Jefferson County, Alabama, United States

Last updated: 5:26 PM CDT  ·  Refresh
36°C
Feels like 42°
Mostly Clear
▲ 37°  /  ▼ 23°
Wind
6 mph W
Humidity
48%
Dew Point
22°
Pressure
29.30 inHg
Visibility
10 mi
UV Index
5.3
Cloud Cover
12%
Sunrise
6:11 AM
Sunset
7:31 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently mostly clear at 36°C. Precipitation is likely — peak probability 75% around 7 PM. Atmospheric instability is elevated (CAPE up to 2549 J/kg) — isolated convective development possible. Sunrise: 6:11AM · Sunset: 7:31PM.

Alerts

No active alerts for this location.
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
36°
45%
6 PM
33°
61%
7 PM
31°
75%
8 PM
29°
61%
9 PM
27°
65%
10 PM
27°
64%
11 PM
26°
49%
12 AM
26°
32%
1 AM
26°
12%
2 AM
26°
9%
3 AM
25°
9%
4 AM
24°
16%
5 AM
23°
20%
6 AM
23°
13%
7 AM
24°
3%
8 AM
26°
3%
9 AM
27°
4%
10 AM
28°
7%
11 AM
29°
7%
12 PM
32°
7%
1 PM
34°
7%
2 PM
34°
11%
3 PM
34°
11%
4 PM
34°
12%
7-Day Forecast
Today
37° 23°
Mostly Clear with a 61% chance of rain.
Tue
36° 23°
Mostly Clear with a 20% chance of rain.
Wed
38° 22°
Mostly Clear.
Thu
34° 23°
Mostly Cloudy with a 37% chance of rain.
Fri
36° 22°
Partly Cloudy with a 38% chance of rain.
Sat
34° 21°
Clear with a 33% chance of rain.
Sun
35° 19°
Mostly Clear with a 24% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 36° Mostly Clear 45% 6 mph W 48%
6 PM 33° Mostly Clear 61% 4 mph W 58%
7 PM 31° Partly Cloudy 75% 4 mph WSW 68%
8 PM 29° Mostly Cloudy 61% 4 mph NNW 74%
9 PM 27° Mostly Cloudy 65% 6 mph N 79%
10 PM 27° Partly Cloudy 64% 3 mph NW 82%
11 PM 26° Partly Cloudy 49% 3 mph WNW 84%
12 AM 26° Partly Cloudy 32% 3 mph WNW 86%
1 AM 26° Partly Cloudy 12% 2 mph W 88%
2 AM 26° Partly Cloudy 9% 3 mph W 88%
3 AM 25° Partly Cloudy 9% 3 mph W 89%
4 AM 24° Partly Cloudy 16% 3 mph WNW 89%
5 AM 23° Partly Cloudy 20% 3 mph WNW 90%
6 AM 23° Partly Cloudy 13% 4 mph WNW 91%
7 AM 24° Partly Cloudy 3% 4 mph NW 89%
8 AM 26° Partly Cloudy 3% 4 mph NW 82%
9 AM 27° Partly Cloudy 4% 4 mph NW 75%
10 AM 28° Partly Cloudy 7% 5 mph NW 68%
11 AM 29° Mostly Clear 7% 6 mph NNW 62%
12 PM 32° Mostly Clear 7% 6 mph NNW 56%
1 PM 34° Mostly Clear 7% 6 mph NNW 54%
2 PM 34° Mostly Clear 11% 6 mph NNW 52%
3 PM 34° Mostly Clear 11% 6 mph NW 50%
4 PM 34° Mostly Clear 12% 6 mph NNW 50%
15-Day Forecast
Today
8/17
Mostly Clear
61%
23°
37°
Tue
8/18
Mostly Clear
20%
23°
36°
Wed
8/19
Mostly Clear
18%
22°
38°
Thu
8/20
Mostly Cloudy
37%
23°
34°
Fri
8/21
Partly Cloudy
38%
22°
36°
Sat
8/22
Clear
33%
21°
34°
Sun
8/23
Mostly Clear
24%
19°
35°
Mon
8/24
Mostly Cloudy
60%
22°
34°
Tue
8/25
Drizzle
60%
23°
35°
Wed
8/26
Drizzle
60%
21°
34°
Thu
8/27
Drizzle
54%
21°
33°
Fri
8/28
Clear
25%
23°
34°
Sat
8/29
Drizzle
60%
22°
33°
Sun
8/30
Drizzle
60%
22°
33°
Mon
8/31
Drizzle
60%
22°
33°
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 11.4 µg/m³
O3
Ground-level ozone
31 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 55 Moderate 31 55
Wed 52 Moderate 36 52
Thu 61 Moderate 61 59
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 Mon Aug 17, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2772 J/kg
MLCAPE2051 J/kg
MUCAPE2772 J/kg
SBCIN-34 J/kg
MLCIN-28 J/kg
Lifted Index-5.2
Kinematics
0–6 km Shear7 kt
0–1 km Shear6 kt
Eff. Shear4 kt
0–1 km SRH27
0–3 km SRH46
Eff. SRH46
Storm Motion340° @ 19 kt
0–1 km EHI0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index40.4
Thermo & Levels
PWAT2.08 in
0–3 km LR8.4 °C/km
700–500 LR5.3 °C/km
Total Totals48.4
LCL817 hPa
LFC790 hPa
EL133 hPa
Freezing Lvl16,480 ft