Alexander County, Illinois, United States

Last updated: 9:59 PM CDT  ·  Refresh
27°C
Feels like 30°
Mostly Clear
▲ 35°  /  ▼ 20°
Wind
6 mph N
Humidity
79%
Dew Point
23°
Pressure
29.43 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
14%
Sunrise
5:53 AM
Sunset
8:13 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Alexander County is currently mostly clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 837 J/kg) — isolated convective development possible. Sunrise: 5:53AM · Sunset: 8:13PM.

Alerts

No active alerts for this location.
49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
3%
10 PM
26°
14%
11 PM
25°
14%
12 AM
24°
3%
1 AM
23°
3%
2 AM
22°
3%
3 AM
21°
3%
4 AM
20°
3%
5 AM
20°
3%
6 AM
20°
3%
7 AM
22°
3%
8 AM
23°
3%
9 AM
24°
3%
10 AM
26°
3%
11 AM
26°
3%
12 PM
28°
3%
1 PM
28°
3%
2 PM
28°
3%
3 PM
28°
3%
4 PM
28°
3%
5 PM
28°
3%
6 PM
27°
3%
7 PM
27°
3%
8 PM
24°
3%
7-Day Forecast
Tonight
35° 20°
Mostly Clear.
Wed
30° 18°
Mostly Clear.
Thu
27° 17°
Clear.
Fri
24° 17°
Mostly Cloudy with a 44% chance of rain.
Sat
30° 18°
Clear with a 45% chance of rain.
Sun
34° 23°
Clear.
Mon
34° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Clear 3% 6 mph N 79%
10 PM 26° Clear 14% 6 mph N 85%
11 PM 25° Clear 14% 6 mph N 85%
12 AM 24° Clear 3% 7 mph N 84%
1 AM 23° Clear 3% 7 mph N 85%
2 AM 22° Clear 3% 7 mph N 87%
3 AM 21° Clear 3% 6 mph N 88%
4 AM 20° Clear 3% 6 mph N 88%
5 AM 20° Clear 3% 6 mph N 88%
6 AM 20° Clear 3% 6 mph N 88%
7 AM 22° Clear 3% 7 mph N 83%
8 AM 23° Clear 3% 8 mph N 79%
9 AM 24° Mostly Clear 3% 8 mph N 75%
10 AM 26° Partly Cloudy 3% 8 mph N 71%
11 AM 26° Mostly Clear 3% 9 mph N 66%
12 PM 28° Partly Cloudy 3% 10 mph N 63%
1 PM 28° Partly Cloudy 3% 10 mph NNE 62%
2 PM 28° Partly Cloudy 3% 10 mph NNE 62%
3 PM 28° Partly Cloudy 3% 10 mph NNE 62%
4 PM 28° Partly Cloudy 3% 10 mph NNE 65%
5 PM 28° Partly Cloudy 3% 9 mph NNE 67%
6 PM 27° Partly Cloudy 3% 9 mph NNE 70%
7 PM 27° Partly Cloudy 3% 9 mph NNE 71%
8 PM 24° Mostly Clear 3% 9 mph NNE 72%
15-Day Forecast
Today
7/21
Mostly Clear
3%
20°
35°
Wed
7/22
Mostly Clear
3%
18°
30°
Thu
7/23
Clear
3%
17°
27°
Fri
7/24
Mostly Cloudy
44%
17°
24°
Sat
7/25
Clear
45%
18°
30°
Sun
7/26
Clear
17%
23°
34°
Mon
7/27
Clear
17%
23°
34°
Tue
7/28
Rain
18%
20°
32°
Wed
7/29
Drizzle
44%
18°
30°
Thu
7/30
Drizzle
44%
16°
29°
Fri
7/31
Drizzle
60%
17°
29°
Sat
8/1
Clear
60%
19°
30°
Sun
8/2
Clear
60%
20°
31°
Mon
8/3
Drizzle
60%
20°
31°
Tue
8/4
Drizzle
60%
21°
31°
49
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
PM2.5
Fine particulate matter
Dominant
49 AQI 8.8 µg/m³
O3
Ground-level ozone
32 AQI 36 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 49 Good 32 49
Thu 28 Good 28 26
Fri 31 Good 31 16
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. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Wed Jul 22, 01:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE877 J/kg
MLCAPE184 J/kg
MUCAPE877 J/kg
SBCIN-203 J/kg
MLCIN0 J/kg
Lifted Index-0.7
Kinematics
0–6 km Shear40 kt
0–1 km Shear11 kt
Eff. Shear43 kt
0–1 km SRH-99
0–3 km SRH-102
Eff. SRH-102
Storm Motion284° @ 29 kt
0–1 km EHI-0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index4.6
Thermo & Levels
PWAT1.43 in
0–3 km LR4.7 °C/km
700–500 LR5.4 °C/km
Total Totals39.0
LCL941 hPa
LFC637 hPa
EL167 hPa
Freezing Lvl17,949 ft