Selby, South Dakota Weather
Prairie lightning bugs rise. Day 78 of spring. Read this microseason across nine climate regions →
Selby weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Overcast——81°59°—
- SaturdayJun 6Overcast——87°63°+6°
- SundayJun 7Overcast32%—94°71°+7°
- MondayJun 8Overcast32%—82°60°-12°
- TuesdayJun 9Overcast29%—102°67°+20°
- WednesdayJun 10Partly Cloudy29%—87°64°-15°
- ThursdayJun 11Light Drizzle24%0.04″76°55°-11°
AQI 34 (Good), driven by PM2.5. AQI down 12 over the last 6 hours (steady decline since this morning). PM2.5 at 5.3 µg/m³ (AQI 29) with a 0.73 fine-to-coarse ratio and 4 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 5.3 µg/m³ (AQI 29) with a 0.73 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.73
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 5:57 AM
- Moonset
- 3:34 PM
- In sign
- ♒︎ Aquarius
Prairie lightning bugs rise
Selby at a glance
- Today vs. normal: 9°F below the seasonal normal for this latitude
- Last frost: May 19 (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 — Selby
SPC has placed Selby in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- 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.