Today | Weather | Tuesday, June 9, 2026
Active Weather Warnings

Weather in Sioux Falls, South Dakota

05:46 PM
Now
Cloudy Weather
90° F
Feels Like 90°
Precipitation 7 %
Wind 16 mph
UV Index (0 - 11+) 2
Humidity 52 %
Today
Cloudy Weather
Day 93°
Night 70°
Precipitation 25 %
Wind 16 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Sioux Falls Weather Forecast Updated

30 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (June 9, 2025)
Cloudy Weather

Day

68°

Night

50°

Wind

15 mph

UV Index

4

Precipitation

3 %

Air Quality in Sioux Falls

NOW
35 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.45 µg/m³
PM10 5.33 µg/m³
O3 0.038 ppm
NO2 0.3 ppb
SO2 0.1 ppb
CO 0.10 ppm
NH3 1.96 µg/m³
NO 0.09 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.53.45 µg/m³
PM105.33 µg/m³
O374.19 µg/m³
NO20.61 µg/m³
SO20.27 µg/m³
CO112.94 µg/m³
NH31.96 µg/m³
NO0.09 µg/m³

Weather Alerts and Warnings for Sioux Falls

Moderate Expected Likely

Heat Advisory

Heat Advisory issued June 9 at 12:32PM CDT until June 9 at 9:00PM CDT by NWS Sioux Falls SD
Jun 9, 1:00 PM Jun 9, 9:00 PM
WHAT: Heat index values up to 105 expected, hottest south of
Highway 18.

WHERE: Portions of northwest and west central Iowa, northeast
Nebraska, and south central and southeast South Dakota.

WHEN: Until 9 PM CDT this evening.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Updated: Jun 9, 5:16 PM Source: NWS Alert