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Now · 6:03 AM

Washington Weather & Hourly Forecast

United States · Illinois · 61571

Mostly clear night
75°F
Mostly clear night
Feels like: 77°F
💧 Humidity 92% 🌡 Pressure 29.91 inHg 💨 Wind 4 mph 👁 Visibility 6.2 mi Clouds 12% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:28 AM 🌇 Sunset 7:24 PM

Hourly Forecast for Washington

Today
Mostly sunny · 7:00 AM Mostly sunny
75° 💧 None 💨 4 mph H 92%29.91 inHg
Sunny · 10:00 AM Sunny
82° 💧 None 💨 8 mph H 70%29.91 inHg
Sunny · 1:00 PM Sunny
92° 💧 None 💨 8 mph H 50%29.91 inHg
Sunny · 4:00 PM Sunny
92° 💧 None 💨 11 mph H 54%29.88 inHg
Sunny · 7:00 PM Sunny
80° 💧 None 💨 12 mph H 75%29.91 inHg
Clear night · 10:00 PM Clear night
70° 💧 None 💨 11 mph H 84%29.94 inHg
Tomorrow
Clear night · 1:00 AM Clear night
64° 💧 None 💨 8 mph H 94%30.00 inHg
Clear night · 4:00 AM Clear night
63° 💧 None 💨 6 mph H 97%30.00 inHg
Sunny · 7:00 AM Sunny
66° 💧 None 💨 7 mph H 95%30.03 inHg
Sunny · 10:00 AM Sunny
77° 💧 None 💨 10 mph H 58%30.06 inHg
Mostly sunny · 1:00 PM Mostly sunny
82° 💧 None 💨 11 mph H 46%30.06 inHg
Overcast · 4:00 PM Overcast
84° 💧 None 💨 12 mph H 46%30.00 inHg
Mostly cloudy · 7:00 PM Mostly cloudy
75° 💧 None 💨 9 mph H 60%30.03 inHg
Mostly cloudy night · 10:00 PM Mostly cloudy night
65° 💧 None 💨 8 mph H 80%30.06 inHg
Monday
Mostly cloudy night · 1:00 AM Mostly cloudy night
62° 💧 None 💨 7 mph H 86%30.09 inHg
Mostly cloudy night · 4:00 AM Mostly cloudy night
59° 💧 None 💨 6 mph H 90%30.12 inHg

In Washington and, more broadly, across the state of Illinois: This evening, skies will feature a mix of sun and clouds, with temperatures remaining quite hot, ranging from 91 to 94 degrees Fahrenheit. Winds will be moderate from the northeast at around 10 mph, with gusts reaching up to 14 mph. No precipitation is expected during this time, providing dry conditions through the night. Temperatures are likely to stay warm as the evening progresses, making for a warm night ahead. Overall, expect a quiet evening with comfortable wind activity but no significant weather disturbances.

15-Day Weather Outlook for Washington

TomorrowTomorrow Mostly sunny Mostly sunny 85°/63° 💧 None 💨 12 mph
Monday, Sep 7Mon Sep 7 Partly cloudy Partly cloudy 83°/59° 💧 None 💨 12 mph
Tuesday, Sep 8Tue Sep 8 Sunny Sunny 96°/61° 💧 None 💨 13 mph
Wednesday, Sep 9Wed Sep 9 Light rain Light rain 88°/70° 💧 0.10 in 💨 13 mph
Thursday, Sep 10Thu Sep 10 Moderate rain Moderate rain 66°/58° 💧 0.22 in 💨 11 mph
Friday, Sep 11Fri Sep 11 Overcast Overcast 77°/56° 💧 None 💨 10 mph
Saturday, Sep 12Sat Sep 12 Sunny Sunny 85°/56° 💧 None 💨 11 mph
Sunday, Sep 13Sun Sep 13 Light rain Light rain 89°/67° 💧 0.03 in 💨 14 mph
Monday, Sep 14Mon Sep 14 Sunny Sunny 73°/53° 💧 None 💨 12 mph
Tuesday, Sep 15Tue Sep 15 Sunny Sunny 75°/47° 💧 None 💨 9 mph
Wednesday, Sep 16Wed Sep 16 Light rain Light rain 83°/54° 💧 0.10 in 💨 11 mph
Thursday, Sep 17Thu Sep 17 Moderate rain Moderate rain 93°/65° 💧 0.72 in 💨 15 mph
Friday, Sep 18Fri Sep 18 Sunny Sunny 101°/74° 💧 None 💨 10 mph
Saturday, Sep 19Sat Sep 19 Partly cloudy Partly cloudy 98°/76° 💧 None 💨 16 mph
Sunday, Sep 20Sun Sep 20 Light rain Light rain 79°/64° 💧 0.02 in 💨 13 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Washington

