Brookings, South Dakota

Last updated: 11:14 PM CDT  ·  Refresh
22°C
Feels like 22°
Overcast
▲ 28°  /  ▼ 14°
Wind
11 mph SSE
Humidity
77%
Dew Point
18°
Pressure
28.22 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
91%
Sunrise
6:45 AM
Sunset
8:10 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Brookings is currently overcast at 22°C. Precipitation is likely — peak probability 90% around 2 AM. Atmospheric instability is elevated (CAPE up to 1523 J/kg) — isolated convective development possible. Sunrise: 6:45AM · Sunset: 8:10PM.

Alerts

No active alerts for this location.
39 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
79%
12 AM
21°
75%
1 AM
21°
83%
2 AM
20°
90%
3 AM
20°
87%
4 AM
19°
63%
5 AM
19°
61%
6 AM
17°
40%
7 AM
16°
3%
8 AM
17°
3%
9 AM
18°
3%
10 AM
19°
3%
11 AM
21°
3%
12 PM
23°
3%
1 PM
24°
3%
2 PM
27°
5%
3 PM
28°
5%
4 PM
28°
9%
5 PM
28°
9%
6 PM
28°
9%
7 PM
27°
9%
8 PM
26°
15%
9 PM
24°
16%
10 PM
23°
16%
7-Day Forecast
Tonight
28° 14°
Overcast with a 79% chance of rain.
Sat
30° 16°
Partly Cloudy with a 90% chance of rain.
Sun
35° 16°
Mostly Clear.
Mon
33° 17°
Partly Cloudy with a 58% chance of rain.
Tue
30° 14°
Rain, 64% chance.
Wed
34° 11°
Rain, 42% chance.
Thu
36° 17°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 22° Overcast 79% 11 mph SSE 77%
12 AM 21° Overcast 75% 9 mph SSE 85%
1 AM 21° Rain 83% 9 mph SSE 94%
2 AM 20° Heavy Rain 90% 12 mph SSE 93%
3 AM 20° Heavy Rain 87% 16 mph SSE 92%
4 AM 19° Overcast 63% 18 mph SSE 92%
5 AM 19° Overcast 61% 19 mph SSE 91%
6 AM 17° Mostly Cloudy 40% 18 mph SSE 91%
7 AM 16° Mostly Cloudy 3% 16 mph SSE 90%
8 AM 17° Partly Cloudy 3% 14 mph S 85%
9 AM 18° Partly Cloudy 3% 13 mph S 79%
10 AM 19° Partly Cloudy 3% 11 mph S 74%
11 AM 21° Partly Cloudy 3% 8 mph S 67%
12 PM 23° Partly Cloudy 3% 6 mph S 60%
1 PM 24° Mostly Cloudy 3% 5 mph S 54%
2 PM 27° Partly Cloudy 5% 4 mph S 52%
3 PM 28° Mostly Clear 5% 3 mph SSE 50%
4 PM 28° Clear 9% 3 mph SE 49%
5 PM 28° Clear 9% 3 mph ESE 52%
6 PM 28° Clear 9% 3 mph ESE 54%
7 PM 27° Mostly Clear 9% 4 mph E 57%
8 PM 26° Mostly Clear 15% 4 mph E 61%
9 PM 24° Mostly Clear 16% 4 mph ENE 64%
10 PM 23° Mostly Clear 16% 6 mph ENE 68%
15-Day Forecast
Today
8/28
Overcast
79%
14°
28°
Sat
8/29
Partly Cloudy
90%
16°
30°
Sun
8/30
Mostly Clear
15%
16°
35°
Mon
8/31
Partly Cloudy
58%
17°
33°
Tue
9/1
Rain
64%
14°
30°
Wed
9/2
Rain
42%
11°
34°
Thu
9/3
Clear
17%
17°
36°
Fri
9/4
Rain
27%
18°
36°
Sat
9/5
Clear
44%
16°
32°
Sun
9/6
Drizzle
44%
16°
31°
Mon
9/7
Clear
25%
17°
37°
Tue
9/8
Drizzle
60%
16°
37°
Wed
9/9
Drizzle
60%
16°
29°
Thu
9/10
Clear
25%
16°
29°
Fri
9/11
Drizzle
60%
14°
28°
39
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
39 AQI 7.1 µg/m³
O3
Ground-level ozone
Dominant
39 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 39 Good 39 39
Sun 46 Good 33 46
Mon 47 Good 30 47
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 Sat Aug 29, 03:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE370 J/kg
MLCAPE456 J/kg
MUCAPE658 J/kg
SBCIN-463 J/kg
MLCIN-388 J/kg
Lifted Index-2.6
Kinematics
0–6 km Shear36 kt
0–1 km Shear23 kt
Eff. Shear38 kt
0–1 km SRH198
0–3 km SRH312
Eff. SRH120
Storm Motion292° @ 12 kt
0–1 km EHI0.5
Composite Parameters
Sig. Tornado0.3
STP (eff)0.0
Supercell1.6
K-Index34.1
Thermo & Levels
PWAT1.62 in
0–3 km LR4.6 °C/km
700–500 LR7.4 °C/km
Total Totals51.0
LCL901 hPa
LFC620 hPa
EL254 hPa
Freezing Lvl13,133 ft