Duncan, South Carolina Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Duncan weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Light Rain20%0.06″94°73°—
- MondayJul 6Overcast41%—95°74°+1°
- TuesdayJul 7Light Drizzle27%—97°70°+2°
- WednesdayJul 8Light Drizzle14%—99°70°+2°
- ThursdayJul 9Light Drizzle12%—100°71°+1°
- FridayJul 10Overcast17%—102°73°+2°
- SaturdayJul 11Overcast39%—100°74°-2°
AQI 53 (Moderate), driven by PM2.5. AQI down 6 over the last 6 hours (gradual decline). PM2.5 at 11.4 µg/m³ (AQI 55) with a 0.97 fine-to-coarse ratio and 4 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 34. Overcast through the UV peak window (cloud cover ~75%) — afternoon ozone should stay flat.
- Present
- AQI 34
- UV peak
- 2.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
PM × Wind × Precip
PM2.5 at 11.4 µg/m³ (AQI 55) with a 0.97 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.97
- 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
- 11:43 PM
- Moonset
- 11:41 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Duncan at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: March 17 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 29334
16-Day Forecast — Duncan
- Sun94°73°20%
- Mon95°74°41%
- Tue97°70°27%
- Wed99°70°14%
- Thu100°71°12%
- Fri102°73°17%
- Sat100°74°39%
- Sun98°76°33%
- Mon99°71°23%
- Tue103°72°15%
- Wed105°68°13%
- Thu96°68°25%
- Fri89°68°31%
- Sat99°69°42%
- Sun99°73°26%
- Mon92°78°39%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Duncan
SPC has placed Duncan in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- 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 Duncan
- 29334
- 29651