Stay updated with real-time air quality in Decatur, Alabama 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)
33
Good
Decatur, Alabama
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.03 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.84 μg/m³
0
55
155
255
425
605+
13.47 ppb
0
55
71
86
201
201+
0.93 ppb
0
36
76
186
605
1005+
4.40 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Decatur, Alabama
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AQI 64
Moderate
15.72μg/m³
PM2.5
68.03μg/m³
PM10
19.48ppb
O3
0.85ppb
SO2
8.32ppb
NO2
0.24ppm
CO
AQI 56
Moderate
11.61μg/m³
PM2.5
30.60μg/m³
PM10
22.39ppb
O3
0.80ppb
SO2
8.35ppb
NO2
0.22ppm
CO
AQI 56
Moderate
11.91μg/m³
PM2.5
27.65μg/m³
PM10
23.43ppb
O3
0.80ppb
SO2
8.38ppb
NO2
0.23ppm
CO
AQI 58
Moderate
12.96μg/m³
PM2.5
33.93μg/m³
PM10
22.10ppb
O3
0.81ppb
SO2
8.39ppb
NO2
0.23ppm
CO
AQI 54
Moderate
10.64μg/m³
PM2.5
27.23μg/m³
PM10
22.81ppb
O3
0.78ppb
SO2
8.41ppb
NO2
0.23ppm
CO
AQI 60
Moderate
14.14μg/m³
PM2.5
56.90μg/m³
PM10
21.97ppb
O3
0.91ppb
SO2
8.32ppb
NO2
0.24ppm
CO
Air quality data and pollutant measurements for Alabama, 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 Decatur, Alabama is updated every hour.
The worst air quality in Decatur, Alabama in the last 24 hours was observed at 12:00:00 on 2025-07-13.
In the last 24 hrs, the best air quality in Decatur, Alabama was observed at 01:00:00 on 2025-07-12.
The current air quality in Decatur, Alabama is 64, categorized as Moderate based on real-time data.
The most common pollutant in Decatur, Alabama is PM2.5.
If the air quality in Decatur, Alabama is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Decatur, Alabama is 15.688 μg/m3.
The current PM10 concentration at Decatur, Alabama is 67.938 μg/m3.
The current carbon monoxide (CO) concentration at Decatur, Alabama is 0.239 ppm.
The current sulfur dioxide (SO2) concentration at Decatur, Alabama is 0.845 ppb.
The current ozone (O3) concentration at Decatur, Alabama is 19.548 ppm.
The current nitrogen dioxide (NO2) concentration at Decatur, Alabama is 8.344 ppb.
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