Hourly Weather | Today Thursday, February 26, 2026
Caldwell, Idaho
1 AM
Cloudy Night
37°
Feels Like 34°
0
Humidity: 73%
UV Index: 0
Wind: 6 mph
2 AM
Cloudy Night
36°
Feels Like 32°
0
Humidity: 73%
UV Index: 0
Wind: 6 mph
3 AM
Cloudy Night
34°
Feels Like 30°
0
Humidity: 76%
UV Index: 0
Wind: 6 mph
4 AM
Cloudy Night
32°
Feels Like 28°
0
Humidity: 79%
UV Index: 0
Wind: 6 mph
5 AM
Cloudy Night
30°
Feels Like 28°
0
Frost Risk: 69%
Humidity: 82%
UV Index: 0
Wind: 4 mph
6 AM
Cloudy Night
28°
Feels Like 27°
0
Frost Risk: 97%
Humidity: 86%
UV Index: 0
Wind: 4 mph
7 AM
Night
27°
Feels Like 25°
0
Frost Risk: 100%
Humidity: 94%
UV Index: 0
Wind: 4 mph
8 AM
Sunny Weather
28°
Feels Like 30°
0
Frost Risk: 98%
Humidity: 86%
UV Index: 1
Wind: 4 mph
9 AM
Sunny Weather
32°
Feels Like 37°
0
Humidity: 75%
UV Index: 2
Wind: 4 mph
10 AM
Cloudy Weather
39°
Feels Like 45°
0
Humidity: 62%
UV Index: 3
Wind: 4 mph
11 AM
Cloudy Weather
43°
Feels Like 50°
0
Humidity: 53%
UV Index: 3
Wind: 4 mph
12 PM
Cloudy Weather
46°
Feels Like 55°
0
Humidity: 48%
UV Index: 4
Wind: 4 mph
1 PM
Cloudy Weather
50°
Feels Like 57°
0
Humidity: 44%
UV Index: 3
Wind: 4 mph
2 PM
Sunny Weather
52°
Feels Like 57°
0
Humidity: 40%
UV Index: 3
Wind: 4 mph
3 PM
Sunny Weather
55°
Feels Like 57°
0
Humidity: 37%
UV Index: 2
Wind: 6 mph
4 PM
Cloudy Weather
57°
Feels Like 57°
0
Humidity: 35%
UV Index: 1
Wind: 6 mph
5 PM
Cloudy Weather
55°
Feels Like 54°
0
Humidity: 37%
UV Index: 0
Wind: 7 mph
6 PM
Cloudy Weather
52°
Feels Like 50°
0
Humidity: 42%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Night
48°
Feels Like 46°
0
Humidity: 48%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
46°
Feels Like 43°
0
Humidity: 54%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
43°
Feels Like 41°
0
Humidity: 60%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
39°
Feels Like 37°
0
Humidity: 67%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
37°
Feels Like 36°
0
Humidity: 71%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.58 µg/m³
  • PM10: 1.17 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.2 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 AM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.65 µg/m³
  • PM10: 1.31 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.2 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 AM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.68 µg/m³
  • PM10: 1.48 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.1 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 AM
23 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.68 µg/m³
  • PM10: 1.66 µg/m³
  • O3: 0.025 ppm
  • NO2: 1 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.69 µg/m³
  • PM10: 1.8 µg/m³
  • O3: 0.026 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.72 µg/m³
  • PM10: 1.93 µg/m³
  • O3: 0.026 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.78 µg/m³
  • PM10: 2.07 µg/m³
  • O3: 0.026 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.82 µg/m³
  • PM10: 2.15 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.1 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 AM
23 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.78 µg/m³
  • PM10: 2.09 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.2 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.65 µg/m³
  • PM10: 1.95 µg/m³
  • O3: 0.026 ppm
  • NO2: 1 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.59 µg/m³
  • PM10: 1.93 µg/m³
  • O3: 0.029 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

12 PM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.6 µg/m³
  • PM10: 1.91 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.62 µg/m³
  • PM10: 1.75 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.66 µg/m³
  • PM10: 1.65 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.72 µg/m³
  • PM10: 1.54 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.76 µg/m³
  • PM10: 1.44 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.79 µg/m³
  • PM10: 1.41 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.86 µg/m³
  • PM10: 1.5 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.96 µg/m³
  • PM10: 1.65 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.05 µg/m³
  • PM10: 1.78 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.09 µg/m³
  • PM10: 1.83 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.11 µg/m³
  • PM10: 1.86 µg/m³
  • O3: 0.036 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.13 µg/m³
  • PM10: 1.89 µg/m³
  • O3: 0.035 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.