Armour, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Armour weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——87°67°—
- SundayJul 5Clear——89°68°+2°
- MondayJul 6Overcast12%—95°68°+6°
- TuesdayJul 7Overcast30%—98°70°+3°
- WednesdayJul 8Heavy Drizzle58%—80°69°-18°
- ThursdayJul 9Light Showers18%0.27″90°64°+10°
- FridayJul 10Overcast18%—81°62°-9°
AQI 56 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 19.0 µg/m³ (AQI 69) with a 0.68 fine-to-coarse ratio and 5 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 47 now. With UV 7.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 32 around 1 PM.
- Present
- AQI 47
- UV peak
- 7.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 32
PM × Wind × Precip
PM2.5 at 19.0 µg/m³ (AQI 69) with a 0.68 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.68
- 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
- 11:34 PM
- Moonset
- 10:37 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Armour at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: May 6 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57313
16-Day Forecast — Armour
- Sat87°67°9%
- Sun89°68°2%
- Mon95°68°12%
- Tue98°70°30%
- Wed80°69°58%
- Thu90°64°18%
- Fri81°62°18%
- Sat82°58°13%
- Sun86°64°9%
- Mon86°64°4%
- Tue94°65°6%
- Wed100°72°9%
- Thu89°74°17%
- Fri86°65°24%
- Sat83°61°15%
- Sun86°58°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 — Armour
SPC has placed Armour 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 Armour
- 57313