Vertical axis: °F · Color based on temperature
Mostly sunny at 7:00 AM
75° Today 7:00 AM
Mostly sunny at 8:00 AM
77° 8:00 AM
Sunny at 9:00 AM
79° 9:00 AM
Sunny at 10:00 AM
82° 10:00 AM
Sunny at 11:00 AM
86° Today 11:00 AM
Sunny at 12:00 PM
90° 12:00 PM
Sunny at 1:00 PM
92° 1:00 PM
Sunny at 2:00 PM
93° 2:00 PM
Sunny at 3:00 PM
92° Today 3:00 PM
Sunny at 4:00 PM
92° 4:00 PM
Sunny at 5:00 PM
89° 5:00 PM
Sunny at 6:00 PM
85° 6:00 PM
Sunny at 7:00 PM
80° Today 7:00 PM
Clear night at 8:00 PM
74° 8:00 PM
Clear night at 9:00 PM
71° 9:00 PM
Clear night at 10:00 PM
70° 10:00 PM
Clear night at 11:00 PM
69° Today 11:00 PM
Clear night at 12:00 AM
66° 12:00 AM
Clear night at 1:00 AM
64° 1:00 AM
Clear night at 2:00 AM
63° 2:00 AM
Clear night at 3:00 AM
64° Tomorrow 3:00 AM
Clear night at 4:00 AM
63° 4:00 AM
Clear night at 5:00 AM
63° 5:00 AM
Clear night at 6:00 AM
64° 6:00 AM
Sunny at 7:00 AM
66° Tomorrow 7:00 AM
Sunny at 8:00 AM
71° 8:00 AM
Sunny at 9:00 AM
75° 9:00 AM
Sunny at 10:00 AM
77° 10:00 AM
Sunny at 11:00 AM
79° Tomorrow 11:00 AM
Mostly sunny at 12:00 PM
81° 12:00 PM
Mostly sunny at 1:00 PM
82° 1:00 PM
Overcast at 2:00 PM
85° 2:00 PM
Overcast at 3:00 PM
84° Tomorrow 3:00 PM
Overcast at 4:00 PM
84° 4:00 PM
Overcast at 5:00 PM
83° 5:00 PM
Mostly cloudy at 6:00 PM
80° 6:00 PM
Mostly cloudy at 7:00 PM
75° Tomorrow 7:00 PM
Partly cloudy night at 8:00 PM
69° 8:00 PM
Mostly cloudy night at 9:00 PM
67° 9:00 PM
Mostly cloudy night at 10:00 PM
65° 10:00 PM
Mostly cloudy night at 11:00 PM
64° Tomorrow 11:00 PM
Mostly cloudy night at 12:00 AM
62° 12:00 AM
Mostly cloudy night at 1:00 AM
62° 1:00 AM
Overcast night at 2:00 AM
61° 2:00 AM
Overcast night at 3:00 AM
61° Monday 3:00 AM
Mostly cloudy night at 4:00 AM
59° 4:00 AM
Mostly cloudy night at 5:00 AM
59° 5:00 AM
Mostly cloudy night at 6:00 AM
59° 6:00 AM
Mostly cloudy at 7:00 AM
60° Monday 7:00 AM
Mostly cloudy at 8:00 AM
65° 8:00 AM
Partly cloudy at 9:00 AM
70° 9:00 AM
Partly cloudy at 10:00 AM
74° 10:00 AM
Partly cloudy at 11:00 AM
77° Monday 11:00 AM
Partly cloudy at 12:00 PM
79° 12:00 PM
Partly cloudy at 1:00 PM
81° 1:00 PM
Mostly sunny at 2:00 PM
82° 2:00 PM
Mostly sunny at 3:00 PM
83° Monday 3:00 PM
Partly cloudy at 4:00 PM
82° 4:00 PM
Partly cloudy at 5:00 PM
81° 5:00 PM
Mostly sunny at 6:00 PM
79° 6:00 PM
Mostly sunny at 7:00 PM
73° Monday 7:00 PM
Mostly clear night at 8:00 PM
69° 8:00 PM
Clear night at 9:00 PM
67° 9:00 PM
Clear night at 10:00 PM
66° 10:00 PM
Partly cloudy night at 11:00 PM
65° Monday 11:00 PM
Partly cloudy night at 12:00 AM
63° 12:00 AM
Partly cloudy night at 1:00 AM
62° 1:00 AM
Mostly cloudy night at 2:00 AM
62° 2:00 AM
Mostly cloudy night at 3:00 AM
62° Tuesday 3:00 AM
Overcast night at 4:00 AM
61° 4:00 AM
Overcast night at 5:00 AM
61° 5:00 AM
Mostly cloudy night at 6:00 AM
61° 6:00 AM
Mostly cloudy at 7:00 AM
62° Tuesday 7:00 AM
Sunny at 8:00 AM
67° 8:00 AM
Sunny at 9:00 AM
73° 9:00 AM
Sunny at 10:00 AM
78° 10:00 AM
Sunny at 11:00 AM
83° Tuesday 11:00 AM
Sunny at 12:00 PM
87° 12:00 PM
Sunny at 1:00 PM
91° 1:00 PM
Sunny at 2:00 PM
93° 2:00 PM
Sunny at 3:00 PM
95° Tuesday 3:00 PM
Sunny at 4:00 PM
96° 4:00 PM
Sunny at 5:00 PM
96° 5:00 PM
Sunny at 6:00 PM
93° 6:00 PM
Sunny at 7:00 PM
86° Tuesday 7:00 PM
Partly cloudy night at 8:00 PM
84° 8:00 PM
Partly cloudy night at 9:00 PM
85° 9:00 PM
Mostly clear night at 10:00 PM
84° 10:00 PM
Mostly clear night at 11:00 PM
83° Tuesday 11:00 PM
Mostly clear night at 12:00 AM
83° 12:00 AM
Clear night at 1:00 AM
82° 1:00 AM
Clear night at 2:00 AM
80° 2:00 AM
Light rain at 3:00 AM
77° Wednesday 3:00 AM
Light rain at 4:00 AM
77° 4:00 AM
Light rain at 5:00 AM
72° 5:00 AM
Moderate rain at 6:00 AM
70° 6:00 AM

