Today | Weather | Monday, June 29, 2026

Active Weather Warnings

Severe Thunderstorm Watch

Weather in Watertown, South Dakota

08:57 PM

Now

79° F

Feels Like 79°

Precipitation 6 %

Wind 14 mph

UV Index (0 - 11+) 0

Humidity 69 %

Today

Day 93°

Night 61°

Precipitation 55 %

Wind 16 mph

UV Index (0 - 11+) 3

Watertown Weather Forecast Updated

Air Quality in Watertown

NOW

25 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 2.43 µg/m³

PM₁₀ 2.59 µg/m³

O₃ 0.027 ppm

NO₂ 0.6 ppb

SO₂ 0 ppb

CO 0.10 ppm

NH₃ 2.25 µg/m³

NO 0.01 µg/m³

PM_2.5 – 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)

PM_2.5 – 2.43 µg/m³

PM₁₀ – 2.59 µg/m³

O₃ – 53.6 µg/m³

NO₂ – 1.22 µg/m³

SO₂ – 0.02 µg/m³

CO – 118.85 µg/m³

NH₃ – 2.25 µg/m³

NO – 0.01 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Watertown

Severe Future Possible

Severe Thunderstorm Watch

Severe Thunderstorm Watch issued June 29 at 6:33PM CDT until June 30 at 12:00AM CDT by NWS Aberdeen SD

Jun 29, 6:33 PM → Jun 30, 12:00 AM

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
417 IN EFFECT UNTIL MIDNIGHT CDT TONIGHT FOR THE FOLLOWING AREAS

IN MINNESOTA THIS WATCH INCLUDES 2 COUNTIES

IN WEST CENTRAL MINNESOTA

BIG STONE TRAVERSE

IN SOUTH DAKOTA THIS WATCH INCLUDES 4 COUNTIES

IN NORTHEAST SOUTH DAKOTA

CODINGTON DEUEL GRANT
HAMLIN

THIS INCLUDES THE CITIES OF CLEAR LAKE, HAYTI, MILBANK,
ORTONVILLE, WATERTOWN, AND WHEATON.

Updated: Jun 29, 7:22 PM Source: NWS Alert