Bad Air Days in Cherokee County, South Carolina

Not enough data

EPA monitors in Cherokee County ran on too few days between 2016 and 2025 to give a fair yearly count (about 47% of days covered). Neighbouring counties below are a better guide.

What actually helps here

EPA monitors here ran too few days to give a fair yearly count. Use AirNow for today's air.

The record for Cherokee

The worst recent year was 2016, with 1 bad day on 172 monitored days.

Date	AQI	Main pollutant
2016-04-20	101	Ozone
2016-06-14	100	Ozone
2016-06-10	87	Ozone
2016-05-25	84	Ozone
2016-04-18	80	Ozone

Most days, not the worst ones

Across 172 monitored days from 2016 to 2016, the air in Cherokee County rated Good on 86% of them, more often than the 72% typical of monitored counties, and Moderate on 13%. The median day sat at AQI 41; one day in ten went above 54.

The pollutant setting the AQI on an ordinary day here:

ozone100%172 days

Cherokee County by year

Year	Days monitored	Good	Moderate	Over 100	Over 150	Median AQI	Highest AQI
2016	172	148	23	1	0	41	101
2015	318	276	42	0	0	37	87
2014	223	179	43	1	0	42	105
2013	242	209	32	1	0	40	101
2012	195	127	62	6	0	47	122
2011	259	182	69	8	1	46	159
2010	342	270	68	4	0	40	126

Elsewhere in South Carolina

How this is counted

A bad air day is a day the county's daily AQI from EPA AirData went above 100, the level where EPA tells children, older adults and people with asthma or heart disease to cut back outdoors. Monitors do not run every day, so yearly counts are scaled to 365 days. This is the record, not today's air: for that, check AirNow. More on the method in how the county numbers are made, on the AQI 100 line in what counts as a bad air day, and on why a purifier does not touch ozone in smoke vs ozone.