EnviroNearby

Jackson County, Indiana air quality history

Daily Air Quality Index summaries from EPA monitors in Jackson, Indiana, 2000–2019.

94%
Good days in 2019
35
Median daily AQI, 2019
0
Days above 100 in 2019
360
Days with an AQI in 2019 (of 365)

In 2019, EPA reported a daily Air Quality Index (AQI) for Jackson, Indiana on 360 days. 340 of those days (94%) were in the Good range, and the median daily AQI was 35. That median is lower than the typical monitored county in Indiana (median 40.5 across 34 counties), and lower than the typical monitored U.S. county (41). The main pollutant was ozone on 360 days. Across the years with fuller monitoring, the share of Good days rose: an average of 57% in 2000–2002 versus 93% in 2017–2019.

The most recent year with data for this county is 2019; EPA's files for 2020–2025 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 118 of 179 days2000: Moderate 47 of 179 days2000: Unhealthy for Sensitive Groups 11 of 179 days2000: Unhealthy 3 of 179 days20002001: Good 104 of 183 days2001: Moderate 61 of 183 days2001: Unhealthy for Sensitive Groups 17 of 183 days2001: Unhealthy 1 of 183 days2002: Good 86 of 183 days2002: Moderate 64 of 183 days2002: Unhealthy for Sensitive Groups 25 of 183 days2002: Unhealthy 8 of 183 days20022003: Good 99 of 183 days2003: Moderate 66 of 183 days2003: Unhealthy for Sensitive Groups 18 of 183 days2004: Good 137 of 180 days2004: Moderate 42 of 180 days2004: Unhealthy for Sensitive Groups 1 of 180 days20042005: Good 91 of 183 days2005: Moderate 69 of 183 days2005: Unhealthy for Sensitive Groups 23 of 183 days2006: Good 115 of 183 days2006: Moderate 60 of 183 days2006: Unhealthy for Sensitive Groups 8 of 183 days20062007: Good 100 of 183 days2007: Moderate 62 of 183 days2007: Unhealthy for Sensitive Groups 21 of 183 days2008: Good 128 of 183 days2008: Moderate 52 of 183 days2008: Unhealthy for Sensitive Groups 3 of 183 days20082009: Good 160 of 183 days2009: Moderate 22 of 183 days2009: Unhealthy for Sensitive Groups 1 of 183 days2010: Good 127 of 172 days2010: Moderate 43 of 172 days2010: Unhealthy for Sensitive Groups 2 of 172 days20102011: Good 154 of 183 days2011: Moderate 29 of 183 days2012: Good 124 of 148 days2012: Moderate 23 of 148 days2012: Unhealthy for Sensitive Groups 1 of 148 days20122013: Good 158 of 183 days2013: Moderate 24 of 183 days2013: Unhealthy for Sensitive Groups 1 of 183 days2014: Good 147 of 181 days2014: Moderate 34 of 181 days20142015: Good 141 of 167 days2015: Moderate 25 of 167 days2015: Unhealthy for Sensitive Groups 1 of 167 days2016: Good 146 of 183 days2016: Moderate 35 of 183 days2016: Unhealthy for Sensitive Groups 2 of 183 days20162017: Good 206 of 226 days2017: Moderate 20 of 226 days2018: Good 321 of 341 days2018: Moderate 20 of 341 days20182019: Good 340 of 360 days2019: Moderate 20 of 360 days2019
  • 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 972001: 90th percentile AQI 1002002: 90th percentile AQI 1262003: 90th percentile AQI 1002004: 90th percentile AQI 712005: 90th percentile AQI 1082006: 90th percentile AQI 842007: 90th percentile AQI 1012008: 90th percentile AQI 712009: 90th percentile AQI 582010: 90th percentile AQI 742011: 90th percentile AQI 582012: 90th percentile AQI 612013: 90th percentile AQI 582014: 90th percentile AQI 582015: 90th percentile AQI 582016: 90th percentile AQI 672017: 90th percentile AQI 502018: 90th percentile AQI 472019: 90th percentile AQI 472000: Median AQI 472001: Median AQI 492002: Median AQI 542003: Median AQI 482004: Median AQI 442005: Median AQI 512006: Median AQI 462007: Median AQI 492008: Median AQI 462009: Median AQI 402010: Median AQI 452011: Median AQI 422012: Median AQI 422013: Median AQI 432014: Median AQI 422015: Median AQI 412016: Median AQI 402017: Median AQI 402018: Median AQI 322019: Median AQI 3520002002200420062008201020122014201620182019
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 2019

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
Ozone360100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2019360340200000354780Ozone
2018341321200000324790Ozone
2017226206200000405093Ozone
20161831463520004067129Ozone
20151671412510004158101Ozone
2014181147340000425893Ozone
20131831582410004358105Ozone
20121481242310004261119Ozone
20111831542900004258100Ozone
20101721274320004574105Ozone
20091831602210004058119Ozone
20081831285230004671122Ozone
2007183100622100049101143Ozone
20061831156080004684133Ozone
200518391692300051108150Ozone
20041801374210004471119Ozone
200318399661800048100147Ozone
200218386642580054126172Ozone
2001183104611710049100154Ozone
200017911847113004797164Ozone

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 Indiana with a similar median AQI in 2019

All monitored counties in Indiana

Source: U.S. EPA AirData, “Annual AQI by County” files for 2000–2019 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem