Caldwell, Idaho live air quality index now
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)
Major air pollutants in Caldwell, Idaho
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
6.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
43.57 μg/m³
0
55
155
255
425
605+
Ozone (O3)
33.83 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
1.38 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
3.47 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Caldwell, Idaho
Caldwell, Idaho
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Air quality in nearby cities
Middleton, Idaho
AQI 27
Good
3.52μg/m³
PM2.5
17.37μg/m³
PM10
28.82ppb
O3
0.79ppb
SO2
4.89ppb
NO2
0.16ppm
CO
Nampa, Idaho
AQI 27
Good
4.44μg/m³
PM2.5
19.76μg/m³
PM10
28.61ppb
O3
0.72ppb
SO2
3.85ppb
NO2
0.14ppm
CO
Star, Idaho
AQI 28
Good
3.57μg/m³
PM2.5
15.94μg/m³
PM10
30.31ppb
O3
0.73ppb
SO2
3.84ppb
NO2
0.14ppm
CO
Meridian, Idaho
AQI 31
Good
2.18μg/m³
PM2.5
16.56μg/m³
PM10
32.87ppb
O3
0.62ppb
SO2
3.98ppb
NO2
0.11ppm
CO
Eagle, Idaho
AQI 29
Good
2.73μg/m³
PM2.5
17.33μg/m³
PM10
30.70ppb
O3
0.66ppb
SO2
3.95ppb
NO2
0.12ppm
CO
Kuna, Idaho
AQI 29
Good
3.44μg/m³
PM2.5
19.14μg/m³
PM10
30.86ppb
O3
0.68ppb
SO2
3.91ppb
NO2
0.13ppm
CO
How accurate is Idaho, USA air quality data?
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
Frequently asked questions
How often is the air quality data for Caldwell, Idaho updated?
The air quality for Caldwell, Idaho is updated every hour.
When was the worst air quality at Caldwell, Idaho in the last 24 hrs?
The worst air quality in Caldwell, Idaho in the last 24 hours was observed at 07:00:00 on 2025-07-20.
When was the best air quality at Caldwell, Idaho in the last 24 hrs?
In the last 24 hrs, the best air quality in Caldwell, Idaho was observed at 09:00:00 on 2025-07-21.
What is the current air quality in Caldwell, Idaho?
The current air quality in Caldwell, Idaho is 26, categorized as Good based on real-time data.
What pollutant is the most common in Caldwell, Idaho?
The most common pollutant in Caldwell, Idaho is O3.
What should I do if the air quality in Caldwell, Idaho is poor?
If the air quality in Caldwell, Idaho is poor, consider staying indoors and wearing a mask to protect yourself.
What is the current concentration of PM2.5 in Caldwell, Idaho?
The current PM2.5 concentration at Caldwell, Idaho is 3.51 μg/m3.
What is the current concentration of PM10 in Caldwell, Idaho?
The current PM10 concentration at Caldwell, Idaho is 18.85 μg/m3.
What is the current concentration of carbon monoxide (CO) in Caldwell, Idaho?
The current carbon monoxide (CO) concentration at Caldwell, Idaho is 0.169 ppm.
What is the current concentration of sulfur dioxide (SO2) in Caldwell, Idaho?
The current sulfur dioxide (SO2) concentration at Caldwell, Idaho is 0.805 ppb.
What is the current concentration of ozone (O3) in Caldwell, Idaho?
The current ozone (O3) concentration at Caldwell, Idaho is 28.498 ppm.
What is the current concentration of nitrogen dioxide (NO2) in Caldwell, Idaho?
The current nitrogen dioxide (NO2) concentration at Caldwell, Idaho is 5.081 ppb.
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