Stay updated with real-time air quality in West Caldwell, New Jersey 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)
38
Good
West Caldwell, New Jersey
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.03 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.58 μg/m³
0
55
155
255
425
605+
25.42 ppb
0
55
71
86
201
201+
0.23 ppb
0
36
76
186
605
1005+
22.76 ppb
0
54
101
361
1250
2050+
0.33 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
West Caldwell, New Jersey
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AQI 49
Good
8.88μg/m³
PM2.5
38.72μg/m³
PM10
16.77ppb
O3
0.22ppb
SO2
32.33ppb
NO2
0.31ppm
CO
AQI 49
Good
9.30μg/m³
PM2.5
40.87μg/m³
PM10
17.48ppb
O3
0.22ppb
SO2
31.18ppb
NO2
0.30ppm
CO
AQI 52
Moderate
9.98μg/m³
PM2.5
44.66μg/m³
PM10
19.26ppb
O3
0.22ppb
SO2
28.61ppb
NO2
0.28ppm
CO
AQI 44
Good
8.25μg/m³
PM2.5
28.06μg/m³
PM10
9.95ppb
O3
0.23ppb
SO2
30.67ppb
NO2
0.33ppm
CO
AQI 38
Good
7.35μg/m³
PM2.5
25.78μg/m³
PM10
12.14ppb
O3
0.23ppb
SO2
29.97ppb
NO2
0.33ppm
CO
AQI 38
Good
6.95μg/m³
PM2.5
28.68μg/m³
PM10
20.29ppb
O3
0.23ppb
SO2
22.77ppb
NO2
0.34ppm
CO
Air quality data and pollutant measurements for New Jersey, 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 West Caldwell, New Jersey is updated every hour.
The worst air quality in West Caldwell, New Jersey in the last 24 hours was observed at 06:00:00 on 2026-03-14.
In the last 24 hrs, the best air quality in West Caldwell, New Jersey was observed at 03:00:00 on 2026-03-13.
The current air quality in West Caldwell, New Jersey is 38, categorized as Good based on real-time data.
The most common pollutant in West Caldwell, New Jersey is PM2.5.
If the air quality in West Caldwell, New Jersey is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at West Caldwell, New Jersey is 7.026 μg/m3.
The current PM10 concentration at West Caldwell, New Jersey is 23.577 μg/m3.
The current carbon monoxide (CO) concentration at West Caldwell, New Jersey is 0.325 ppm.
The current sulfur dioxide (SO2) concentration at West Caldwell, New Jersey is 0.23 ppb.
The current ozone (O3) concentration at West Caldwell, New Jersey is 25.421 ppm.
The current nitrogen dioxide (NO2) concentration at West Caldwell, New Jersey is 22.762 ppb.
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