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)
17
Good
Decatur, Alabama
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.80 μg/m³
0
55
155
255
425
605+
12.71 ppb
0
55
71
86
201
201+
0.87 ppb
0
36
76
186
605
1005+
11.02 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Decatur, Alabama
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AQI 16
Good
2.59μg/m³
PM2.5
16.90μg/m³
PM10
12.71ppb
O3
0.87ppb
SO2
10.86ppb
NO2
0.37ppm
CO
AQI 27
Good
3.05μg/m³
PM2.5
22.29μg/m³
PM10
29.24ppb
O3
0.87ppb
SO2
11.12ppb
NO2
0.27ppm
CO
AQI 26
Good
3.08μg/m³
PM2.5
14.52μg/m³
PM10
27.85ppb
O3
0.88ppb
SO2
11.26ppb
NO2
0.27ppm
CO
AQI 22
Good
3.66μg/m³
PM2.5
14.97μg/m³
PM10
17.74ppb
O3
0.88ppb
SO2
11.33ppb
NO2
0.27ppm
CO
AQI 25
Good
3.01μg/m³
PM2.5
12.80μg/m³
PM10
27.20ppb
O3
0.88ppb
SO2
11.42ppb
NO2
0.27ppm
CO
AQI 21
Good
3.22μg/m³
PM2.5
14.88μg/m³
PM10
22.87ppb
O3
0.66ppb
SO2
5.78ppb
NO2
0.22ppm
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 06:00:00 on 2025-10-22.
In the last 24 hrs, the best air quality in Decatur, Alabama was observed at 10:00:00 on 2025-10-22.
The current air quality in Decatur, Alabama is 17, categorized as Good based on real-time data.
The most common pollutant in Decatur, Alabama is PM10.
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 3.073 μg/m3.
The current PM10 concentration at Decatur, Alabama is 17.796 μg/m3.
The current carbon monoxide (CO) concentration at Decatur, Alabama is 0.269 ppm.
The current sulfur dioxide (SO2) concentration at Decatur, Alabama is 0.874 ppb.
The current ozone (O3) concentration at Decatur, Alabama is 12.707 ppm.
The current nitrogen dioxide (NO2) concentration at Decatur, Alabama is 11.015 ppb.
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