AIR QUALITY FORECAST

Air Quality Forecast for Washington

Hourly forecast · Updated every 2 hours
Good
Nearest forecast value 7:00 AM
PM2.5 Fine particles Good 4,2µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 5,2µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 11,4µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 8,1µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Washington

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.
0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme
Today UV 7,3High 😊Good
Tomorrow UV 7,6High 🙂Fair
Monday UV 7,7High 😐Moderate
Tuesday UV 7,5High 😐Moderate
Wednesday UV 8,0Very high 🙂Fair
Thursday UV 7,0High Unavailable
Friday UV 6,0High Unavailable
Hourly UV index today
7:00 AMUV 0,0 8:00 AMUV 0,6 9:00 AMUV 1,8 10:00 AMUV 3,6 11:00 AMUV 5,4 12:00 PMUV 6,9 1:00 PMUV 7,3 2:00 PMUV 6,7 3:00 PMUV 5,2 4:00 PMUV 3,4 5:00 PMUV 1,6 6:00 PMUV 0,5
Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Washington

Vertical axis: mph · Horizontal axis: hours
Hourly wind speed Chart of sustained wind and maximum gusts in mph. Today 7:00 AM 8:00 AM 9:00 AM 10:00 AM Today 11:00 AM 12:00 PM 1:00 PM 2:00 PM Today 3:00 PM 4:00 PM 5:00 PM 6:00 PM Today 7:00 PM 8:00 PM 9:00 PM 10:00 PM Today 11:00 PM 12:00 AM 1:00 AM 2:00 AM Tomorrow 3:00 AM 4:00 AM 5:00 AM 6:00 AM Tomorrow 7:00 AM 8:00 AM 9:00 AM 10:00 AM Tomorrow 11:00 AM 12:00 PM 1:00 PM 2:00 PM Tomorrow 3:00 PM 4:00 PM 5:00 PM 6:00 PM Tomorrow 7:00 PM 8:00 PM 9:00 PM 10:00 PM Tomorrow 11:00 PM 12:00 AM 1:00 AM 2:00 AM Monday 3:00 AM 4:00 AM 5:00 AM 6:00 AM Monday 7:00 AM 8:00 AM 9:00 AM 10:00 AM Monday 11:00 AM 12:00 PM 1:00 PM 2:00 PM Monday 3:00 PM 4:00 PM 5:00 PM 6:00 PM Monday 7:00 PM 8:00 PM 9:00 PM 10:00 PM Monday 11:00 PM 12:00 AM 1:00 AM 2:00 AM Tuesday 3:00 AM 4:00 AM 5:00 AM 6:00 AM Tuesday 7:00 AM 8:00 AM 9:00 AM 10:00 AM Tuesday 11:00 AM 12:00 PM 1:00 PM 2:00 PM Tuesday 3:00 PM 4:00 PM 5:00 PM 6:00 PM Tuesday 7:00 PM 8:00 PM 9:00 PM 10:00 PM Tuesday 11:00 PM 12:00 AM 1:00 AM 2:00 AM Wednesday 3:00 AM 4:00 AM 5:00 AM 6:00 AM
Sustained wind Max gusts
NIGHT SKY · WASHINGTON, ILLINOIS

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 11:00 PM–12:00 AM.

99/100Best-hour score
BEST TIME TONIGHT 11:00 PM–12:00 AM Astronomical darkness: 8:58 PM–4:54 AM
Cloud cover 1% Real hourly forecast for the best viewing hour.
Moonlight 32% Last Quarter · Moon below the horizon at the best viewing hour.
Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 23° high at the best hour.
Estimated visible meteors 0–2/hour Local estimate after weather, moonlight and radiant-height adjustments.
Chance ≥1 meteor in 30 min48%
UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.
AUG 28–SEP 5
AurigidsStart AUG 28 · Peak SEP 1 · End SEP 5 · ZHR 6 · 80% Moon at peak
ACTIVE NOW
SEP 5–SEP 21
September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak
ACTIVE NOW
SEP 20–NOV 20
Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak
UPCOMING
OCT 2–NOV 7
OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak
UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

Forecast data for Washington were last refreshed today at 6:03 AM. The current forecast period extends through 07/09/2026 at 4:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.