Hourly Weather | Today Tuesday, July 21, 2026
Active Weather Warnings
Yakima, Washington
1 AM
Cloudy Night
75°
Feels Like 73°
0
Humidity: 48%
UV Index: 0
Wind: 6 mph
2 AM
Cloudy Night
73°
Feels Like 72°
0
Humidity: 51%
UV Index: 0
Wind: 6 mph
3 AM
Night
72°
Feels Like 70°
0
Humidity: 55%
UV Index: 0
Wind: 6 mph
4 AM
Night
70°
Feels Like 66°
0
Humidity: 59%
UV Index: 0
Wind: 6 mph
5 AM
Night
66°
Feels Like 64°
0
Humidity: 63%
UV Index: 0
Wind: 6 mph
6 AM
Sunny Weather
64°
Feels Like 64°
0
Humidity: 66%
UV Index: 0
Wind: 6 mph
7 AM
Sunny Weather
70°
Feels Like 70°
0
Humidity: 56%
UV Index: 1
Wind: 6 mph
8 AM
Cloudy Weather
75°
Feels Like 77°
0
Humidity: 46%
UV Index: 2
Wind: 6 mph
9 AM
Cloudy Weather
81°
Feels Like 84°
0
Humidity: 37%
UV Index: 3
Wind: 6 mph
10 AM
Cloudy Weather
88°
Feels Like 91°
0
Humidity: 30%
UV Index: 5
Wind: 5 mph
11 AM
Cloudy Weather
91°
Feels Like 99°
0
Humidity: 25%
UV Index: 6
Wind: 5 mph
12 PM
Cloudy Weather
93°
Feels Like 100°
0
Humidity: 22%
UV Index: 8
Wind: 5 mph
1 PM
Cloudy Weather
97°
Feels Like 102°
0
Humidity: 20%
UV Index: 9
Wind: 6 mph
2 PM
Cloudy Weather
99°
Feels Like 106°
0
Humidity: 18%
UV Index: 8
Wind: 7 mph
3 PM
Cloudy Weather
100°
Feels Like 106°
0
Humidity: 17%
UV Index: 6
Wind: 7 mph
4 PM
Cloudy Weather
102°
Feels Like 106°
0
Humidity: 17%
UV Index: 5
Wind: 7 mph
5 PM
Cloudy Weather
102°
Feels Like 102°
0
Humidity: 17%
UV Index: 3
Wind: 7 mph
6 PM
Cloudy Weather
100°
Feels Like 100°
0
Humidity: 18%
UV Index: 2
Wind: 7 mph
7 PM
Cloudy Weather
99°
Feels Like 97°
0
Humidity: 21%
UV Index: 1
Wind: 8 mph
8 PM
Cloudy Weather
97°
Feels Like 93°
0
Humidity: 24%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Weather
91°
Feels Like 88°
0
Humidity: 29%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Weather
88°
Feels Like 84°
0
Humidity: 33%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
84°
Feels Like 82°
0
Humidity: 37%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
162 AQI
Unhealthy air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 78.26 µg/m³
  • PM10: 78.99 µg/m³
  • O3: 0.041 ppm
  • NO2: 4.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.38 ppm

Health Recommendations:

Everyone may begin to experience health effects; sensitive groups may experience more serious effects.

2 AM
159 AQI
Unhealthy air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 72.72 µg/m³
  • PM10: 73.47 µg/m³
  • O3: 0.038 ppm
  • NO2: 4.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.36 ppm

Health Recommendations:

Everyone may begin to experience health effects; sensitive groups may experience more serious effects.

3 AM
156 AQI
Unhealthy air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 66.19 µg/m³
  • PM10: 66.94 µg/m³
  • O3: 0.035 ppm
  • NO2: 3.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.33 ppm

Health Recommendations:

Everyone may begin to experience health effects; sensitive groups may experience more serious effects.

4 AM
153 AQI
Unhealthy air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 62.01 µg/m³
  • PM10: 62.77 µg/m³
  • O3: 0.033 ppm
  • NO2: 3.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.31 ppm

Health Recommendations:

Everyone may begin to experience health effects; sensitive groups may experience more serious effects.

5 AM
152 AQI
Unhealthy air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 59.02 µg/m³
  • PM10: 59.78 µg/m³
  • O3: 0.031 ppm
  • NO2: 3.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.29 ppm

Health Recommendations:

Everyone may begin to experience health effects; sensitive groups may experience more serious effects.

