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)
35
Good
Westfield, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.77 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.01 μg/m³
0
55
155
255
425
605+
38.35 ppb
0
55
71
86
201
201+
3.40 ppb
0
36
76
186
605
1005+
12.09 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Westfield, Indiana
Westfield, Indiana
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AQI 36
Good
2.80μg/m³
PM2.5
10.02μg/m³
PM10
38.97ppb
O3
3.38ppb
SO2
12.37ppb
NO2
0.19ppm
CO
AQI 35
Good
2.72μg/m³
PM2.5
11.90μg/m³
PM10
37.98ppb
O3
3.59ppb
SO2
11.85ppb
NO2
0.19ppm
CO
AQI 35
Good
2.17μg/m³
PM2.5
9.17μg/m³
PM10
37.68ppb
O3
2.72ppb
SO2
12.62ppb
NO2
0.19ppm
CO
AQI 35
Good
3.07μg/m³
PM2.5
11.38μg/m³
PM10
38.39ppb
O3
1.24ppb
SO2
12.14ppb
NO2
0.19ppm
CO
AQI 35
Good
3.10μg/m³
PM2.5
14.80μg/m³
PM10
38.44ppb
O3
0.82ppb
SO2
11.72ppb
NO2
0.19ppm
CO
AQI 35
Good
1.63μg/m³
PM2.5
6.93μg/m³
PM10
38.09ppb
O3
3.05ppb
SO2
12.40ppb
NO2
0.19ppm
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 2026-10-05.
In the last 24 hours, the best air quality in Westfield, Indiana was observed at 02:00:00 on 2026-10-05.
As of now, the AQI in Westfield, Indiana is 35, indicating Good conditions.
Westfield, Indiana air has the highest levels of O3.
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 2.771 μg/m3.
The PM10 concentration in Westfield, Indiana is 10.005 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Westfield, Indiana is 0.19 ppm.
Currently, Westfield, Indiana has a sulfur dioxide (SO2) concentration of 3.403 ppb.
The current ozone (O3) level in Westfield, Indiana at the moment is 38.351 ppm.
Nitrogen dioxide (NO2) level in Westfield, Indiana at the moment is 12.093 ppb.
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