South Carolina air quality today

Every South Carolina metro we track

Sun over South Carolina today

The strongest UV in South Carolina today is 7.8 (Very High) in Charleston, arriving around 2pm local time. The mildest of the 2 metros we model here peaks at 7.8 in Columbia.

UV is modelled, not measured — unlike the AQI above it, which comes off an instrument. Hour by hour in Charleston →

What stands behind these South Carolina numbers

2 of the 2 metros here report from a named regulatory monitor — Charleston, Columbia. The dominant pollutant across South Carolina today is PM2.5.

We track 2 metropolitan areas in South Carolina, not the whole state, and none of them has its own page yet — a metro page ships only after thirty days of our own history, and that clock is running. There is no state-wide average here on purpose: averaging 2 metros into one figure would invent a value for all the ground between them. How we measure, and what we refuse to estimate →

Neighbouring states

Smoke and inversions do not stop at a state line, so when South Carolina looks wrong the answer is often next door.