Louisville air monitors show mostly good conditions, with moderate PM2.5 at French Settlement

Louisville-area air-quality monitoring data dated July 27 showed mostly good ozone and particle conditions at several reported sites, while the French Settlement monitor recorded a moderate fine-particle reading, according to Louisville Metro’s Air Pollution Control District.

The French Settlement site was listed with a PM2.5 Air Quality Index value of 53. The district dashboard categorized that value as moderate. The reading applies to that monitoring location and does not establish air quality conditions in every Louisville neighborhood.

What the dashboard measures

The district’s public Air Quality Index dashboard reports conditions for ground-level ozone and PM2.5, or fine particulate matter, across the Louisville area. The July 27 information showed good conditions at several of the cited ozone and PM2.5 monitoring points.

Louisville maintains a public air-quality monitoring and forecast system through the Air Pollution Control District. The dashboard provides public access to local monitoring information, allowing residents to review conditions by monitoring location rather than relying on a single regional reading.

Separate official June 2026 air-quality data tables identify Louisville-area monitoring locations, including Algonquin Parkway, and provide pollutant and meteorological measurements for area sites. Those tables describe the monitoring network; they are not a replacement for the July 27 dashboard snapshot cited here.

How to interpret the French Settlement reading

Air quality can differ among monitoring sites and can change during the course of a day. For that reason, the moderate PM2.5 result at French Settlement should be understood as a localized observation, not as evidence that conditions were moderate throughout Louisville.

The available data do not identify a pollution source for the French Settlement reading. They also do not establish a specific health effect from that result. The packet does not support attributing the reading to an industrial source or describing Louisville-wide air quality as unhealthy.

The dashboard’s public guidance notes that children, teenagers and active adults can face greater ozone-exposure risk during warmer weather. That guidance concerns ozone exposure, while the French Settlement value in this report was a PM2.5 measurement.

July 27 data are not an Aug. 3 observation

The cited monitoring information was timestamped July 27, 2026, although the dashboard was accessed for an Aug. 3 assignment. It is therefore a dated monitoring snapshot, not a same-day Aug. 3 observation or a forecast for later conditions.

Residents seeking the latest local information can consult the district’s live dashboard. Because conditions may vary by location and change during the day, the most recent site-level reading is the appropriate reference for current conditions.