Hourly Weather | Today Monday, April 27, 2026
Caldwell, Idaho
3 PM
Cloudy Weather
63°
Feels Like 66°
1
Humidity: 26%
UV Index: 5
Wind: 8 mph
4 PM
Cloudy Weather
63°
Feels Like 64°
1
Humidity: 27%
UV Index: 3
Wind: 8 mph
5 PM
Cloudy Weather
63°
Feels Like 63°
1
Humidity: 29%
UV Index: 2
Wind: 9 mph
6 PM
Cloudy Weather
61°
Feels Like 59°
1
Humidity: 32%
UV Index: 1
Wind: 9 mph
7 PM
Cloudy Weather
59°
Feels Like 57°
1
Humidity: 35%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Weather
57°
Feels Like 54°
0
Humidity: 39%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
54°
Feels Like 52°
0
Humidity: 47%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
52°
Feels Like 48°
0
Humidity: 54%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
48°
Feels Like 46°
0
Humidity: 61%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

3 PM
63 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.58 µg/m³
  • PM10: 1.09 µg/m³
  • O3: 0.058 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
64 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.52 µg/m³
  • PM10: 0.96 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
65 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.87 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
65 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.8 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
64 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.75 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
64 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.71 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM
63 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.66 µg/m³
  • O3: 0.058 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.68 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.74 µg/m³
  • O3: 0.049 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.