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)
34
Good
West Caldwell, New Jersey
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.17 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.11 μg/m³
0
55
155
255
425
605+
36.51 ppb
0
55
71
86
201
201+
0.43 ppb
0
36
76
186
605
1005+
10.48 ppb
0
54
101
361
1250
2050+
0.55 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
West Caldwell, New Jersey
West Caldwell, New Jersey
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AQI 34
Good
5.21μg/m³
PM2.5
23.11μg/m³
PM10
36.73ppb
O3
0.43ppb
SO2
11.36ppb
NO2
0.70ppm
CO
AQI 34
Good
5.56μg/m³
PM2.5
24.79μg/m³
PM10
36.79ppb
O3
0.43ppb
SO2
11.17ppb
NO2
0.67ppm
CO
AQI 34
Good
6.01μg/m³
PM2.5
27.05μg/m³
PM10
36.80ppb
O3
0.43ppb
SO2
10.32ppb
NO2
0.59ppm
CO
AQI 33
Good
3.88μg/m³
PM2.5
16.71μg/m³
PM10
36.46ppb
O3
0.44ppb
SO2
10.12ppb
NO2
0.58ppm
CO
AQI 34
Good
3.74μg/m³
PM2.5
16.26μg/m³
PM10
36.67ppb
O3
0.44ppb
SO2
9.78ppb
NO2
0.56ppm
CO
AQI 33
Good
3.78μg/m³
PM2.5
16.89μg/m³
PM10
36.04ppb
O3
0.44ppb
SO2
10.51ppb
NO2
0.53ppm
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 10:00:00 on 2026-04-24.
In the last 24 hrs, the best air quality in West Caldwell, New Jersey was observed at 06:00:00 on 2026-04-25.
The current air quality in West Caldwell, New Jersey is 34, categorized as Good based on real-time data.
The most common pollutant in West Caldwell, New Jersey is O3.
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 4.171 μg/m3.
The current PM10 concentration at West Caldwell, New Jersey is 25.11 μg/m3.
The current carbon monoxide (CO) concentration at West Caldwell, New Jersey is 0.545 ppm.
The current sulfur dioxide (SO2) concentration at West Caldwell, New Jersey is 0.435 ppb.
The current ozone (O3) concentration at West Caldwell, New Jersey is 36.511 ppm.
The current nitrogen dioxide (NO2) concentration at West Caldwell, New Jersey is 10.481 ppb.
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