Stay updated with real-time air quality in Gretna, Louisiana featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
44
Good
Gretna, Louisiana
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
8.01 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
36.55 μg/m³
0
55
155
255
425
605+
35.89 ppb
0
55
71
86
201
201+
1.32 ppb
0
36
76
186
605
1005+
2.13 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Gretna, Louisiana
Gretna, Louisiana
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AQI 54
Moderate
11.25μg/m³
PM2.5
50.53μg/m³
PM10
48.85ppb
O3
0.89ppb
SO2
1.66ppb
NO2
0.18ppm
CO
AQI 56
Moderate
11.59μg/m³
PM2.5
52.13μg/m³
PM10
49.12ppb
O3
0.89ppb
SO2
1.65ppb
NO2
0.18ppm
CO
AQI 56
Moderate
12.40μg/m³
PM2.5
55.98μg/m³
PM10
48.54ppb
O3
0.89ppb
SO2
1.66ppb
NO2
0.18ppm
CO
AQI 54
Moderate
10.75μg/m³
PM2.5
48.17μg/m³
PM10
48.89ppb
O3
0.90ppb
SO2
1.67ppb
NO2
0.18ppm
CO
AQI 56
Moderate
11.74μg/m³
PM2.5
52.88μg/m³
PM10
49.37ppb
O3
0.89ppb
SO2
1.64ppb
NO2
0.18ppm
CO
AQI 54
Moderate
11.20μg/m³
PM2.5
50.33μg/m³
PM10
49.37ppb
O3
0.89ppb
SO2
1.65ppb
NO2
0.18ppm
CO
Air quality data and pollutant measurements for Louisiana, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Gretna, Louisiana is updated every hour.
The worst air quality in Gretna, Louisiana in the last 24 hours was observed at 08:00:00 on 2025-09-04.
In the last 24 hrs, the best air quality in Gretna, Louisiana was observed at 04:00:00 on 2025-09-04.
The current air quality in Gretna, Louisiana is 54, categorized as Moderate based on real-time data.
The most common pollutant in Gretna, Louisiana is PM2.5.
If the air quality in Gretna, Louisiana is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Gretna, Louisiana is 11.307 μg/m3.
The current PM10 concentration at Gretna, Louisiana is 50.8 μg/m3.
The current carbon monoxide (CO) concentration at Gretna, Louisiana is 0.185 ppm.
The current sulfur dioxide (SO2) concentration at Gretna, Louisiana is 0.893 ppb.
The current ozone (O3) concentration at Gretna, Louisiana is 48.825 ppm.
The current nitrogen dioxide (NO2) concentration at Gretna, Louisiana is 1.662 ppb.
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