Hourly Weather | Today Wednesday, March 18, 2026
Boise, Idaho
8 AM
Cloudy Weather
43°
Feels Like 39°
0
Humidity: 71%
UV Index: 1
Wind: 7 mph
9 AM
Cloudy Weather
46°
Feels Like 45°
0
Humidity: 56%
UV Index: 2
Wind: 8 mph
10 AM
Cloudy Weather
52°
Feels Like 54°
0
Humidity: 45%
UV Index: 3
Wind: 7 mph
11 AM
Cloudy Weather
57°
Feels Like 61°
0
Humidity: 40%
UV Index: 4
Wind: 7 mph
12 PM
Cloudy Weather
64°
Feels Like 70°
0
Humidity: 32%
UV Index: 4
Wind: 7 mph
1 PM
Cloudy Weather
72°
Feels Like 75°
0
Humidity: 25%
UV Index: 5
Wind: 7 mph
2 PM
Cloudy Weather
75°
Feels Like 79°
0
Humidity: 22%
UV Index: 4
Wind: 7 mph
3 PM
Cloudy Weather
75°
Feels Like 79°
0
Humidity: 20%
UV Index: 4
Wind: 7 mph
4 PM
Cloudy Weather
79°
Feels Like 79°
0
Humidity: 18%
UV Index: 3
Wind: 6 mph
5 PM
Cloudy Weather
79°
Feels Like 79°
0
Humidity: 17%
UV Index: 2
Wind: 6 mph
6 PM
Cloudy Weather
77°
Feels Like 75°
0
Humidity: 18%
UV Index: 1
Wind: 6 mph
7 PM
Cloudy Weather
75°
Feels Like 73°
0
Humidity: 19%
UV Index: 0
Wind: 7 mph
8 PM
Night
72°
Feels Like 70°
0
Humidity: 22%
UV Index: 0
Wind: 7 mph
9 PM
Night
68°
Feels Like 66°
0
Humidity: 25%
UV Index: 0
Wind: 7 mph
10 PM
Night
64°
Feels Like 63°
0
Humidity: 28%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 31%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 0.63 µg/m³
  • PM10: 1.87 µg/m³
  • O3: 0.023 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.64 µg/m³
  • PM10: 1.85 µg/m³
  • O3: 0.022 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.65 µg/m³
  • PM10: 1.82 µg/m³
  • O3: 0.021 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.66 µg/m³
  • PM10: 1.86 µg/m³
  • O3: 0.022 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.69 µg/m³
  • PM10: 1.95 µg/m³
  • O3: 0.024 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.09 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: 0.72 µg/m³
  • PM10: 1.46 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.69 µg/m³
  • PM10: 1.16 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.62 µg/m³
  • PM10: 1.01 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.58 µg/m³
  • PM10: 0.93 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.55 µg/m³
  • PM10: 0.89 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.54 µg/m³
  • PM10: 0.89 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.67 µg/m³
  • PM10: 1.04 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.79 µg/m³
  • PM10: 1.2 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.82 µg/m³
  • PM10: 1.27 µg/m³
  • O3: 0.035 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.83 µg/m³
  • PM10: 1.31 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.87 µg/m³
  • PM10: 1.39 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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