Lancaster, South Carolina Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Lancaster weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Clear——84°52°—
- FridayJun 5Overcast——89°60°+5°
- SaturdayJun 6Overcast——88°63°-1°
- SundayJun 7Overcast——91°65°+3°
- MondayJun 8Heavy Showers38%1.6″94°68°+3°
- TuesdayJun 9Overcast18%—77°61°-17°
- WednesdayJun 10Overcast13%—82°67°+5°
PM2.5 at 6.4 µg/m³ (AQI 36) with a 0.98 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust. AQI down 32 over the last 6 hours — air quality is improving sharply.
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 33 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 15 by mid-afternoon.
- Present
- AQI 33
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 15
PM × Wind × Precip
PM2.5 at 6.4 µg/m³ (AQI 36) with a 0.98 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.98
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:35 AM
- Moonset
- 1:38 PM
- In sign
- ♑︎ Capricorn
Fireflies pulse through the magnolias
Lancaster at a glance
- Today vs. normal: 24°F below the seasonal normal for this latitude
- Last frost: March 15 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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.