Jackson Air Quality in May

Across 2019–2025, Jackson's May air quality had a median AQI of 52 (Moderate) over 217 monitored days in the Jackson, MS area. 0.0% of May days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 72.8% of days. The cleanest May on record here was 2025 (median AQI 44, 0 days above 100) and the worst was 2023 (median 59, 0 days above 100, peak AQI 96).

52
Median AQI
Moderate
0.0%
Days above AQI 100
0 of 217 days
62
90th percentile AQI
worst 1 day in 10
96
Peak AQI
Moderate
PM2.5
Main pollutant
72.8% of days
42.9%
Good days
93 of 217
  • Good: 42.9%
  • Moderate: 57.1%
  • Unhealthy for Sensitive Groups: 0.0%
  • Unhealthy or worse: 0.0%

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QUICK ANSWER

How is the air in Jackson in May?

Moderate on a typical day: median AQI 52 across 2019–2025, with 0.0% of May days above AQI 100. Fine particulate matter (PM2.5) is the main driver.

  • 42.9% of May days were Good (AQI 0–50), 57.1% Moderate (51–100).
  • 0 days of 217 reached AQI 101+; the May peak was 96.
  • Best May: 2025; worst May: 2023.

Frequently asked questions

What is the air quality like in Jackson in May?

Across 2019–2025, the median daily AQI in Jackson in May was 52 (Moderate). 42.9% of days were Good, 57.1% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.

Is May a good time for outdoor exercise in Jackson?

A typical May day in Jackson is Moderate (median AQI 52): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of May days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.

Which pollutant causes Jackson's May air quality problems?

Fine particulate matter (PM2.5) set the daily AQI on 72.8% of May days in Jackson. The highest May AQI recorded in 2019–2025 was 96 (Moderate), in 2023.

Jackson May air quality, year by year

Jackson May air quality by year (Jackson, MS, EPA AQS daily AQI)

YearDays monitoredMedian AQIDays above 100Peak AQIMain pollutant
20193151062PM2.5
20203152062PM2.5
20213151063PM2.5
20223153072PM2.5
2023worst3159096PM2.5
20243151082PM2.5
2025cleanest3144074O3

What May air means in Jackson

A typical May day in Jackson is Moderate (median AQI 52): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and fewer than 1% of May days reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.

May's median AQI of 52 is in line with Jackson's whole-year median of 52, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median May AQI across every EPA metro area (104,064 metro-days, 2019–2025) is 44, so Jackson runs above the national May norm; 0.0% of its May days topped AQI 100 versus 1.3% nationally (below average).

May is part of Jackson's spring season (March, April, May); the spring page pools all three months.

Activity-specific thresholds: running, cycling, kids' sports.

Right now in Jackson

The latest EPA AirNow observation puts Jackson's AQI at 75 (PM2.5). The figures above are multi-year month statistics, not today's reading.

View current Jackson air quality →

Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Jackson, MS), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.