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)
27
Good
Caldwell, Idaho
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.42 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.95 μg/m³
0
55
155
255
425
605+
16.81 ppb
0
55
71
86
201
201+
1.06 ppb
0
36
76
186
605
1005+
14.02 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Caldwell, Idaho
Caldwell, Idaho
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AQI 27
Good
5.38μg/m³
PM2.5
20.07μg/m³
PM10
17.91ppb
O3
1.06ppb
SO2
14.59ppb
NO2
0.27ppm
CO
AQI 44
Good
7.68μg/m³
PM2.5
30.18μg/m³
PM10
14.41ppb
O3
1.04ppb
SO2
15.88ppb
NO2
0.29ppm
CO
AQI 33
Good
6.06μg/m³
PM2.5
25.48μg/m³
PM10
17.37ppb
O3
1.04ppb
SO2
16.05ppb
NO2
0.28ppm
CO
AQI 38
Good
6.74μg/m³
PM2.5
34.87μg/m³
PM10
12.65ppb
O3
1.01ppb
SO2
18.36ppb
NO2
0.30ppm
CO
AQI 38
Good
6.62μg/m³
PM2.5
32.69μg/m³
PM10
14.11ppb
O3
1.02ppb
SO2
17.67ppb
NO2
0.29ppm
CO
AQI 38
Good
7.48μg/m³
PM2.5
36.70μg/m³
PM10
19.57ppb
O3
1.03ppb
SO2
16.91ppb
NO2
0.29ppm
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 11:00:00 on 2025-07-13.
In the last 24 hrs, the best air quality in Caldwell, Idaho was observed at 02:00:00 on 2025-07-14.
The current air quality in Caldwell, Idaho is 27, categorized as Good based on real-time data.
The most common pollutant in Caldwell, Idaho is PM2.5.
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 5.424 μg/m3.
The current PM10 concentration at Caldwell, Idaho is 23.954 μg/m3.
The current carbon monoxide (CO) concentration at Caldwell, Idaho is 0.271 ppm.
The current sulfur dioxide (SO2) concentration at Caldwell, Idaho is 1.064 ppb.
The current ozone (O3) concentration at Caldwell, Idaho is 16.814 ppm.
The current nitrogen dioxide (NO2) concentration at Caldwell, Idaho is 14.017 ppb.
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