Air quality in United States
Air quality in South Carolina today
Updated
Good: average US AQI 40 across 9 cities in South Carolina Worst now: Myrtle Beach (47); cleanest: Anderson, SC (33).
Live US AQI, PM2.5 and ozone for cities across South Carolina, compared with the United States average.
- Average US AQI
- 40 Good
- United States average
- 48 747 cities
- Most polluted now
- Myrtle Beach AQI 47
- Cleanest now
- Anderson, SC AQI 33
- Cities above 100
- 0
Air quality in South Carolina today
Right now the modelled air quality in South Carolina averages a US AQI of 40 (Good) across the 9 cities we track. By category: 9 Good (of 9).
That is 8 points cleaner than the United States average of 48, ranking 25 of 51 states from cleanest to most polluted.
Myrtle Beach has the worst air at 47 (PM2.5 12 µg/m³), and Anderson, SC the cleanest at 33. No tracked city is above 100, so no group needs to change plans.
South Carolina cities by AQI (most polluted first)
| City | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Myrtle Beach | 47 | Good | 11.5 | 18 | 90 |
| Charleston | 46 | Good | 10.7 | 16 | 88 |
| North Charleston | 46 | Good | 10.7 | 16 | 88 |
| Columbia | 40 | Good | 7.9 | 12 | 87 |
| Lexington | 40 | Good | 7.9 | 12 | 87 |
| Aiken | 37 | Good | 8.1 | 12 | 87 |
| Florence | 35 | Good | 7 | 11 | 85 |
| Greenville | 33 | Good | 8.1 | 12 | 88 |
| Anderson | 33 | Good | 8.2 | 12 | 87 |
What the US AQI numbers mean
| US AQI | Category | What it means |
|---|---|---|
| 0-50 | Good | Air quality is satisfactory and poses little or no risk; a good time for outdoor activity. |
| 51-100 | Moderate | Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. |
| 101-150 | Unhealthy for Sensitive Groups | People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. |
| 151-200 | Unhealthy | Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. |
| 201-300 | Very Unhealthy | Health alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors. |
| 301-500 | Hazardous | Emergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500. |
Modelled by CAMS (Copernicus) via Open-Meteo, refreshed twice a day; read hour by hour from the forecast.
Cities in South Carolina
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Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS).