EnviroNearby

Franklin County, Mississippi air quality history

Daily Air Quality Index summaries from EPA monitors in Franklin, Mississippi, 1993–1995.

70%
Good days in 1995
42
Median daily AQI, 1995
18
Days above 100 in 1995
272
Days with an AQI in 1995 (of 365)

In 1995, EPA reported a daily Air Quality Index (AQI) for Franklin, Mississippi on 272 days. 190 of those days (70%) were in the Good range, and the median daily AQI was 42. That median is about the same as the typical monitored county in Mississippi (median 42 across 12 counties), and higher than the typical monitored U.S. county (39). The main pollutant was ozone on 272 days.

EPA did not report an AQI for every day of 1995 here (272 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 1995; EPA's files for 1996–2025 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%1993: Good 218 of 273 days1993: Moderate 49 of 273 days1993: Unhealthy for Sensitive Groups 6 of 273 days19931994: Good 229 of 269 days1994: Moderate 36 of 269 days1994: Unhealthy for Sensitive Groups 4 of 269 days19941995: Good 190 of 272 days1995: Moderate 64 of 272 days1995: Unhealthy for Sensitive Groups 16 of 272 days1995: Unhealthy 2 of 272 days1995
  • 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 year0501001993: 90th percentile AQI 741994: 90th percentile AQI 641995: 90th percentile AQI 901993: Median AQI 411994: Median AQI 341995: Median AQI 42199319941995
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 1995

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
Ozone272100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
199527219064162004290164Ozone
19942692293640003464122Ozone
19932732184960004174150Ozone

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 Mississippi

Source: U.S. EPA AirData, “Annual AQI by County” files for 1993–1995 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem