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

Fort Smith, Arkansas

Last updated: 1:52 AM CDT  ·  Refresh
28°C
Feels like 31°
Clear
▲ 38°  /  ▼ 22°
Wind
3 mph SE
Humidity
63%
Dew Point
20°
Pressure
29.44 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
0%
Sunrise
6:51 AM
Sunset
7:41 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 763 J/kg) — isolated convective development possible. Sunrise: 6:51AM · Sunset: 7:41PM.

Alerts

Heat Advisory
North and Central Sebastian, AR, Southern Crawford, AR, Central and Southern Franklin, AR, Southern Sebastian, AR, Washington, OK, Nowata, OK, Craig, OK, Ottawa, OK, Tulsa, OK, Rogers, OK, Mayes, OK, Okmulgee, OK, Wagoner, OK, Muskogee, OK, McIntosh, OK, Haskell, OK, Northern Le Flore, OK, Northeast Osage, OK, Central and Southern Sequoyah, OK, Central Le Flore, OK, Southeast Osage, OK
Expires 7:00 PM
38 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
5%
2 AM
27°
5%
3 AM
27°
3%
4 AM
26°
3%
5 AM
23°
3%
6 AM
22°
3%
7 AM
24°
3%
8 AM
26°
3%
9 AM
29°
3%
10 AM
31°
3%
11 AM
33°
3%
12 PM
34°
3%
1 PM
36°
3%
2 PM
37°
3%
3 PM
37°
3%
4 PM
37°
3%
5 PM
38°
3%
6 PM
37°
3%
7 PM
36°
3%
8 PM
34°
3%
9 PM
32°
3%
10 PM
31°
3%
11 PM
30°
3%
12 AM
29°
3%
7-Day Forecast
Today
38° 22°
Clear.
Fri
40° 22°
Clear.
Sat
41° 22°
Clear.
Sun
41° 23°
Clear.
Mon
42° 23°
Clear.
Tue
41° 22°
Clear.
Wed
40° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 28° Clear 5% 3 mph SE 63%
2 AM 27° Clear 5% 4 mph SE 68%
3 AM 27° Clear 3% 4 mph ESE 70%
4 AM 26° Clear 3% 3 mph ESE 72%
5 AM 23° Clear 3% 3 mph ESE 75%
6 AM 22° Clear 3% 4 mph ESE 77%
7 AM 24° Clear 3% 4 mph SE 72%
8 AM 26° Clear 3% 5 mph SSE 65%
9 AM 29° Clear 3% 7 mph SSE 58%
10 AM 31° Clear 3% 8 mph S 52%
11 AM 33° Clear 3% 9 mph S 47%
12 PM 34° Mostly Clear 3% 9 mph S 42%
1 PM 36° Mostly Clear 3% 10 mph S 39%
2 PM 37° Mostly Clear 3% 9 mph S 37%
3 PM 37° Clear 3% 10 mph SSE 35%
4 PM 37° Mostly Clear 3% 10 mph SSE 36%
5 PM 38° Mostly Clear 3% 10 mph SSE 38%
6 PM 37° Mostly Clear 3% 9 mph SSE 40%
7 PM 36° Mostly Clear 3% 8 mph SSE 44%
8 PM 34° Mostly Clear 3% 7 mph SSE 49%
9 PM 32° Clear 3% 6 mph SSE 53%
10 PM 31° Clear 3% 6 mph SSE 56%
11 PM 30° Clear 3% 5 mph SSE 59%
12 AM 29° Clear 3% 5 mph SSE 62%
15-Day Forecast
Today
9/3
Clear
5%
22°
38°
Fri
9/4
Clear
16%
22°
40°
Sat
9/5
Clear
3%
22°
41°
Sun
9/6
Clear
7%
23°
41°
Mon
9/7
Clear
3%
23°
42°
Tue
9/8
Clear
8%
22°
41°
Wed
9/9
Clear
17%
23°
40°
Thu
9/10
Drizzle
43%
22°
38°
Fri
9/11
Drizzle
44%
21°
38°
Sat
9/12
Rain
64%
21°
37°
Sun
9/13
Drizzle
60%
22°
36°
Mon
9/14
Drizzle
60%
22°
37°
Tue
9/15
Drizzle
60%
22°
37°
Wed
9/16
Drizzle
60%
21°
35°
Thu
9/17
Drizzle
60%
21°
34°
38
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
23 AQI 4.1 µg/m³
O3
Ground-level ozone
Dominant
38 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 38 Good 38 23
Fri 41 Good 41 27
Sat 43 Good 43 28
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 Thu Sep 3, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE140 J/kg
MLCAPE674 J/kg
MUCAPE994 J/kg
SBCIN-373 J/kg
MLCIN-98 J/kg
Lifted Index-0.5
Kinematics
0–6 km Shear10 kt
0–1 km Shear17 kt
Eff. Shear8 kt
0–1 km SRH31
0–3 km SRH12
Eff. SRH-16
Storm Motion202° @ 21 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.3
Thermo & Levels
PWAT1.79 in
0–3 km LR5.7 °C/km
700–500 LR5.7 °C/km
Total Totals45.2
LCL884 hPa
LFC522 hPa
EL303 hPa
Freezing Lvl16,699 ft