Baton Rouge Air Quality in 2019
In 2019, Baton Rouge's air quality (Baton Rouge, LA area) had a median daily AQI of 53 (Moderate) across 365 monitored days. 9 days (2.5%) reached Unhealthy for Sensitive Groups or worse, 148 were Good, and the year's peak AQI was 119 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 253 of those days. The cleanest month of 2019 was February (median AQI 45, 0 days above 100) and the worst was May (median 54, 5 days above 100, peak 112).
- Good: 40.5%
- Moderate: 57.0%
- Unhealthy for Sensitive Groups: 2.5%
- Unhealthy or worse: 0.0%
Extra Protection for Baton Rouge Homes
Air quality in Baton Rouge is moderate (AQI 57), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
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How was Baton Rouge's air quality in 2019?
Moderate on a typical day: median AQI 53, with 9 days above AQI 100 out of 365 monitored — the 4th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2019: 119 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 253 days.
- ✓Cleanest month: February; worst: May.
Frequently asked questions
What was the average AQI in Baton Rouge in 2019?▾
EPA's Air Quality System puts Baton Rouge's (Baton Rouge, LA) median daily AQI for 2019 at 53, which is Moderate. 9 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 119.
Which month had the worst air quality in Baton Rouge in 2019?▾
The cleanest month of 2019 was February (median AQI 45, 0 days above 100) and the worst was May (median 54, 5 days above 100, peak 112).
Was 2019 a good or bad year for Baton Rouge's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2019 ranks 4th cleanest by days above AQI 100. 2019's median of 53 is in line with the area's typical annual median of 53.
Baton Rouge month by month in 2019
Baton Rouge air quality month by month, 2019 (Baton Rouge, LA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 46 | 0 | 64 | PM2.5 |
| Februarycleanest | 28 | 45 | 0 | 69 | PM2.5 |
| March | 31 | 52 | 0 | 97 | O3 |
| April | 30 | 52 | 0 | 97 | O3 |
| Mayworst | 31 | 54 | 5 | 112 | O3 |
| June | 30 | 63 | 3 | 115 | PM2.5 |
| July | 31 | 55 | 0 | 92 | PM2.5 |
| August | 31 | 53 | 0 | 87 | PM2.5 |
| September | 30 | 59 | 0 | 100 | PM2.5 |
| October | 31 | 48 | 1 | 119 | PM2.5 |
| November | 30 | 55 | 0 | 87 | PM2.5 |
| December | 31 | 48 | 0 | 92 | PM2.5 |
How 2019 compares
Among the 7 years EPA has published for the area (2019–2025), 2019 ranks 4th cleanest by days above AQI 100.
2019's median of 53 is in line with the area's typical annual median of 53.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Baton Rouge
The latest EPA AirNow observation puts Baton Rouge's AQI at 57 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Baton Rouge air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Baton Rouge, LA), 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.