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Hourly Weather | Today › Wednesday, August 12, 2026
Active Weather Warnings
Caldwell, Idaho
6 AM
Cloudy Night
66°
Feels Like 63°
0
Humidity: 45%
UV Index: 0
Wind: 9 mph
7 AM
Cloudy Weather
64°
Feels Like 63°
0
Humidity: 47%
UV Index: 1
Wind: 9 mph
8 AM
Cloudy Weather
70°
Feels Like 68°
0
Humidity: 44%
UV Index: 2
Wind: 9 mph
9 AM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 40%
UV Index: 3
Wind: 9 mph
10 AM
Cloudy Weather
77°
Feels Like 79°
0
Humidity: 35%
UV Index: 4
Wind: 9 mph
11 AM
Cloudy Weather
81°
Feels Like 84°
0
Humidity: 30%
UV Index: 6
Wind: 9 mph
12 PM
Cloudy Weather
84°
Feels Like 90°
0
Humidity: 27%
UV Index: 7
Wind: 8 mph
1 PM
Cloudy Weather
88°
Feels Like 93°
0
Humidity: 24%
UV Index: 8
Wind: 8 mph
2 PM
Cloudy Weather
90°
Feels Like 95°
0
Humidity: 21%
UV Index: 7
Wind: 8 mph
3 PM
Cloudy Weather
91°
Feels Like 97°
0
Humidity: 20%
UV Index: 6
Wind: 7 mph
4 PM
Cloudy Weather
93°
Feels Like 97°
0
Humidity: 19%
UV Index: 4
Wind: 7 mph
5 PM
Cloudy Weather
95°
Feels Like 97°
0
Humidity: 17%
UV Index: 3
Wind: 7 mph
6 PM
Cloudy Weather
93°
Feels Like 93°
0
Humidity: 18%
UV Index: 2
Wind: 7 mph
7 PM
Cloudy Weather
91°
Feels Like 91°
0
Humidity: 19%
UV Index: 1
Wind: 7 mph
8 PM
Cloudy Weather
90°
Feels Like 88°
0
Humidity: 21%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
84°
Feels Like 82°
0
Humidity: 26%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
81°
Feels Like 79°
0
Humidity: 30%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
79°
Feels Like 75°
0
Humidity: 35%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
117 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 42.03 µg/m³
  • PM10: 43.23 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.15 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

7 AM
115 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 41.42 µg/m³
  • PM10: 42.58 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.15 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

8 AM
111 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 39.98 µg/m³
  • PM10: 41.15 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.1 ppb
  • SO2: 0 ppb
  • CO: 0.15 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

9 AM
106 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 37.91 µg/m³
  • PM10: 39.12 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.1 ppb
  • SO2: 0 ppb
  • CO: 0.15 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

10 AM
102 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 36.25 µg/m³
  • PM10: 37.54 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

11 AM
104 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 36.84 µg/m³
  • PM10: 38.15 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

12 PM
116 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 41.83 µg/m³
  • PM10: 43.14 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

1 PM
138 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 50.63 µg/m³
  • PM10: 51.66 µg/m³
  • O3: 0.064 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

2 PM
119 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 43.07 µg/m³
  • PM10: 44.06 µg/m³
  • O3: 0.065 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

3 PM
110 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 39.23 µg/m³
  • PM10: 40.22 µg/m³
  • O3: 0.064 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

4 PM
108 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 38.61 µg/m³
  • PM10: 39.59 µg/m³
  • O3: 0.064 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

5 PM
109 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 39.16 µg/m³
  • PM10: 40.09 µg/m³
  • O3: 0.063 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

6 PM
111 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 39.81 µg/m³
  • PM10: 40.69 µg/m³
  • O3: 0.063 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

7 PM
117 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 42.22 µg/m³
  • PM10: 43.07 µg/m³
  • O3: 0.062 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

8 PM
127 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 46.31 µg/m³
  • PM10: 47.18 µg/m³
  • O3: 0.061 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

9 PM
135 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 49.56 µg/m³
  • PM10: 50.46 µg/m³
  • O3: 0.060 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

10 PM
137 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 50.19 µg/m³
  • PM10: 51.12 µg/m³
  • O3: 0.058 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

11 PM
135 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 49.36 µg/m³
  • PM10: 50.34 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Caldwell

Air Quality Alert

Air Quality Alert issued August 10 at 8:40PM MDT by NWS Boise ID
Aug 10, 8:40 PM → Aug 12, 12:00 PM
WHAT: Air Quality Advisory because of degraded air quality due to
wildfire smoke.

Air Quality Index is forecast to be Unhealthy.

WHERE: Ada, Adams, Canyon, Gem, Owyhee, Payette,and Washington
Counties.

WHEN: UNTIL 1 PM MDT WEDNESDAY.

IMPACTS: Everyone may begin to experience health effects; members
of sensitive groups may experience more serious health effects.
+ Read More
Air pollutants can cause breathing difficulties for children, the elderly, as well as persons with respiratory problems. Those individuals who are sensitive to increased particulate matter or smoke are encouraged to avoid prolonged or strenuous outdoor activity during this advisory. Open burning is prohibited by air quality rule. It is also recommended that all other individuals limit prolonged or strenuous activity outdoors. THIS STATEMENT IS ISSUED BY THE IDAHO DEPARTMENT OF ENVIRONMENTAL QUALITY, AIR QUALITY GROUP FOR MORE INFORMATION, CONTACT DEQ's Boise Regional Office at (208) 373-0550 Twin Falls Regional Office at (208) 736-2190
Updated: Aug 12, 4:46 AM Source: NWS Alert

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