Isabel, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Isabel weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast11%—86°60°—
- SundayJul 5Mostly Clear——94°64°+8°
- MondayJul 6Light Drizzle22%—95°70°+1°
- TuesdayJul 7Thunderstorm72%0.35″99°66°+4°
- WednesdayJul 8Drizzle72%0.02″79°62°-20°
- ThursdayJul 9Light Drizzle18%0.02″85°63°+6°
- FridayJul 10Overcast18%—87°66°+2°
AQI 59 (Moderate), driven by PM2.5. AQI up 5 over the last 6 hours (gradual rise). PM2.5 at 16.1 µg/m³ (AQI 64) with a 0.80 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 41 now. With UV 6.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 34 around 1 PM.
- Present
- AQI 41
- UV peak
- 6.2 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 34
PM × Wind × Precip
PM2.5 at 16.1 µg/m³ (AQI 64) with a 0.80 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.80
- 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
- 10:49 PM
- Moonset
- 9:47 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Isabel at a glance
- Today vs. normal: 6°F above the seasonal normal for this latitude
- Last frost: May 18 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57633
16-Day Forecast — Isabel
- Sat86°60°11%
- Sun94°64°1%
- Mon95°70°22%
- Tue99°66°72%
- Wed79°62°72%
- Thu85°63°18%
- Fri87°66°18%
- Sat84°62°13%
- Sun89°59°5%
- Mon105°69°6%
- Tue99°75°13%
- Wed87°61°13%
- Thu99°66°23%
- Fri98°66°16%
- Sat100°70°19%
- Sun106°76°20%
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 — Isabel
SPC has placed Isabel 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.
ZIP codes in Isabel
- 57633