Stay updated with real-time air quality in Greenfield, Indiana 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
Greenfield, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.46 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.31 μg/m³
0
55
155
255
425
605+
18.95 ppb
0
55
71
86
201
201+
1.73 ppb
0
36
76
186
605
1005+
5.42 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Greenfield, Indiana
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AQI 27
Good
4.55μg/m³
PM2.5
19.63μg/m³
PM10
19.16ppb
O3
1.51ppb
SO2
5.37ppb
NO2
0.23ppm
CO
AQI 38
Good
6.82μg/m³
PM2.5
28.08μg/m³
PM10
23.23ppb
O3
0.99ppb
SO2
5.38ppb
NO2
0.23ppm
CO
AQI 33
Good
6.32μg/m³
PM2.5
24.14μg/m³
PM10
21.44ppb
O3
0.88ppb
SO2
5.39ppb
NO2
0.23ppm
CO
AQI 27
Good
5.19μg/m³
PM2.5
22.30μg/m³
PM10
19.73ppb
O3
1.41ppb
SO2
5.43ppb
NO2
0.23ppm
CO
AQI 38
Good
6.58μg/m³
PM2.5
21.69μg/m³
PM10
16.25ppb
O3
1.47ppb
SO2
5.27ppb
NO2
0.24ppm
CO
AQI 33
Good
6.32μg/m³
PM2.5
26.10μg/m³
PM10
21.22ppb
O3
0.84ppb
SO2
5.40ppb
NO2
0.23ppm
CO
The air quality data for Indiana, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Greenfield, Indiana are available every hour.
Greenfield, Indiana experienced its worst air quality at 03:00:00, 2026-09-07.
The best air quality in Greenfield, Indiana was observed at 05:00:00 on 2026-09-06.
The air quality in Greenfield, Indiana right now is Good, with an AQI of 33.
In Greenfield, Indiana, PM2.5 is the most frequently found pollutant.
When air quality in Greenfield, Indiana is compromised, staying indoors and wearing a mask can reduce health risks.
Greenfield, Indiana currently has a PM2.5 concentration of 6.465 μg/m3.
Greenfield, Indiana currently has a PM10 concentration of 26.31 μg/m3.
The current carbon monoxide (CO) level in Greenfield, Indiana is 0.243 ppm.
The current sulfur dioxide (SO2) concentration in Greenfield, Indiana is 1.725 ppb.
Greenfield, Indiana currently has an ozone (O3) concentration of 18.952 ppm.
The current level of nitrogen dioxide (NO2) in Greenfield, Indiana is 5.42 ppb.
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