Lee County, Illinois, United States

Last updated: 8:18 PM CDT · Refresh

23°C

Feels like 26°

Partly Cloudy

▲ 26° / ▼ 18°

Wind

3 mph NE

Humidity

92%

Dew Point

21°

Pressure

29.10 inHg

Visibility

10 mi

UV Index

0.6

Cloud Cover

42%

Sunrise

5:27 AM

Sunset

8:35 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Lee County is currently partly cloudy at 23°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1339 J/kg) — isolated convective development possible. Sunrise: 5:27AM · Sunset: 8:35PM.

48 AQI · Good Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

23°

31%

9 PM

21°

26%

10 PM

21°

27%

11 PM

20°

39%

12 AM

20°

22%

1 AM

20°

2 AM

19°

20%

3 AM

19°

20%

4 AM

19°

20%

5 AM

18°

20%

6 AM

18°

11%

7 AM

19°

22%

8 AM

19°

24%

9 AM

21°

24%

10 AM

22°

42%

11 AM

23°

42%

12 PM

23°

43%

1 PM

24°

43%

2 PM

24°

43%

3 PM

26°

44%

4 PM

26°

24%

5 PM

27°

24%

6 PM

26°

20%

7 PM

26°

14%

7-Day Forecast

Tonight

26° 18°

Partly Cloudy with a 39% chance of rain.

Sun

27° 17°

Partly Cloudy with a 43% chance of rain.

Mon

27° 15°

Clear.

Tue

27° 14°

Mostly Clear.

Wed

26° 17°

Rain, 72% chance.

Thu

22° 17°

Rain, 90% chance.

Fri

24° 16°

Rain, 64% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 23° Partly Cloudy 31% 3 mph NE 92%

9 PM 21° Partly Cloudy 26% 4 mph ENE 95%

10 PM 21° Partly Cloudy 27% 5 mph E 96%

11 PM 20° Mostly Cloudy 39% 4 mph ENE 96%

12 AM 20° Overcast 22% 4 mph N 97%

1 AM 20° Overcast 8% 5 mph N 98%

2 AM 19° Overcast 20% 5 mph N 98%

3 AM 19° Overcast 20% 4 mph N 97%

4 AM 19° Overcast 20% 5 mph N 97%

5 AM 18° Overcast 20% 5 mph N 96%

6 AM 18° Mostly Cloudy 11% 5 mph NNE 95%

7 AM 19° Mostly Cloudy 22% 6 mph NNE 94%

8 AM 19° Mostly Cloudy 24% 6 mph N 92%

9 AM 21° Mostly Cloudy 24% 7 mph N 90%

10 AM 22° Mostly Cloudy 42% 8 mph N 88%

11 AM 23° Mostly Cloudy 42% 8 mph NNE 86%

12 PM 23° Mostly Cloudy 43% 9 mph NNE 84%

1 PM 24° Mostly Cloudy 43% 9 mph NNE 82%

2 PM 24° Mostly Cloudy 43% 10 mph NNE 81%

3 PM 26° Mostly Cloudy 44% 10 mph NE 80%

4 PM 26° Mostly Cloudy 24% 10 mph NE 80%

5 PM 27° Partly Cloudy 24% 10 mph NE 81%

6 PM 26° Partly Cloudy 20% 10 mph NE 82%

7 PM 26° Partly Cloudy 14% 10 mph NE 84%

15-Day Forecast

Today

7/4

Partly Cloudy

39%

18°

26°

Sun

7/5

Partly Cloudy

43%

17°

27°

Mon

7/6

Clear

15°

27°

Tue

7/7

Mostly Clear

14°

27°

Wed

7/8

Rain

72%

17°

26°

Thu

7/9

Rain

90%

17°

22°

Fri

7/10

Rain

64%

16°

24°

Sat

7/11

Clear

53%

15°

23°

Sun

7/12

Drizzle

43%

12°

25°

Mon

7/13

Clear

19%

13°

24°

Tue

7/14

Clear

25%

18°

28°

Wed

7/15

Drizzle

60%

18°

26°

Thu

7/16

Drizzle

60%

18°

25°

Fri

7/17

Drizzle

60%

18°

25°

Sat

7/18

Drizzle

60%

18°

26°

Good

U.S. Air Quality Index · Dominant: PM2.5

50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today

PM_2.5

Fine particulate matter

Dominant

48 AQI 8.6 µg/m³

O₃

Ground-level ozone

35 AQI 38 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 48 Good 35 48

Mon 51 Moderate 35 51

Tue 53 Moderate 35 53

About the Air Quality Index

0–50 Good

51–100 Moderate

101–150 Unhealthy for Sensitive Groups

151–200 Unhealthy

201–300 Very Unhealthy

301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM_2.5 (fine particles) is reported in µg/m³ and ozone (O₃) in ppb. Forecast source: NWS NAQFC.

Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio

RAP

Valid Sat Jul 4, 23:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE464 J/kg

MLCAPE425 J/kg

MUCAPE683 J/kg

SBCIN-5 J/kg

MLCIN0 J/kg

Lifted Index-1.8

Kinematics

0–6 km Shear20 kt

0–1 km Shear8 kt

Eff. Shear21 kt

0–1 km SRH3

0–3 km SRH-16

Eff. SRH-16

Storm Motion186° @ 6 kt

0–1 km EHI0.0

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index28.5

Thermo & Levels

PWAT1.69 in

0–3 km LR5.3 °C/km

700–500 LR5.3 °C/km

Total Totals43.7

LCL962 hPa

LFC926 hPa

EL283 hPa

Freezing Lvl13,907 ft

Lee County, Illinois, United States

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