Vermillion, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Vermillion weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Foggy15%—90°70°—
- SundayJul 5Heavy Showers—0.36″90°70°0°
- MondayJul 6Overcast——92°68°+2°
- TuesdayJul 7Light Drizzle16%—95°71°+3°
- WednesdayJul 8Showers49%—90°69°-5°
- ThursdayJul 9Heavy Drizzle49%0.09″87°64°-3°
- FridayJul 10Overcast11%—84°63°-3°
AQI 50 (Good), driven by PM2.5. AQI up 5 over the last 6 hours (gradual rise). PM2.5 at 10.5 µg/m³ (AQI 54) with a 0.76 fine-to-coarse ratio and 3 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 44 now. With UV 6.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 38 around 1 PM.
- Present
- AQI 44
- UV peak
- 6.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 38
PM × Wind × Precip
PM2.5 at 10.5 µg/m³ (AQI 54) with a 0.76 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.76
- 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
- 11:27 PM
- Moonset
- 10:31 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Vermillion at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: May 3 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57069
16-Day Forecast — Vermillion
- Sat90°70°15%
- Sun90°70°8%
- Mon92°68°2%
- Tue95°71°16%
- Wed90°69°49%
- Thu87°64°49%
- Fri84°63°11%
- Sat84°59°11%
- Sun83°63°7%
- Mon88°62°6%
- Tue89°64°6%
- Wed94°68°12%
- Thu97°67°13%
- Fri93°63°19%
- Sat83°61°19%
- Sun88°58°23%
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 — Vermillion
SPC has placed Vermillion 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 Vermillion
- 57069