Stay updated with real-time air quality in Westfield, 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)
49
Good
Westfield, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.84 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.50 μg/m³
0
55
155
255
425
605+
28.30 ppb
0
55
71
86
201
201+
0.94 ppb
0
36
76
186
605
1005+
6.60 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Westfield, Indiana
Westfield, Indiana
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AQI 49
Good
8.88μg/m³
PM2.5
37.02μg/m³
PM10
25.21ppb
O3
0.94ppb
SO2
6.55ppb
NO2
0.27ppm
CO
AQI 49
Good
8.86μg/m³
PM2.5
35.53μg/m³
PM10
16.18ppb
O3
0.95ppb
SO2
6.55ppb
NO2
0.26ppm
CO
AQI 44
Good
8.28μg/m³
PM2.5
31.05μg/m³
PM10
21.55ppb
O3
0.94ppb
SO2
5.85ppb
NO2
0.28ppm
CO
AQI 44
Good
7.87μg/m³
PM2.5
28.22μg/m³
PM10
26.89ppb
O3
0.93ppb
SO2
7.12ppb
NO2
0.27ppm
CO
AQI 44
Good
8.21μg/m³
PM2.5
34.76μg/m³
PM10
28.96ppb
O3
0.67ppb
SO2
7.12ppb
NO2
0.26ppm
CO
AQI 44
Good
8.09μg/m³
PM2.5
30.06μg/m³
PM10
22.84ppb
O3
0.94ppb
SO2
5.87ppb
NO2
0.28ppm
CO
Air quality and pollutant data for Indiana, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Westfield, Indiana is updated every hour for accuracy.
In the past 24 hours, the air quality in Westfield, Indiana was at its worst at 03:00:00 on 2026-06-08.
In the last 24 hours, the best air quality in Westfield, Indiana was observed at 04:00:00 on 2026-06-08.
As of now, the AQI in Westfield, Indiana is 49, indicating Good conditions.
Westfield, Indiana air has the highest levels of PM2.5.
Poor air quality in Westfield, Indiana means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Westfield, Indiana are currently 8.842 μg/m3.
The PM10 concentration in Westfield, Indiana is 23.505 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Westfield, Indiana is 0.264 ppm.
Currently, Westfield, Indiana has a sulfur dioxide (SO2) concentration of 0.94 ppb.
The current ozone (O3) level in Westfield, Indiana at the moment is 28.301 ppm.
Nitrogen dioxide (NO2) level in Westfield, Indiana at the moment is 6.598 ppb.
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