Heat Advisory — Marion, AL, Lamar, AL, Fayette, AL, Walker, AL, Jefferson, AL, Shelby, AL 9:00 PM

Shelby County, Alabama, United States

Last updated: 1:02 AM CDT  ·  Refresh
26°C
Feels like 30°
Mostly Cloudy
▲ 34°  /  ▼ 21°
Wind
5 mph SW
Humidity
86%
Dew Point
23°
Pressure
29.37 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
70%
Sunrise
6:13 AM
Sunset
7:25 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Shelby County is currently mostly cloudy at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2338 J/kg) — isolated convective development possible. Sunrise: 6:13AM · Sunset: 7:25PM.

Alerts

Heat Advisory
Marion, AL, Lamar, AL, Fayette, AL, Walker, AL, Jefferson, AL, Shelby, AL
Expires 9:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
27%
2 AM
25°
25%
3 AM
24°
7%
4 AM
24°
7%
5 AM
22°
9%
6 AM
22°
7%
7 AM
22°
11%
8 AM
24°
11%
9 AM
26°
28%
10 AM
27°
32%
11 AM
29°
36%
12 PM
30°
31%
1 PM
33°
27%
2 PM
33°
31%
3 PM
33°
31%
4 PM
33°
28%
5 PM
34°
28%
6 PM
34°
18%
7 PM
33°
18%
8 PM
32°
18%
9 PM
29°
20%
10 PM
27°
20%
11 PM
26°
11%
12 AM
25°
11%
7-Day Forecast
Today
34° 21°
Mostly Clear with a 32% chance of rain.
Sat
36° 21°
Clear.
Sun
36° 19°
Clear with a 51% chance of rain.
Mon
31° 18°
Clear with a 74% chance of rain.
Tue
35° 19°
Rain, 90% chance.
Wed
37° 23°
Rain, 82% chance.
Thu
33° 19°
Rain, 90% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Cloudy 27% 5 mph SW 86%
2 AM 25° Mostly Cloudy 25% 3 mph W 92%
3 AM 24° Overcast 7% 2 mph NNW 93%
4 AM 24° Overcast 7% 3 mph N 94%
5 AM 22° Mostly Cloudy 9% 2 mph SSE 94%
6 AM 22° Mostly Cloudy 7% 2 mph SSW 94%
7 AM 22° Partly Cloudy 11% 2 mph SW 94%
8 AM 24° Mostly Clear 11% 2 mph SW 86%
9 AM 26° Partly Cloudy 28% 3 mph SW 79%
10 AM 27° Partly Cloudy 32% 4 mph SW 72%
11 AM 29° Clear 36% 3 mph SW 67%
12 PM 30° Mostly Clear 31% 3 mph W 62%
1 PM 33° Mostly Clear 27% 4 mph WSW 57%
2 PM 33° Mostly Clear 31% 4 mph W 56%
3 PM 33° Mostly Clear 31% 4 mph W 56%
4 PM 33° Partly Cloudy 28% 4 mph W 55%
5 PM 34° Mostly Clear 28% 4 mph WNW 58%
6 PM 34° Mostly Clear 18% 4 mph WNW 60%
7 PM 33° Mostly Clear 18% 4 mph WNW 63%
8 PM 32° Mostly Clear 18% 4 mph NW 65%
9 PM 29° Clear 20% 3 mph NW 67%
10 PM 27° Mostly Clear 20% 3 mph NNW 70%
11 PM 26° Mostly Clear 11% 3 mph N 72%
12 AM 25° Mostly Clear 11% 3 mph N 76%
15-Day Forecast
Today
8/21
Mostly Clear
32%
21°
34°
Sat
8/22
Clear
11%
21°
36°
Sun
8/23
Clear
51%
19°
36°
Mon
8/24
Clear
74%
18°
31°
Tue
8/25
Rain
90%
19°
35°
Wed
8/26
Rain
82%
23°
37°
Thu
8/27
Rain
90%
19°
33°
Fri
8/28
Drizzle
43%
19°
37°
Sat
8/29
Drizzle
44%
20°
38°
Sun
8/30
Drizzle
60%
21°
37°
Mon
8/31
Drizzle
60%
22°
37°
Tue
9/1
Drizzle
60%
22°
36°
Wed
9/2
Drizzle
60%
22°
36°
Thu
9/3
Drizzle
60%
21°
36°
Fri
9/4
Drizzle
60%
21°
36°
55
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
55 AQI 11.0 µg/m³
O3
Ground-level ozone
50 AQI 54 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 50 55
Sat 49 Good 48 49
Sun 55 Moderate 42 55
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 Fri Aug 21, 03:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1796 J/kg
MLCAPE1829 J/kg
MUCAPE2078 J/kg
SBCIN-201 J/kg
MLCIN-123 J/kg
Lifted Index-5.6
Kinematics
0–6 km Shear7 kt
0–1 km Shear12 kt
Eff. Shear7 kt
0–1 km SRH48
0–3 km SRH30
Eff. SRH30
Storm Motion320° @ 14 kt
0–1 km EHI0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.4
Thermo & Levels
PWAT1.97 in
0–3 km LR5.2 °C/km
700–500 LR6.6 °C/km
Total Totals51.3
LCL949 hPa
LFC724 hPa
EL168 hPa
Freezing Lvl14,619 ft