De Smet, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
De Smet weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——85°62°—
- SundayJul 5Overcast——88°65°+3°
- MondayJul 6Light Showers21%—91°66°+3°
- TuesdayJul 7Thunderstorm33%—95°67°+4°
- WednesdayJul 8Showers65%0.05″81°66°-14°
- ThursdayJul 9Drizzle16%0.06″78°60°-3°
- FridayJul 10Partly Cloudy21%—76°59°-2°
AQI 51 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 10.9 µg/m³ (AQI 54) with a 0.77 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 48 now. With UV 5.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 36 around 1 PM.
- Present
- AQI 48
- UV peak
- 5.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 36
PM × Wind × Precip
PM2.5 at 10.9 µg/m³ (AQI 54) with a 0.77 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.77
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:32 PM
- Moonset
- 10:32 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
De Smet at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: May 12 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57231
16-Day Forecast — De Smet
- Sat85°62°9%
- Sun88°65°2%
- Mon91°66°21%
- Tue95°67°33%
- Wed81°66°65%
- Thu78°60°16%
- Fri76°59°21%
- Sat81°58°21%
- Sun86°60°11%
- Mon86°61°6%
- Tue91°64°7%
- Wed97°67°11%
- Thu90°71°12%
- Fri83°62°17%
- Sat79°58°11%
- Sun87°56°19%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — De Smet
SPC has placed De Smet in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in De Smet
- 57231