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)
25
Good
Westfield, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.69 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.05 μg/m³
0
55
155
255
425
605+
26.77 ppb
0
55
71
86
201
201+
0.62 ppb
0
36
76
186
605
1005+
13.16 ppb
0
54
101
361
1250
2050+
0.34 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Westfield, Indiana
Westfield, Indiana
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AQI 26
Good
3.78μg/m³
PM2.5
14.42μg/m³
PM10
27.81ppb
O3
0.56ppb
SO2
13.15ppb
NO2
0.35ppm
CO
AQI 29
Good
2.24μg/m³
PM2.5
14.14μg/m³
PM10
30.87ppb
O3
0.75ppb
SO2
13.23ppb
NO2
0.34ppm
CO
AQI 27
Good
2.24μg/m³
PM2.5
8.75μg/m³
PM10
28.98ppb
O3
0.54ppb
SO2
12.95ppb
NO2
0.34ppm
CO
AQI 26
Good
3.75μg/m³
PM2.5
16.71μg/m³
PM10
28.07ppb
O3
0.63ppb
SO2
13.21ppb
NO2
0.35ppm
CO
AQI 22
Good
3.77μg/m³
PM2.5
13.34μg/m³
PM10
22.96ppb
O3
0.61ppb
SO2
12.05ppb
NO2
0.34ppm
CO
AQI 26
Good
1.63μg/m³
PM2.5
6.18μg/m³
PM10
28.41ppb
O3
0.60ppb
SO2
13.10ppb
NO2
0.34ppm
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 11:00:00 on 2026-01-22.
In the last 24 hours, the best air quality in Westfield, Indiana was observed at 07:00:00 on 2026-01-23.
As of now, the AQI in Westfield, Indiana is 25, 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 3.685 μg/m3.
The PM10 concentration in Westfield, Indiana is 12.046 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Westfield, Indiana is 0.345 ppm.
Currently, Westfield, Indiana has a sulfur dioxide (SO2) concentration of 0.623 ppb.
The current ozone (O3) level in Westfield, Indiana at the moment is 26.769 ppm.
Nitrogen dioxide (NO2) level in Westfield, Indiana at the moment is 13.163 ppb.
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