Green Valley, South Dakota Weather
Prairie lightning bugs rise. Day 78 of spring. Read this microseason across nine climate regions →
Green Valley weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Drizzle43%0.05″74°55°—
- FridayJun 5Overcast15%—85°57°+11°
- SaturdayJun 6Overcast——98°61°+13°
- SundayJun 7Overcast34%—99°72°+1°
- MondayJun 8Drizzle34%—87°58°-12°
- TuesdayJun 9Overcast12%—98°64°+11°
- WednesdayJun 10Light Drizzle13%0.02″96°69°-2°
PM2.5 at 7.9 µg/m³, PM10 at 10.4 µg/m³ — typical background levels with no transport signature. AQI flat over the last 6 hours (within ±3 points).
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 39 now. With UV 0.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 9 by mid-afternoon.
- Present
- AQI 39
- UV peak
- 0.2 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5 at 7.9 µg/m³, PM10 at 10.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.76
- Wind
- calm
- 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
- 6:05 AM
- Moonset
- 3:52 PM
- In sign
- ♒︎ Aquarius
Prairie lightning bugs rise
Green Valley at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: May 10 (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 — Green Valley
SPC has placed Green Valley in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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.