Heat Advisory — North and Central Sebastian, AR, Southern Crawford, AR, Central and Southern Franklin, AR, Southern Sebastian, AR, Pushmataha, OK, Choctaw, OK, Washington, OK, Nowata, OK, Craig, OK, Ottawa, OK, Tulsa, OK, Rogers, OK, Mayes, OK, Delaware, OK, Creek, OK, Okfuskee, OK, Okmulgee, OK, Wagoner, OK, Cherokee, OK, Adair, OK, Muskogee, OK, McIntosh, OK, Pittsburg, OK, Haskell, OK, Latimer, OK, Northern Sequoyah, OK, Northern Le Flore, OK, Northeast Osage, OK, Central and Southern Sequoyah, OK, Central Le Flore, OK, Southeast Osage, OK, Southern Le Flore, OK 7:00 PM

Fort Smith, Arkansas

Last updated: 8:23 AM CDT  ·  Refresh
28°C
Feels like 30°
Clear
▲ 38°  /  ▼ 24°
Wind
4 mph E
Humidity
68%
Dew Point
22°
Pressure
29.66 inHg
Visibility
10 mi
UV Index
3.8
Cloud Cover
4%
Sunrise
7:00 AM
Sunset
7:22 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Fort Smith is currently clear at 28°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1045 J/kg) — isolated convective development possible. Sunrise: 7:00AM · Sunset: 7:22PM.

Alerts

Heat Advisory
North and Central Sebastian, AR, Southern Crawford, AR, Central and Southern Franklin, AR, Southern Sebastian, AR, Pushmataha, OK, Choctaw, OK, Washington, OK, Nowata, OK, Craig, OK, Ottawa, OK, Tulsa, OK, Rogers, OK, Mayes, OK, Delaware, OK, Creek, OK, Okfuskee, OK, Okmulgee, OK, Wagoner, OK, Cherokee, OK, Adair, OK, Muskogee, OK, McIntosh, OK, Pittsburg, OK, Haskell, OK, Latimer, OK, Northern Sequoyah, OK, Northern Le Flore, OK, Northeast Osage, OK, Central and Southern Sequoyah, OK, Central Le Flore, OK, Southeast Osage, OK, Southern Le Flore, OK
Expires 7:00 PM
43 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
11%
9 AM
29°
14%
10 AM
31°
14%
11 AM
33°
14%
12 PM
35°
14%
1 PM
38°
18%
2 PM
37°
18%
3 PM
37°
18%
4 PM
36°
19%
5 PM
36°
22%
6 PM
34°
18%
7 PM
33°
17%
8 PM
32°
17%
9 PM
29°
3%
10 PM
29°
3%
11 PM
29°
3%
12 AM
28°
3%
1 AM
27°
3%
2 AM
27°
3%
3 AM
26°
3%
4 AM
26°
3%
5 AM
25°
3%
6 AM
24°
3%
7 AM
25°
3%
7-Day Forecast
Today
38° 24°
Partly Cloudy with a 22% chance of rain.
Thu
39° 24°
Mostly Clear.
Fri
38° 23°
Clear.
Sat
38° 22°
Clear with a 32% chance of rain.
Sun
38° 21°
Clear with a 30% chance of rain.
Mon
36° 19°
Clear with a 64% chance of rain.
Tue
36° 18°
Clear with a 31% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 28° Clear 11% 4 mph E 68%
9 AM 29° Clear 14% 3 mph SE 58%
10 AM 31° Clear 14% 2 mph SSE 50%
11 AM 33° Clear 14% 3 mph S 44%
12 PM 35° Mostly Clear 14% 4 mph SSW 39%
1 PM 38° Mostly Clear 18% 5 mph SSW 36%
2 PM 37° Mostly Cloudy 18% 6 mph S 37%
3 PM 37° Mostly Cloudy 18% 6 mph S 39%
4 PM 36° Mostly Cloudy 19% 5 mph S 41%
5 PM 36° Partly Cloudy 22% 4 mph SSE 43%
6 PM 34° Mostly Clear 18% 6 mph SE 48%
7 PM 33° Partly Cloudy 17% 5 mph SE 55%
8 PM 32° Partly Cloudy 17% 4 mph ESE 62%
9 PM 29° Partly Cloudy 3% 4 mph SE 66%
10 PM 29° Mostly Clear 3% 4 mph ESE 64%
11 PM 29° Mostly Clear 3% 4 mph ESE 65%
12 AM 28° Mostly Clear 3% 4 mph E 66%
1 AM 27° Partly Cloudy 3% 4 mph E 68%
2 AM 27° Mostly Clear 3% 4 mph E 70%
3 AM 26° Mostly Clear 3% 4 mph E 71%
4 AM 26° Mostly Clear 3% 4 mph E 72%
5 AM 25° Mostly Clear 3% 4 mph E 73%
6 AM 24° Mostly Clear 3% 3 mph E 74%
7 AM 25° Clear 3% 3 mph E 73%
15-Day Forecast
Today
9/16
Partly Cloudy
22%
24°
38°
Thu
9/17
Mostly Clear
3%
24°
39°
Fri
9/18
Clear
3%
23°
38°
Sat
9/19
Clear
32%
22°
38°
Sun
9/20
Clear
30%
21°
38°
Mon
9/21
Clear
64%
19°
36°
Tue
9/22
Clear
31%
18°
36°
Wed
9/23
Drizzle
43%
19°
36°
Thu
9/24
Clear
43%
17°
35°
Fri
9/25
Clear
19%
19°
36°
Sat
9/26
Clear
25%
19°
34°
Sun
9/27
Drizzle
60%
19°
34°
Mon
9/28
Drizzle
60%
19°
33°
Tue
9/29
Drizzle
60%
18°
32°
Wed
9/30
Drizzle
60%
18°
32°
43
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
28 AQI 5.1 µg/m³
O3
Ground-level ozone
Dominant
43 AQI 46 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 43 Good 43 28
Fri 49 Good 49 47
Sat 44 Good 44 29
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 Sep 16, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE980 J/kg
MLCAPE782 J/kg
MUCAPE1060 J/kg
SBCIN-173 J/kg
MLCIN-144 J/kg
Lifted Index-3.7
Kinematics
0–6 km Shear16 kt
0–1 km Shear15 kt
Eff. Shear17 kt
0–1 km SRH44
0–3 km SRH32
Eff. SRH32
Storm Motion252° @ 17 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index29.6
Thermo & Levels
PWAT1.74 in
0–3 km LR5.7 °C/km
700–500 LR6.1 °C/km
Total Totals46.6
LCL924 hPa
LFC789 hPa
EL188 hPa
Freezing Lvl15,705 ft