Hermosa, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Hermosa weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle—0.01″86°60°—
- SundayJul 5Clear——96°65°+10°
- MondayJul 6Light Drizzle21%—96°72°0°
- TuesdayJul 7Showers68%0.12″98°66°+2°
- WednesdayJul 8Drizzle68%0.01″82°64°-16°
- ThursdayJul 9Light Drizzle38%—86°66°+4°
- FridayJul 10Clear21%—85°61°-1°
AQI 70 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 20.0 µg/m³, PM10 at 25.3 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
Ozone × UV × Sky
Ozone at AQI 53 now. With UV 6.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 48 around 1 PM.
- Present
- AQI 53
- UV peak
- 6.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 48
PM × Wind × Precip
PM2.5 at 20.0 µg/m³, PM10 at 25.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.79
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:54 PM
- Moonset
- 9:57 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Hermosa at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: May 9 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57744
16-Day Forecast — Hermosa
- Sat86°60°5%
- Sun96°65°1%
- Mon96°72°21%
- Tue98°66°68%
- Wed82°64°68%
- Thu86°66°38%
- Fri85°61°21%
- Sat90°59°7%
- Sun97°65°3%
- Mon99°71°8%
- Tue103°74°17%
- Wed103°79°22%
- Thu91°72°28%
- Fri90°65°29%
- Sat86°58°27%
- Sun91°62°26%
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 — Hermosa
SPC has placed Hermosa 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 Hermosa
- 57744