Whitehorse, South Dakota Weather
Prairie lightning bugs rise. Day 78 of spring. Read this microseason across nine climate regions →
Whitehorse weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Overcast——84°56°—
- SaturdayJun 6Overcast——92°63°+8°
- SundayJun 7Overcast38%—97°72°+5°
- MondayJun 8Overcast38%—83°58°-14°
- TuesdayJun 9Overcast25%—100°70°+17°
- WednesdayJun 10Overcast25%—85°66°-15°
- ThursdayJun 11Light Drizzle25%0.02″77°56°-8°
AQI 34 (Good), driven by PM2.5. AQI down 11 over the last 6 hours (steady decline since this morning). PM2.5 at 5.7 µg/m³ (AQI 32) with a 0.76 fine-to-coarse ratio and 5 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
PM × Wind × Precip
PM2.5 at 5.7 µg/m³ (AQI 32) with a 0.76 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.76
- Wind
- light
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 5:59 AM
- Moonset
- 3:39 PM
- In sign
- ♒︎ Aquarius
Prairie lightning bugs rise
Whitehorse at a glance
- Today vs. normal: 11°F below the seasonal normal for this latitude
- Last frost: May 18 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 5, 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 — Whitehorse
SPC has placed Whitehorse in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3MRGLMarginal Risk
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.