EnviroNearby

Meigs County, Tennessee air quality history

Daily Air Quality Index summaries from EPA monitors in Meigs, Tennessee, 2000–2013.

94%
Good days in 2013
39
Median daily AQI, 2013
0
Days above 100 in 2013
233
Days with an AQI in 2013 (of 365)

In 2013, EPA reported a daily Air Quality Index (AQI) for Meigs, Tennessee on 233 days. 218 of those days (94%) were in the Good range, and the median daily AQI was 39. That median is lower than the typical monitored county in Tennessee (median 43 across 19 counties), and lower than the typical monitored U.S. county (42). The main pollutant was ozone on 233 days. Across the years with fuller monitoring, the share of Good days rose: an average of 51% in 2000–2002 versus 75% in 2011–2013.

EPA did not report an AQI for every day of 2013 here (233 of 365 days). Figures describe monitored days only; seasonal monitoring (for example, ozone measured only in warmer months) can make a county look cleaner or dirtier than a full-year record would.

The most recent year with data for this county is 2013; EPA's files for 2014–2025 contain no row for it, which usually means its monitors stopped reporting.

How the days broke down each year

Each bar is one year. The colored segments show the share of monitored days that fell in each AQI category.

Share of monitored days in each AQI category, by year0%25%50%75%100%2000: Good 98 of 229 days2000: Moderate 87 of 229 days2000: Unhealthy for Sensitive Groups 28 of 229 days2000: Unhealthy 16 of 229 days20002001: Good 122 of 242 days2001: Moderate 75 of 242 days2001: Unhealthy for Sensitive Groups 42 of 242 days2001: Unhealthy 3 of 242 days20012002: Good 179 of 303 days2002: Moderate 65 of 303 days2002: Unhealthy for Sensitive Groups 33 of 303 days2002: Unhealthy 25 of 303 days2002: Very Unhealthy 1 of 303 days20022003: Good 206 of 303 days2003: Moderate 76 of 303 days2003: Unhealthy for Sensitive Groups 21 of 303 days20032004: Good 147 of 241 days2004: Moderate 86 of 241 days2004: Unhealthy for Sensitive Groups 7 of 241 days2004: Unhealthy 1 of 241 days20042005: Good 206 of 306 days2005: Moderate 77 of 306 days2005: Unhealthy for Sensitive Groups 23 of 306 days20052006: Good 194 of 299 days2006: Moderate 91 of 299 days2006: Unhealthy for Sensitive Groups 13 of 299 days2006: Unhealthy 1 of 299 days20062007: Good 99 of 239 days2007: Moderate 112 of 239 days2007: Unhealthy for Sensitive Groups 26 of 239 days2007: Unhealthy 2 of 239 days20072008: Good 145 of 230 days2008: Moderate 77 of 230 days2008: Unhealthy for Sensitive Groups 8 of 230 days20082009: Good 186 of 242 days2009: Moderate 54 of 242 days2009: Unhealthy for Sensitive Groups 2 of 242 days20092010: Good 156 of 245 days2010: Moderate 78 of 245 days2010: Unhealthy for Sensitive Groups 11 of 245 days20102011: Good 154 of 239 days2011: Moderate 78 of 239 days2011: Unhealthy for Sensitive Groups 7 of 239 days20112012: Good 166 of 244 days2012: Moderate 69 of 244 days2012: Unhealthy for Sensitive Groups 9 of 244 days20122013: Good 218 of 233 days2013: Moderate 15 of 233 days2013
  • Good
  • Moderate
  • Unhealthy for Sensitive Groups
  • Unhealthy
  • Very Unhealthy
  • Hazardous

Typical and high-end AQI over time

The median is the middle day of the year. The 90th percentile is the level that only the highest 10% of days exceeded.

Median and 90th-percentile daily AQI, by year0501001502000: 90th percentile AQI 1262001: 90th percentile AQI 1152002: 90th percentile AQI 1362003: 90th percentile AQI 932004: 90th percentile AQI 842005: 90th percentile AQI 932006: 90th percentile AQI 872007: 90th percentile AQI 1052008: 90th percentile AQI 842009: 90th percentile AQI 672010: 90th percentile AQI 842011: 90th percentile AQI 772012: 90th percentile AQI 742013: 90th percentile AQI 492000: Median AQI 582001: Median AQI 502002: Median AQI 462003: Median AQI 442004: Median AQI 462005: Median AQI 442006: Median AQI 442007: Median AQI 582008: Median AQI 482009: Median AQI 412010: Median AQI 462011: Median AQI 462012: Median AQI 452013: Median AQI 3920002001200220032004200520062007200820092010201120122013
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 2013

On each monitored day, the AQI reflects whichever measured pollutant had the highest index. This counts how many days each pollutant set the AQI. A pollutant that was not measured here cannot appear.

PollutantDays as main pollutantShare of monitored days
Ozone233100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
20132332181500003949100Ozone
20122441666990004574140Ozone
20112391547870004677126Ozone
201024515678110004684136Ozone
20092421865420004167112Ozone
20082301457780004884129Ozone
2007239991122620058105177Ozone
200629919491131004487154Ozone
200530620677230004493150Ozone
20042411478671004684154Ozone
200330320676210004493147Ozone
20023031796533251046136204Ozone
2001242122754230050115187Ozone
2000229988728160058126197Ozone

What this data can and can’t tell you

It is a county-level summary. EPA reports one AQI per day for the county, based on the monitors operating there. Air at a particular street, school or home can differ, especially near roads, industry or wildfire smoke.

It is not a health assessment. The AQI is EPA’s scale for communicating daily air quality. A county’s history can’t tell you what the health risk is for any particular person. For daily conditions and health guidance, see AirNow.

Rules change over time. EPA has revised AQI breakpoints, most recently for fine particles in 2024, so some year-to-year change can reflect the scale rather than the air.

All monitored counties in Tennessee

Source: U.S. EPA AirData, “Annual AQI by County” files for 2000–2013 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem