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)
58
Moderate
Caldwell, Idaho
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
12.79 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
50.61 μg/m³
0
55
155
255
425
605+
23.99 ppb
0
55
71
86
201
201+
0.59 ppb
0
36
76
186
605
1005+
21.18 ppb
0
54
101
361
1250
2050+
0.64 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Caldwell, Idaho
Caldwell, Idaho
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AQI 60
Moderate
14.27μg/m³
PM2.5
42.95μg/m³
PM10
23.70ppb
O3
0.59ppb
SO2
20.71ppb
NO2
0.64ppm
CO
AQI 58
Moderate
12.55μg/m³
PM2.5
55.87μg/m³
PM10
10.10ppb
O3
0.60ppb
SO2
22.76ppb
NO2
0.64ppm
CO
AQI 62
Moderate
15.03μg/m³
PM2.5
39.28μg/m³
PM10
20.00ppb
O3
0.59ppb
SO2
23.58ppb
NO2
0.64ppm
CO
AQI 76
Moderate
16.60μg/m³
PM2.5
105.33μg/m³
PM10
14.20ppb
O3
0.59ppb
SO2
27.16ppb
NO2
0.64ppm
CO
AQI 64
Moderate
16.11μg/m³
PM2.5
77.19μg/m³
PM10
11.08ppb
O3
0.59ppb
SO2
26.26ppb
NO2
0.56ppm
CO
AQI 63
Moderate
14.10μg/m³
PM2.5
80.27μg/m³
PM10
13.85ppb
O3
0.60ppb
SO2
26.59ppb
NO2
0.64ppm
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 10:00:00 on 2026-01-22.
In the last 24 hrs, the best air quality in Caldwell, Idaho was observed at 09:00:00 on 2026-01-22.
The current air quality in Caldwell, Idaho is 58, categorized as Moderate 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 12.785 μg/m3.
The current PM10 concentration at Caldwell, Idaho is 50.613 μg/m3.
The current carbon monoxide (CO) concentration at Caldwell, Idaho is 0.641 ppm.
The current sulfur dioxide (SO2) concentration at Caldwell, Idaho is 0.594 ppb.
The current ozone (O3) concentration at Caldwell, Idaho is 23.993 ppm.
The current nitrogen dioxide (NO2) concentration at Caldwell, Idaho is 21.18 ppb.
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