Hourly Weather | Today Monday, September 21, 2026
Pasco, Washington
1 PM
Sunny Weather
79°
Feels Like 84°
0
Humidity: 33%
UV Index: 4
Wind: 5 mph
2 PM
Cloudy Weather
82°
Feels Like 86°
0
Humidity: 30%
UV Index: 4
Wind: 5 mph
3 PM
Cloudy Weather
84°
Feels Like 88°
0
Humidity: 27%
UV Index: 3
Wind: 5 mph
4 PM
Cloudy Weather
88°
Feels Like 88°
0
Humidity: 25%
UV Index: 2
Wind: 6 mph
5 PM
Cloudy Weather
84°
Feels Like 84°
0
Humidity: 27%
UV Index: 2
Wind: 6 mph
6 PM
Cloudy Weather
82°
Feels Like 81°
0
Humidity: 31%
UV Index: 1
Wind: 6 mph
7 PM
Cloudy Night
79°
Feels Like 77°
0
Humidity: 35%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
75°
Feels Like 73°
0
Humidity: 41%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 49%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 57%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 64%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.79 µg/m³
  • PM10: 4.28 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.89 µg/m³
  • PM10: 4.37 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.39 µg/m³
  • PM10: 3.54 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.3 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 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.01 µg/m³
  • PM10: 2.94 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.87 µg/m³
  • PM10: 2.72 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.9 µg/m³
  • PM10: 2.75 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.12 µg/m³
  • PM10: 3 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.63 µg/m³
  • PM10: 3.53 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.19 µg/m³
  • PM10: 4.08 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.65 µg/m³
  • PM10: 4.56 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.05 µg/m³
  • PM10: 5 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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