
Peoria's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
Will it rain this week in Peoria?
See this week's day-by-day rain chances for Peoria in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Peoria?
Current conditions for Peoria and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Peoria forecast updated?
The Peoria forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Peoria?
Today's sunrise and sunset times for Peoria are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
How accurate is the weather forecast for Peoria?
The next few days in Peoria's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Set in a humid subtropical zone, Peoria, Illinois swings from 26°F in the heart of winter to 76°F at midsummer — a 50°F arc.

Peoria sees close to 38 inches of precipitation annually, falling across some 71 wet days.

Peoria's 50°F range, set by its 40.8°N position, drives frost timing and what thrives in Peoria.

All cities in Illinois →

Chicago, IL weather →

ZIP codes in Peoria

  • 61625
  • 61615
  • 61614
  • 61605
  • 61603
  • 61604
  • 61602
  • 61606
  • 61601
  • 61613
  • 61629
  • 61630
  • 61634
  • 61636
  • 61637
  • 61638
  • 61639
  • 61643
  • 61651
  • 61652
  • 61653
  • 61654
  • 61655
  • 61656

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.