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AirHistory

What Is the Air Quality in Jackson, Indiana?

Jackson, Indiana has an Air Quality Grade of A (excellent) with a 5-year median AQI of 35. The dominant pollutant is Ground-Level Ozone, and air quality has been improving over the past decade.

Jackson, Indiana Air Quality Snapshot

Air Quality GradeA82/100
5-Year Median AQI35 (Good)
Most Recent Median AQI (2019)35 (Good)
Dominant PollutantGround-Level Ozone
10-Year TrendImproving (-1.77 AQI/yr)
Unhealthy Days (last 5 yr)0
National Rank (cleanest = #1)#239 of 1,020 (23th cleanest percentile)
Indiana Rank#8 of 36

What Does the A Grade Mean?

Jackson, Indiana earns an A — it is among the cleanest U.S. cities tracked by EPA monitoring, with median AQI averaging just 35 over the past five years. Days in the "Good" category dominate the calendar; air-quality alerts are rare.

Jackson, Indiana's 5-year median AQI of 35 is 6 points below the national average of 41 — meaningfully cleaner than the typical U.S. metro tracked here. Within Indiana, Jackson, Indiana runs cleaner than the state average of 41 — a positive signal that local conditions (terrain, wind patterns, emission sources) are working in residents' favor.

For context within Indiana: Floyd, Indiana currently holds the state's cleanest grade (A, AQI 36), while Marion, Indiana sits at the bottom (C, AQI 57).

What's in Jackson, Indiana's Air?

The dominant pollutant in Jackson, Indiana is Ground-Level Ozone. Ground-level ozone forms when sunlight reacts with vehicle exhaust and industrial emissions. It is worst on hot, sunny, stagnant summer days. Ozone irritates the lungs, triggers asthma attacks, and reduces lung function — even healthy adults can feel chest tightness and shortness of breath after exercising in elevated ozone.

Days by Dominant Pollutant (2019)

PollutantDays as DominantShare of Year
Ground-Level Ozone360100%

Is the Air Getting Better or Worse?

Air quality in Jackson, Indiana has been improving over the past decade, with median AQI dropping by roughly 1.8 points per year. That is consistent with the broader national pattern — most U.S. metros have seen steady reductions in particulate and ozone pollution since the 2010s as cleaner vehicles and power plants come online.

In 2014, Jackson, Indiana posted a median AQI of 42. By 2019 that figure was 35 — a drop of 7 AQI points cleaner across 6 years of EPA records.

Year-by-Year AQI in Jackson, Indiana

YearMedian AQIGood DaysUnhealthy DaysDominant Pollutant
2014421470Ozone
2015411411Ozone
2016401462Ozone
2017402060Ozone
2018323210Ozone
2019353400Ozone

Health Context for Jackson, Indiana

Across the past five years, this area has logged just 0 days where AQI rose into the "Unhealthy for Sensitive Groups" range or worse — about 0 days per year, or roughly one every other month. That is a low count by national standards.

For most healthy adults, current air quality in this area does not require any change in behavior. People with severe asthma, COPD, or recent cardiac events should still keep an eye on daily AQI alerts, especially during wildfire season. Because ozone peaks in the afternoon on hot sunny days, plan outdoor exercise for early morning or after sunset on bad-air days.

How This Grade Is Calculated

The AirHistory Air Quality Grade combines four signals: the 5-year median AQI (40% of the score), the 10-year trend direction (30%), the count of unhealthy days per year (20%), and the dominant pollutant type (10%). All four come directly from the EPA Air Quality System (AQS), which aggregates readings from federally certified monitors. Read the full methodology.

Jackson, Indiana has an Air Quality Grade of A (excellent) with a 5-year median AQI of 35. The dominant pollutant is Ground-Level Ozone, and air quality has been improving over the past decade.

This answer pulls from the EPA Air Quality System (AQS), the authoritative federal source for U.S. air quality and pollution monitoring. The headline number above is the direct answer; what follows is the additional context most readers need to use the answer for a real decision rather than just a fact lookup.

A practical caveat: the headline answer above reflects the most recent the EPA Air Quality System (AQS) vintage; underlying data is often revised for months after first publication, and the right reference for any specific decision is whichever vintage is current at the time of the decision. The as-of date is stamped on every page.

Source: EPA Outdoor Air Quality Data, 2026.