Ideal, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Ideal weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast20%—91°62°—
- SundayJul 5Clear——93°66°+2°
- MondayJul 6Overcast23%—101°71°+8°
- TuesdayJul 7Showers48%0.14″101°69°0°
- WednesdayJul 8Drizzle56%0.02″83°69°-18°
- ThursdayJul 9Drizzle22%—86°66°+3°
- FridayJul 10Mostly Clear22%—85°64°-1°
AQI 66 (Moderate), driven by PM2.5. AQI up 7 over the last 6 hours (gradual rise). PM2.5 at 24.7 µg/m³ (AQI 80) with a 0.76 fine-to-coarse ratio and 6 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 8.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 47 around 1 PM.
- Present
- AQI 44
- UV peak
- 8.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 47
PM × Wind × Precip
PM2.5 at 24.7 µg/m³ (AQI 80) with a 0.76 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.76
- Wind
- light
- 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
- 11:41 PM
- Moonset
- 10:43 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Ideal at a glance
- Today vs. normal: 19°F above the seasonal normal for this latitude
- Last frost: May 7 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57541
16-Day Forecast — Ideal
- Sat91°62°20%
- Sun93°66°4%
- Mon101°71°23%
- Tue101°69°48%
- Wed83°69°56%
- Thu86°66°22%
- Fri85°64°22%
- Sat86°60°12%
- Sun93°65°8%
- Mon94°67°6%
- Tue101°67°13%
- Wed107°76°16%
- Thu93°77°10%
- Fri92°68°17%
- Sat86°62°25%
- Sun90°61°29%
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 — Ideal
SPC includes Ideal in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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 Ideal
- 57541