Hourly Weather | Today Thursday, February 26, 2026
Hillsboro, Oregon
1 AM
Cloudy Night
34°
Feels Like 36°
0
Humidity: 93%
UV Index: 0
Wind: 4 mph
2 AM
Cloudy Night
34°
Feels Like 34°
0
Humidity: 95%
UV Index: 0
Wind: 4 mph
3 AM
Cloudy Night
32°
Feels Like 34°
0
Humidity: 95%
UV Index: 0
Wind: 2 mph
4 AM
Cloudy Night
32°
Feels Like 34°
0
Humidity: 93%
UV Index: 0
Wind: 2 mph
5 AM
Cloudy Night
30°
Feels Like 32°
0
Frost Risk: 59%
Humidity: 95%
UV Index: 0
Wind: 2 mph
6 AM
Cloudy Night
28°
Feels Like 30°
0
Frost Risk: 86%
Humidity: 97%
UV Index: 0
Wind: 2 mph
7 AM
Cloudy Weather
28°
Feels Like 30°
0
Frost Risk: 82%
Humidity: 97%
UV Index: 0
Wind: 2 mph
8 AM
Cloudy Weather
32°
Feels Like 34°
0
Humidity: 96%
UV Index: 0
Wind: 2 mph
9 AM
Cloudy Weather
36°
Feels Like 37°
0
Humidity: 93%
UV Index: 1
Wind: 4 mph
10 AM
Cloudy Weather
39°
Feels Like 43°
0
Humidity: 84%
UV Index: 1
Wind: 4 mph
11 AM
Cloudy Weather
45°
Feels Like 48°
0
Humidity: 74%
UV Index: 1
Wind: 4 mph
12 PM
Cloudy Weather
48°
Feels Like 52°
0
Humidity: 68%
UV Index: 1
Wind: 2 mph
1 PM
Cloudy Weather
50°
Feels Like 54°
0
Humidity: 63%
UV Index: 1
Wind: 2 mph
2 PM
Cloudy Weather
54°
Feels Like 55°
0
Humidity: 58%
UV Index: 1
Wind: 4 mph
3 PM
Cloudy Weather
55°
Feels Like 55°
0
Humidity: 55%
UV Index: 1
Wind: 5 mph
4 PM
Cloudy Weather
55°
Feels Like 55°
0
Humidity: 54%
UV Index: 0
Wind: 5 mph
5 PM
Cloudy Weather
54°
Feels Like 52°
0
Humidity: 59%
UV Index: 0
Wind: 5 mph
6 PM
Cloudy Weather
50°
Feels Like 48°
0
Humidity: 65%
UV Index: 0
Wind: 5 mph
7 PM
Night
46°
Feels Like 46°
0
Humidity: 72%
UV Index: 0
Wind: 5 mph
8 PM
Cloudy Night
45°
Feels Like 43°
0
Humidity: 79%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
41°
Feels Like 39°
0
Humidity: 87%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
39°
Feels Like 39°
0
Humidity: 88%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
39°
Feels Like 37°
0
Humidity: 88%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.8 µg/m³
  • PM10: 3.57 µg/m³
  • O3: 0.026 ppm
  • NO2: 2.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

2 AM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.96 µg/m³
  • PM10: 3.78 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

3 AM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.17 µg/m³
  • PM10: 4.04 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

4 AM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.37 µg/m³
  • PM10: 4.34 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

5 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.75 µg/m³
  • PM10: 4.87 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.31 µg/m³
  • PM10: 5.59 µg/m³
  • O3: 0.026 ppm
  • NO2: 2.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 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: 3.9 µg/m³
  • PM10: 6.41 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.37 µg/m³
  • PM10: 7.14 µg/m³
  • O3: 0.021 ppm
  • NO2: 3.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.09 µg/m³
  • PM10: 7.09 µg/m³
  • O3: 0.019 ppm
  • NO2: 3.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.47 µg/m³
  • PM10: 6.61 µg/m³
  • O3: 0.018 ppm
  • NO2: 3.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.63 µg/m³
  • PM10: 5.47 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.38 µg/m³
  • PM10: 5.11 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 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: 2.5 µg/m³
  • PM10: 5.09 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.34 µg/m³
  • PM10: 4.51 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.23 µg/m³
  • PM10: 4.11 µg/m³
  • O3: 0.044 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 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: 2.27 µg/m³
  • PM10: 4.09 µg/m³
  • O3: 0.044 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.45 µg/m³
  • PM10: 4.39 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.7 µg/m³
  • PM10: 4.82 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.1 µg/m³
  • PM10: 5.37 µg/m³
  • O3: 0.037 ppm
  • NO2: 3.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.64 µg/m³
  • PM10: 6.03 µg/m³
  • O3: 0.036 ppm
  • NO2: 3.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.06 µg/m³
  • PM10: 6.58 µg/m³
  • O3: 0.036 ppm
  • NO2: 3.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.37 µg/m³
  • PM10: 6.98 µg/m³
  • O3: 0.035 ppm
  • NO2: 3.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.57 µg/m³
  • PM10: 7.25 µg/m³
  • O3: 0.033 ppm
  • NO2: 3.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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