Hourly Weather | Today Tuesday, July 21, 2026
Active Weather Warnings
Olympia, Washington
2 AM
Cloudy Night
63°
Feels Like 64°
0
Humidity: 86%
UV Index: 0
Wind: 1 mph
3 AM
Cloudy Night
61°
Feels Like 63°
0
Humidity: 91%
UV Index: 0
Wind: 1 mph
4 AM
Cloudy Night
59°
Feels Like 61°
0
Humidity: 96%
UV Index: 0
Wind: 1 mph
5 AM
Cloudy Night
57°
Feels Like 59°
0
Humidity: 100%
UV Index: 0
Wind: 1 mph
6 AM
Cloudy Weather
59°
Feels Like 63°
0
Humidity: 97%
UV Index: 0
Wind: 1 mph
7 AM
Cloudy Weather
63°
Feels Like 68°
0
Humidity: 88%
UV Index: 1
Wind: 1 mph
8 AM
Cloudy Weather
68°
Feels Like 70°
0
Humidity: 75%
UV Index: 2
Wind: 2 mph
9 AM
Cloudy Weather
72°
Feels Like 77°
0
Humidity: 64%
UV Index: 3
Wind: 4 mph
10 AM
Cloudy Weather
75°
Feels Like 82°
0
Humidity: 56%
UV Index: 4
Wind: 4 mph
11 AM
Cloudy Weather
79°
Feels Like 86°
0
Humidity: 50%
UV Index: 6
Wind: 4 mph
12 PM
Cloudy Weather
82°
Feels Like 91°
0
Humidity: 45%
UV Index: 8
Wind: 4 mph
1 PM
Cloudy Weather
86°
Feels Like 95°
0
Humidity: 41%
UV Index: 8
Wind: 4 mph
2 PM
Cloudy Weather
88°
Feels Like 97°
0
Humidity: 37%
UV Index: 8
Wind: 6 mph
3 PM
Cloudy Weather
91°
Feels Like 97°
0
Humidity: 34%
UV Index: 6
Wind: 6 mph
4 PM
Cloudy Weather
91°
Feels Like 95°
0
Humidity: 32%
UV Index: 4
Wind: 6 mph
5 PM
Cloudy Weather
95°
Feels Like 97°
0
Humidity: 29%
UV Index: 3
Wind: 6 mph
6 PM
Cloudy Weather
93°
Feels Like 93°
0
Humidity: 31%
UV Index: 2
Wind: 6 mph
7 PM
Cloudy Weather
91°
Feels Like 91°
0
Humidity: 34%
UV Index: 1
Wind: 6 mph
8 PM
Cloudy Weather
88°
Feels Like 86°
0
Humidity: 39%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
82°
Feels Like 81°
0
Humidity: 47%
UV Index: 0
Wind: 4 mph
10 PM
Cloudy Night
79°
Feels Like 77°
0
Humidity: 56%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
73°
Feels Like 72°
0
Humidity: 68%
UV Index: 0
Wind: 2 mph

Hourly Air Quality Forecast - AQI (US EPA)

2 AM
23 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.53 µg/m³
  • PM10: 10.74 µg/m³
  • O3: 0.021 ppm
  • NO2: 1.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

3 AM
23 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.4 µg/m³
  • PM10: 10.44 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

4 AM
22 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.26 µg/m³
  • PM10: 10.07 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

5 AM
22 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.16 µg/m³
  • PM10: 9.67 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.07 µg/m³
  • PM10: 9.27 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.95 µg/m³
  • PM10: 8.83 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.83 µg/m³
  • PM10: 8.38 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 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: 4.69 µg/m³
  • PM10: 7.68 µg/m³
  • O3: 0.025 ppm
  • NO2: 2.7 ppb
  • SO2: 0.2 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: 4.54 µg/m³
  • PM10: 7.09 µg/m³
  • O3: 0.026 ppm
  • NO2: 2.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.4 µg/m³
  • PM10: 6.68 µg/m³
  • O3: 0.027 ppm
  • NO2: 2.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.68 µg/m³
  • PM10: 6.72 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.18 µg/m³
  • PM10: 7.2 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.79 µg/m³
  • PM10: 8.02 µg/m³
  • O3: 0.040 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.27 µg/m³
  • PM10: 8.96 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.38 µg/m³
  • PM10: 9.49 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.31 µg/m³
  • PM10: 9.65 µg/m³
  • O3: 0.042 ppm
  • NO2: 1 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.13 µg/m³
  • PM10: 9.72 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.88 µg/m³
  • PM10: 9.66 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.6 µg/m³
  • PM10: 9.31 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.29 µg/m³
  • PM10: 8.73 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.14 µg/m³
  • PM10: 8.54 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5 µg/m³
  • PM10: 8.38 µg/m³
  • O3: 0.024 ppm
  • NO2: 2 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Olympia

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 20 at 8:49PM PDT until July 22 at 11:00PM PDT by NWS Seattle WA
Jul 21, 10:00 AM Jul 22, 11:00 PM
WHAT: Hot conditions with high temperatures up to 96 degrees
expected and low temperatures 60 to 65 degrees. This will pose a
moderate to major risk of heat-related illness.

WHERE: Foothills of the Western and Southern Olympic Peninsula,
Middle Chehalis River Valley, Southern Hood Canal, Foothills and
Valleys of Thurston and Lewis Counties, Lowlands of Lewis and
Southern Thurston Counties, and Olympia and Southern Puget Sound.

WHEN: From 10 AM Tuesday to 11 PM PDT Wednesday.

IMPACTS: Heat will significantly increase the risk of
heat-related illnesses for those who are sensitive to heat,
especially those without effective cooling or adequate hydration.
+ 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 wa211.org anytime.
Updated: Jul 21, 1:03 AM Source: NWS Alert