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)
38
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)
3.18 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
11.52 μg/m³
0
55
155
255
425
605+
Ozone (O3)
40.73 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.60 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
2.30 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Caldwell, Idaho
Caldwell, Idaho
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Air quality in nearby cities
Middleton, Idaho
AQI 32
Good
4.16μg/m³
PM2.5
18.04μg/m³
PM10
35.23ppb
O3
0.09ppb
SO2
2.72ppb
NO2
0.14ppm
CO
Nampa, Idaho
AQI 32
Good
4.58μg/m³
PM2.5
20.07μg/m³
PM10
34.58ppb
O3
0.10ppb
SO2
2.92ppb
NO2
0.15ppm
CO
Star, Idaho
AQI 32
Good
5.17μg/m³
PM2.5
22.02μg/m³
PM10
35.34ppb
O3
0.11ppb
SO2
3.12ppb
NO2
0.15ppm
CO
Meridian, Idaho
AQI 52
Moderate
9.51μg/m³
PM2.5
42.45μg/m³
PM10
32.33ppb
O3
0.15ppb
SO2
3.89ppb
NO2
0.15ppm
CO
Eagle, Idaho
AQI 37
Good
6.43μg/m³
PM2.5
28.40μg/m³
PM10
39.54ppb
O3
0.13ppb
SO2
3.35ppb
NO2
0.15ppm
CO
Kuna, Idaho
AQI 52
Moderate
9.93μg/m³
PM2.5
43.80μg/m³
PM10
33.20ppb
O3
0.13ppb
SO2
3.50ppb
NO2
0.15ppm
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 02:00:00 on 2026-04-24.
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 02:00:00 on 2026-04-23.
What is the current air quality in Caldwell, Idaho?
The current air quality in Caldwell, Idaho is 38, 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 1.839 μg/m3.
What is the current concentration of PM10 in Caldwell, Idaho?
The current PM10 concentration at Caldwell, Idaho is 8.348 μg/m3.
What is the current concentration of carbon monoxide (CO) in Caldwell, Idaho?
The current carbon monoxide (CO) concentration at Caldwell, Idaho is 0.26 ppm.
What is the current concentration of sulfur dioxide (SO2) in Caldwell, Idaho?
The current sulfur dioxide (SO2) concentration at Caldwell, Idaho is 0.442 ppb.
What is the current concentration of ozone (O3) in Caldwell, Idaho?
The current ozone (O3) concentration at Caldwell, Idaho is 41.447 ppm.
What is the current concentration of nitrogen dioxide (NO2) in Caldwell, Idaho?
The current nitrogen dioxide (NO2) concentration at Caldwell, Idaho is 2.234 ppb.
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