Marion, South Dakota Weather
Prairie lightning bugs rise. Day 78 of spring. Read this microseason across nine climate regions →
Marion weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Light Drizzle27%0.02″84°66°—
- SaturdayJun 6Overcast——90°62°+6°
- SundayJun 7Overcast30%—86°67°-4°
- MondayJun 8Light Drizzle24%—86°64°0°
- TuesdayJun 9Thunderstorm24%—96°68°+10°
- WednesdayJun 10Light Drizzle17%—96°75°0°
- ThursdayJun 11Drizzle21%0.08″74°60°-22°
AQI 39 (Good), driven by PM2.5. AQI down 10 over the last 6 hours (steady decline since this morning). PM2.5 at 6.0 µg/m³, PM10 at 6.1 µg/m³ — typical background levels with no transport signature.
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 6.0 µg/m³, PM10 at 6.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.98
- Wind
- light
- Recent rain
- 1h in last 6h
- Pattern
- background
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
- 5:40 AM
- Moonset
- 3:28 PM
- In sign
- ♒︎ Aquarius
Prairie lightning bugs rise
Marion at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: May 7 (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 — Marion
SPC has placed Marion in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3NONENo severe 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.