Flood Warning — Brookings County, SD, Hamlin County, SD Flood Warning — Brookings County, SD Heat Advisory — Beadle, SD, Kingsbury, SD, Brookings, SD, Gregory, SD, Jerauld, SD, Sanborn, SD, Miner, SD, Lake, SD, Moody, SD, Brule, SD, Aurora, SD, Davison, SD, Hanson, SD, McCook, SD, Minnehaha, SD, Charles Mix, SD, Douglas, SD, Hutchinson, SD, Turner, SD, Lincoln, SD, Bon Homme, SD, Yankton, SD, Clay, SD, Union, SD 9:00 PM

Brookings County, South Dakota, United States

Last updated: 7:32 PM CDT  ·  Refresh
33°C
Feels like 34°
Mostly Clear
▲ 36°  /  ▼ 17°
Wind
6 mph SW
Humidity
36%
Dew Point
18°
Pressure
28.13 inHg
Visibility
10 mi
UV Index
3.6
Cloud Cover
16%
Sunrise
5:58 AM
Sunset
9:07 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Brookings County is currently mostly clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1866 J/kg) — isolated convective development possible. Sunrise: 5:58AM · Sunset: 9:07PM.

Alerts

Flood Warning
Brookings County, SD, Hamlin County, SD
Expires
Flood Warning
Brookings County, SD
Expires
Heat Advisory
Beadle, SD, Kingsbury, SD, Brookings, SD, Gregory, SD, Jerauld, SD, Sanborn, SD, Miner, SD, Lake, SD, Moody, SD, Brule, SD, Aurora, SD, Davison, SD, Hanson, SD, McCook, SD, Minnehaha, SD, Charles Mix, SD, Douglas, SD, Hutchinson, SD, Turner, SD, Lincoln, SD, Bon Homme, SD, Yankton, SD, Clay, SD, Union, SD
Expires 9:00 PM
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
29%
8 PM
32°
27%
9 PM
29°
19%
10 PM
28°
16%
11 PM
26°
3%
12 AM
24°
3%
1 AM
23°
3%
2 AM
23°
3%
3 AM
22°
3%
4 AM
21°
3%
5 AM
18°
3%
6 AM
17°
3%
7 AM
18°
3%
8 AM
20°
3%
9 AM
22°
3%
10 AM
23°
3%
11 AM
25°
3%
12 PM
26°
3%
1 PM
29°
3%
2 PM
29°
3%
3 PM
30°
3%
4 PM
30°
3%
5 PM
31°
3%
6 PM
30°
3%
7-Day Forecast
Tonight
36° 17°
Mostly Clear with a 29% chance of rain.
Sat
32° 17°
Mostly Clear.
Sun
33° 17°
Partly Cloudy.
Mon
37° 19°
Mostly Clear with a 36% chance of rain.
Tue
27° 13°
Clear.
Wed
28° 11°
Clear.
Thu
28° 13°
Rain, 28% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Mostly Clear 29% 6 mph SW 36%
8 PM 32° Partly Cloudy 27% 5 mph N 44%
9 PM 29° Mostly Clear 19% 9 mph NNE 53%
10 PM 28° Mostly Clear 16% 11 mph NE 59%
11 PM 26° Clear 3% 10 mph NE 63%
12 AM 24° Mostly Clear 3% 9 mph NE 67%
1 AM 23° Mostly Clear 3% 9 mph NE 70%
2 AM 23° Mostly Clear 3% 9 mph NE 72%
3 AM 22° Mostly Clear 3% 8 mph NE 74%
4 AM 21° Partly Cloudy 3% 8 mph NE 75%
5 AM 18° Partly Cloudy 3% 8 mph NE 76%
6 AM 17° Partly Cloudy 3% 9 mph NE 77%
7 AM 18° Partly Cloudy 3% 9 mph NE 73%
8 AM 20° Partly Cloudy 3% 10 mph ENE 64%
9 AM 22° Mostly Clear 3% 11 mph ENE 55%
10 AM 23° Clear 3% 11 mph ENE 46%
11 AM 25° Mostly Clear 3% 10 mph ENE 40%
12 PM 26° Mostly Clear 3% 10 mph NE 34%
1 PM 29° Mostly Clear 3% 10 mph NE 30%
2 PM 29° Mostly Clear 3% 10 mph NE 28%
3 PM 30° Mostly Clear 3% 10 mph NE 27%
4 PM 30° Mostly Clear 3% 10 mph ENE 27%
5 PM 31° Mostly Clear 3% 10 mph ENE 29%
6 PM 30° Mostly Clear 3% 10 mph ENE 30%
15-Day Forecast
Today
7/17
Mostly Clear
29%
17°
36°
Sat
7/18
Mostly Clear
3%
17°
32°
Sun
7/19
Partly Cloudy
14%
17°
33°
Mon
7/20
Mostly Clear
36%
19°
37°
Tue
7/21
Clear
3%
13°
27°
Wed
7/22
Clear
8%
11°
28°
Thu
7/23
Rain
28%
13°
28°
Fri
7/24
Rain
28%
14°
27°
Sat
7/25
Drizzle
44%
13°
30°
Sun
7/26
Rain
68%
15°
30°
Mon
7/27
Drizzle
60%
14°
31°
Tue
7/28
Drizzle
60%
19°
33°
Wed
7/29
Drizzle
60%
18°
32°
Thu
7/30
Drizzle
60%
18°
32°
Fri
7/31
Drizzle
60%
18°
31°
51
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
51 AQI 9.1 µg/m³
O3
Ground-level ozone
47 AQI 52 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 51 Moderate 47 51
Sun 40 Good 40 35
Mon 45 Good 38 45
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 Jul 17, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1257 J/kg
MLCAPE2000 J/kg
MUCAPE2726 J/kg
SBCIN-65 J/kg
MLCIN0 J/kg
Lifted Index-3.5
Kinematics
0–6 km Shear15 kt
0–1 km Shear6 kt
Eff. Shear17 kt
0–1 km SRH-10
0–3 km SRH-23
Eff. SRH-23
Storm Motion263° @ 22 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index42.8
Thermo & Levels
PWAT1.73 in
0–3 km LR8.4 °C/km
700–500 LR5.7 °C/km
Total Totals51.4
LCL760 hPa
LFC728 hPa
EL182 hPa
Freezing Lvl14,646 ft