Stay updated with real-time air quality in Caldwell, Idaho 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)
86
Moderate
Caldwell, Idaho
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
28.34 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
78.78 μg/m³
0
55
155
255
425
605+
47.06 ppb
0
55
71
86
201
201+
0.56 ppb
0
36
76
186
605
1005+
2.44 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Caldwell, Idaho
Caldwell, Idaho
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AQI 54
Moderate
10.95μg/m³
PM2.5
49.98μg/m³
PM10
55.74ppb
O3
0.62ppb
SO2
2.22ppb
NO2
0.10ppm
CO
AQI 52
Moderate
10.11μg/m³
PM2.5
40.13μg/m³
PM10
55.19ppb
O3
0.41ppb
SO2
2.24ppb
NO2
0.10ppm
CO
AQI 54
Moderate
10.73μg/m³
PM2.5
47.73μg/m³
PM10
54.16ppb
O3
0.42ppb
SO2
2.22ppb
NO2
0.10ppm
CO
AQI 52
Moderate
10.41μg/m³
PM2.5
54.63μg/m³
PM10
53.58ppb
O3
0.32ppb
SO2
2.29ppb
NO2
0.10ppm
CO
AQI 52
Moderate
10.20μg/m³
PM2.5
51.27μg/m³
PM10
54.85ppb
O3
0.36ppb
SO2
2.26ppb
NO2
0.10ppm
CO
AQI 54
Moderate
10.76μg/m³
PM2.5
46.41μg/m³
PM10
55.50ppb
O3
0.37ppb
SO2
2.20ppb
NO2
0.10ppm
CO
Air quality data and pollutant measurements for Idaho, 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 Caldwell, Idaho is updated every hour.
The worst air quality in Caldwell, Idaho in the last 24 hours was observed at 02:00:00 on 2025-09-03.
In the last 24 hrs, the best air quality in Caldwell, Idaho was observed at 05:00:00 on 2025-09-03.
The current air quality in Caldwell, Idaho is 47, categorized as Good based on real-time data.
The most common pollutant in Caldwell, Idaho is O3.
If the air quality in Caldwell, Idaho is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Caldwell, Idaho is 8.436 μg/m3.
The current PM10 concentration at Caldwell, Idaho is 39.717 μg/m3.
The current carbon monoxide (CO) concentration at Caldwell, Idaho is 0.105 ppm.
The current sulfur dioxide (SO2) concentration at Caldwell, Idaho is 0.413 ppb.
The current ozone (O3) concentration at Caldwell, Idaho is 50.834 ppm.
The current nitrogen dioxide (NO2) concentration at Caldwell, Idaho is 2.917 ppb.
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