# Air Quality Alert: York; Chester — retained record

> Retained us-gov-api record from us-gov-api:noaa-weather.

Canonical: https://highsignal.app/data/records/60a9e2e7cc2858b7

[← sources](https://highsignal.app/data)


source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-07-16 20:06 ingested 2026-07-17 08:17

[original source ↗](http://www.weather.gov/)

## extract

Air Quality Alert — York; Chester
Severity: Unknown. Certainty: Unknown.
The South Carolina Department of Environmental Services (SCDES) has
issued a Code Orange Ground Level Ozone Action Day for the Catawba
region of South Carolina, from 10 AM to 8 PM EDT Friday.

Dominant high pressure will ensure minimal cloud cover and light and
variable winds. Long-range wildfire smoke will also transport ozone
precursors into the area. These factors will allow for sufficient
ozone production, compounding with weak dispersion characteristics
of an already pollutant-loaded atmosphere.

An ozone action day means that atmospheric conditions will likely
produce unhealthy concentrations of ground level ozone air
pollution. A Code Orange forecast indicates that ground level ozone
concentrations are expected to be unhealthy for sensitive groups,
which includes people with lung disease, older adults, and children.
Sensitive groups should reduce prolonged or heavy outdoor exertion,
take more breaks, and do less intense activities, especially during
afternoon and early evening hours. You can help prevent ozone
pollution by walking or riding your bicycle, taking your lunch to
work, reducing idling, conserving energy, and keeping your vehicle
properly tuned. For additional information, please visit the South
Carolina Department of Environmental Services website at
http://www.des.sc.gov/ozone or the Environmental Protection Agency
AirNow website at https://www.airnow.gov.

## retained text

The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.