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)
41
Good
Caldwell, Idaho
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
43.57 μg/m³
0
55
155
255
425
605+
33.83 ppb
0
55
71
86
201
201+
1.38 ppb
0
36
76
186
605
1005+
3.47 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Caldwell, Idaho
Caldwell, Idaho
Scroll To Air Quality MapLoading...
AQI 27
Good
3.52μg/m³
PM2.5
17.37μg/m³
PM10
28.82ppb
O3
0.79ppb
SO2
4.89ppb
NO2
0.16ppm
CO
AQI 27
Good
4.44μg/m³
PM2.5
19.76μg/m³
PM10
28.61ppb
O3
0.72ppb
SO2
3.85ppb
NO2
0.14ppm
CO
AQI 28
Good
3.57μg/m³
PM2.5
15.94μg/m³
PM10
30.31ppb
O3
0.73ppb
SO2
3.84ppb
NO2
0.14ppm
CO
AQI 31
Good
2.18μg/m³
PM2.5
16.56μg/m³
PM10
32.87ppb
O3
0.62ppb
SO2
3.98ppb
NO2
0.11ppm
CO
AQI 29
Good
2.73μg/m³
PM2.5
17.33μg/m³
PM10
30.70ppb
O3
0.66ppb
SO2
3.95ppb
NO2
0.12ppm
CO
AQI 29
Good
3.44μg/m³
PM2.5
19.14μg/m³
PM10
30.86ppb
O3
0.68ppb
SO2
3.91ppb
NO2
0.13ppm
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 07:00:00 on 2025-07-20.
In the last 24 hrs, the best air quality in Caldwell, Idaho was observed at 09:00:00 on 2025-07-21.
The current air quality in Caldwell, Idaho is 26, 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 3.51 μg/m3.
The current PM10 concentration at Caldwell, Idaho is 18.85 μg/m3.
The current carbon monoxide (CO) concentration at Caldwell, Idaho is 0.169 ppm.
The current sulfur dioxide (SO2) concentration at Caldwell, Idaho is 0.805 ppb.
The current ozone (O3) concentration at Caldwell, Idaho is 28.498 ppm.
The current nitrogen dioxide (NO2) concentration at Caldwell, Idaho is 5.081 ppb.
All Rights Reserved © Ambee Inc. 2025