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)
27
Good
West Caldwell, New Jersey
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.53 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
24.44 μg/m³
0
55
155
255
425
605+
19.12 ppb
0
55
71
86
201
201+
0.29 ppb
0
36
76
186
605
1005+
6.64 ppb
0
54
101
361
1250
2050+
0.34 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
West Caldwell, New Jersey
West Caldwell, New Jersey
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AQI 27
Good
5.01μg/m³
PM2.5
22.16μg/m³
PM10
21.40ppb
O3
0.35ppb
SO2
5.16ppb
NO2
0.27ppm
CO
AQI 27
Good
4.94μg/m³
PM2.5
21.68μg/m³
PM10
21.17ppb
O3
0.35ppb
SO2
5.30ppb
NO2
0.26ppm
CO
AQI 27
Good
4.90μg/m³
PM2.5
21.46μg/m³
PM10
21.42ppb
O3
0.35ppb
SO2
5.33ppb
NO2
0.26ppm
CO
AQI 27
Good
5.12μg/m³
PM2.5
22.68μg/m³
PM10
21.13ppb
O3
0.35ppb
SO2
5.08ppb
NO2
0.27ppm
CO
AQI 27
Good
4.99μg/m³
PM2.5
21.98μg/m³
PM10
21.26ppb
O3
0.36ppb
SO2
4.29ppb
NO2
0.27ppm
CO
AQI 27
Good
5.07μg/m³
PM2.5
22.76μg/m³
PM10
17.72ppb
O3
0.36ppb
SO2
4.58ppb
NO2
0.26ppm
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 2026-09-19.
In the last 24 hrs, the best air quality in West Caldwell, New Jersey was observed at 11:00:00 on 2026-09-20.
The current air quality in West Caldwell, New Jersey is 27, 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 4.528 μg/m3.
The current PM10 concentration at West Caldwell, New Jersey is 24.436 μg/m3.
The current carbon monoxide (CO) concentration at West Caldwell, New Jersey is 0.343 ppm.
The current sulfur dioxide (SO2) concentration at West Caldwell, New Jersey is 0.295 ppb.
The current ozone (O3) concentration at West Caldwell, New Jersey is 19.12 ppm.
The current nitrogen dioxide (NO2) concentration at West Caldwell, New Jersey is 6.644 ppb.
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