Pierre, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Pierre weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast24%—90°61°—
- SundayJul 5Clear——92°66°+2°
- MondayJul 6Showers51%0.12″105°69°+13°
- TuesdayJul 7Light Showers72%0.17″103°69°-2°
- WednesdayJul 8Light Drizzle72%0.01″82°67°-21°
- ThursdayJul 9Light Drizzle17%—86°66°+4°
- FridayJul 10Clear17%—84°64°-2°
AQI 58 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 19.2 µg/m³ (AQI 70) with a 0.74 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 45 now. With UV 7.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 47 around 1 PM.
- Present
- AQI 45
- UV peak
- 7.9 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 47
PM × Wind × Precip
PM2.5 at 19.2 µg/m³ (AQI 70) with a 0.74 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.74
- 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
- 11:43 PM
- Moonset
- 10:44 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Pierre at a glance
- Today vs. normal: 17°F above the seasonal normal for this latitude
- Last frost: May 12 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57501
16-Day Forecast — Pierre
- Sat90°61°24%
- Sun92°66°1%
- Mon105°69°51%
- Tue103°69°72%
- Wed82°67°72%
- Thu86°66°17%
- Fri84°64°17%
- Sat84°60°14%
- Sun92°64°6%
- Mon93°69°8%
- Tue102°70°14%
- Wed109°74°14%
- Thu93°76°23%
- Fri88°70°16%
- Sat87°63°24%
- Sun90°63°32%
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 — Pierre
SPC includes Pierre 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 Pierre
- 57501