EnviroNearby

Lawrence County, Tennessee air quality history

Daily Air Quality Index summaries from EPA monitors in Lawrence, Tennessee, 1997–2025.

81%
Good days in 2025
33
Median daily AQI, 2025
0
Days above 100 in 2025
356
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Lawrence, Tennessee on 356 days. 290 of those days (81%) were in the Good range, and the median daily AQI was 33. That median is lower than the typical monitored county in Tennessee (median 39 across 23 counties), and lower than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 356 days. Across the years with fuller monitoring, the share of Good days rose: an average of 48% in 1997–1999 versus 75% in 2023–2025.

Years with fewer than 120 monitored days (2010, 2012, 2013, 2014, 2015, 2016…) are shown in the table but left out of comparisons and trend statements.

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%1997: Good 128 of 217 days1997: Moderate 71 of 217 days1997: Unhealthy for Sensitive Groups 17 of 217 days1997: Unhealthy 1 of 217 days19971998: Good 127 of 234 days1998: Moderate 71 of 234 days1998: Unhealthy for Sensitive Groups 31 of 234 days1998: Unhealthy 5 of 234 days1999: Good 80 of 270 days1999: Moderate 114 of 270 days1999: Unhealthy for Sensitive Groups 55 of 270 days1999: Unhealthy 19 of 270 days1999: Very Unhealthy 2 of 270 days2000: Good 110 of 281 days2000: Moderate 135 of 281 days2000: Unhealthy for Sensitive Groups 35 of 281 days2000: Unhealthy 1 of 281 days2001: Good 145 of 278 days2001: Moderate 123 of 278 days2001: Unhealthy for Sensitive Groups 8 of 278 days2001: Unhealthy 2 of 278 days2002: Good 164 of 284 days2002: Moderate 101 of 284 days2002: Unhealthy for Sensitive Groups 18 of 284 days2002: Unhealthy 1 of 284 days20022003: Good 149 of 278 days2003: Moderate 120 of 278 days2003: Unhealthy for Sensitive Groups 8 of 278 days2003: Unhealthy 1 of 278 days2004: Good 166 of 281 days2004: Moderate 110 of 281 days2004: Unhealthy for Sensitive Groups 5 of 281 days2005: Good 41 of 118 days2005: Moderate 74 of 118 days2005: Unhealthy for Sensitive Groups 3 of 118 days2006: Good 166 of 284 days2006: Moderate 114 of 284 days2006: Unhealthy for Sensitive Groups 4 of 284 days2007: Good 111 of 277 days2007: Moderate 138 of 277 days2007: Unhealthy for Sensitive Groups 28 of 277 days20072008: Good 18 of 57 days2008: Moderate 39 of 57 days2009: Good 27 of 61 days2009: Moderate 34 of 61 days2010: Good 23 of 58 days2010: Moderate 35 of 58 days2011: Good 168 of 254 days2011: Moderate 84 of 254 days2011: Unhealthy for Sensitive Groups 2 of 254 days2012: Good 31 of 59 days2012: Moderate 28 of 59 days20122013: Good 68 of 110 days2013: Moderate 42 of 110 days2014: Good 73 of 113 days2014: Moderate 40 of 113 days2015: Good 77 of 110 days2015: Moderate 33 of 110 days2016: Good 98 of 116 days2016: Moderate 18 of 116 days2017: Good 193 of 234 days2017: Moderate 41 of 234 days20172018: Good 276 of 352 days2018: Moderate 76 of 352 days2019: Good 244 of 330 days2019: Moderate 86 of 330 days2020: Good 325 of 359 days2020: Moderate 34 of 359 days2021: Good 274 of 357 days2021: Moderate 83 of 357 days2022: Good 306 of 351 days2022: Moderate 45 of 351 days20222023: Good 246 of 359 days2023: Moderate 113 of 359 days2024: Good 272 of 360 days2024: Moderate 88 of 360 days2025: Good 290 of 356 days2025: Moderate 66 of 356 days2025
  • 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 year0501001501997: 90th percentile AQI 971998: 90th percentile AQI 1121999: 90th percentile AQI 1502000: 90th percentile AQI 1052001: 90th percentile AQI 842002: 90th percentile AQI 842003: 90th percentile AQI 772004: 90th percentile AQI 742005: 90th percentile AQI 762006: 90th percentile AQI 742007: 90th percentile AQI 1012008: 90th percentile AQI 692009: 90th percentile AQI 612010: 90th percentile AQI 642011: 90th percentile AQI 672012: 90th percentile AQI 602013: 90th percentile AQI 602014: 90th percentile AQI 602015: 90th percentile AQI 552016: 90th percentile AQI 552017: 90th percentile AQI 542018: 90th percentile AQI 552019: 90th percentile AQI 552020: 90th percentile AQI 492021: 90th percentile AQI 572022: 90th percentile AQI 532023: 90th percentile AQI 602024: 90th percentile AQI 552025: 90th percentile AQI 531997: Median AQI 461998: Median AQI 481999: Median AQI 662000: Median AQI 562001: Median AQI 502002: Median AQI 482003: Median AQI 492004: Median AQI 462005: Median AQI 542006: Median AQI 472007: Median AQI 542008: Median AQI 552009: Median AQI 532010: Median AQI 552011: Median AQI 462012: Median AQI 482013: Median AQI 442014: Median AQI 422015: Median AQI 402016: Median AQI 352017: Median AQI 342018: Median AQI 362019: Median AQI 362020: Median AQI 262021: Median AQI 342022: Median AQI 262023: Median AQI 412024: Median AQI 382025: Median AQI 331997200220072012201720222025
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 2025

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
Fine particles (PM2.5)356100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2025356290660000335368PM2.5
2024360272880000385584PM2.5
20233592461130000416098PM2.5
2022351306450000265382PM2.5
2021357274830000345798PM2.5
2020359325340000264975PM2.5
2019330244860000365566PM2.5
2018352276760000365570PM2.5
2017234193410000345483PM2.5
201611698180000355584PM2.5
201511077330000405573PM2.5
201411373400000426077PM2.5
201311068420000446068PM2.5
20125931280000486069PM2.5
20112541688420004667115Ozone
20105823350000556475PM2.5
20096127340000536169PM2.5
20085718390000556996PM2.5
20072771111382800054101147Ozone
200628416611440004774115Ozone
2005118417430005476109PM2.5
200428116611050004674105Ozone
200327814912081004977159Ozone
2002284164101181004884159Ozone
200127814512382005084160Ozone
20002811101353510056105156Ozone
19992708011455192066150209Ozone
1998234127713150048112179Ozone
199721712871171004697156Ozone

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.

Counties in Tennessee with a similar median AQI in 2025

All monitored counties in Tennessee

Source: U.S. EPA AirData, “Annual AQI by County” files for 1997–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem