Mount Pleasant, South Carolina Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Mount Pleasant weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Foggy——83°58°—
- FridayJun 5Overcast——86°61°+3°
- SaturdayJun 6Overcast——83°66°-3°
- SundayJun 7Overcast——85°70°+2°
- MondayJun 8Overcast——87°71°+2°
- TuesdayJun 9Overcast17%—78°71°-9°
- WednesdayJun 10Overcast16%—78°70°0°
Ozone at AQI 86 now. AQI up 5 over the last 6 hours (gradual rise). With UV 8.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 96 by mid-afternoon.
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 86 now. With UV 8.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 96 by mid-afternoon.
- Present
- AQI 86
- UV peak
- 8.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 96
PM × Wind × Precip
PM2.5 at 5.9 µg/m³ (AQI 33) with a 0.76 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.76
- 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
- 3:26 AM
- Moonset
- 1:39 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Mount Pleasant at a glance
- Today vs. normal: 81°F — typical for the season
- Last frost: March 4 (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.