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

Pollutant Concentrations:

  • PM2.5: 54.45 µg/m³
  • PM10: 55.22 µg/m³
  • O3: 0.029 ppm
  • NO2: 3.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 49.92 µg/m³
  • PM10: 50.69 µg/m³
  • O3: 0.027 ppm
  • NO2: 4.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 46.82 µg/m³
  • PM10: 47.6 µg/m³
  • O3: 0.026 ppm
  • NO2: 5.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 44.91 µg/m³
  • PM10: 45.71 µg/m³
  • O3: 0.029 ppm
  • NO2: 5.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 44.67 µg/m³
  • PM10: 45.46 µg/m³
  • O3: 0.037 ppm
  • NO2: 4.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 46.12 µg/m³
  • PM10: 46.9 µg/m³
  • O3: 0.053 ppm
  • NO2: 2.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

12 PM
151 AQI
Unhealthy air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 56.56 µg/m³
  • PM10: 57.02 µg/m³
  • O3: 0.077 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.27 ppm

Health Recommendations:

Everyone may begin to experience health effects; sensitive groups may experience more serious effects.

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

Pollutant Concentrations:

  • PM2.5: 47.79 µg/m³
  • PM10: 48.1 µg/m³
  • O3: 0.072 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 42.65 µg/m³
  • PM10: 42.94 µg/m³
  • O3: 0.069 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 40.31 µg/m³
  • PM10: 40.6 µg/m³
  • O3: 0.068 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 39.41 µg/m³
  • PM10: 39.69 µg/m³
  • O3: 0.067 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 39.24 µg/m³
  • PM10: 39.54 µg/m³
  • O3: 0.068 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 39.24 µg/m³
  • PM10: 39.58 µg/m³
  • O3: 0.071 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

7 PM
106 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 37.45 µg/m³
  • PM10: 37.85 µg/m³
  • O3: 0.072 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

8 PM
103 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 34.33 µg/m³
  • PM10: 34.78 µg/m³
  • O3: 0.071 ppm
  • NO2: 0.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

9 PM
90 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 30.58 µg/m³
  • PM10: 31.09 µg/m³
  • O3: 0.066 ppm
  • NO2: 1.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

10 PM
83 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 27.52 µg/m³
  • PM10: 28.08 µg/m³
  • O3: 0.059 ppm
  • NO2: 1.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

11 PM
79 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 25.64 µg/m³
  • PM10: 26.24 µg/m³
  • O3: 0.052 ppm
  • NO2: 1.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Yakima

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued July 20 at 5:54AM PDT until July 23 at 9:00PM PDT by NWS Pendleton OR
Jul 21, 11:00 AM Jul 23, 9:00 PM
WHAT: Dangerously hot conditions with temperatures 100 to 102
degrees, and 101 to 105 in the Columbia Basin possible. This will
pose a moderate to major risk of heat-related illness.

WHERE: Eastern Columbia River Gorge of Oregon and Washington,
Lower Columbia Basin of Oregon and Washington, Foothills of the
Northern Blue Mountains of Oregon, Yakima Valley, and Foothills of
the Blue Mountains of Washington.

WHEN: From Tuesday morning through Thursday evening.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events.

ADDITIONAL DETAILS: The heat will begin on Tuesday, with
widespread moderate and locally major HeatRisk.

Wednesday looks to be the hottest day, with Major HeatRisk across
the Columbia Basin, Yakima Valley and portions of the Gorge and Blue
Mountain Foothills.

Thursday will also see widespread moderate HeatRisk and locally
major HeatRisk, mainly across the Columbia Basin.
+ Read More
Monitor the latest forecasts and warnings for updates on this situation. Be prepared to drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes.
Updated: Jul 20, 2:27 PM Source: NWS Alert
Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 20 at 3:16PM PDT until July 23 at 9:00PM PDT by NWS Pendleton OR
Jul 21, 11:00 AM Jul 23, 9:00 PM
WHAT: Hot conditions with temperatures up to 100 to 103 degrees
expected, with 101 to 105 degrees in the Columbia Basin. This
will pose a moderate to major risk of heat-related illness.

WHERE: Eastern Columbia River Gorge of Oregon and Washington,
Lower Columbia Basin of Oregon and Washington, Foothills of the
Northern Blue Mountains of Oregon, Yakima Valley, and Foothills of
the Blue Mountains of Washington.

WHEN: From 11 AM Tuesday to 9 PM PDT Thursday.

IMPACTS: Hot temperatures may cause heat illnesses.

ADDITIONAL DETAILS: The heat will begin on Tuesday, with
widespread moderate and locally major HeatRisk.

Wednesday looks to be the hottest day, with Major HeatRisk across
the Columbia Basin, Yakima Valley and portions of the Gorge and Blue
Mountain Foothills.

Thursday will also see widespread moderate HeatRisk and locally
major HeatRisk, mainly across the Columbia Basin.

Smoke from area wildfires could end up affecting how hot
temperatures get.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. For sheltering information and other human services in your area, dial 2 1 1 during business hours or visit 211info.org for Oregon or wa211.org for Washington anytime.
Updated: Jul 20, 11:33 PM Source: NWS Alert