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Hourly Weather | Today | Thursday, September 4, 2025
Hillsboro, Oregon
11 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
70°
Feels Like 79°
24
Humidity: 73%
Wind: 4 mph
UV Index: 42
12 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
75°
Feels Like 82°
19
Humidity: 60%
Wind: 4 mph
UV Index: 49
1 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
81°
Feels Like 88°
13
Humidity: 49%
Wind: 5 mph
UV Index: 52
2 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
82°
Feels Like 90°
0
Humidity: 46%
Wind: 5 mph
UV Index: 49
3 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
86°
Feels Like 91°
0
Humidity: 42%
Wind: 5 mph
UV Index: 42
4 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
88°
Feels Like 91°
0
Humidity: 39%
Wind: 6 mph
UV Index: 31
5 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
90°
Feels Like 91°
0
Humidity: 37%
Wind: 6 mph
UV Index: 21
6 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
88°
Feels Like 88°
0
Humidity: 40%
Wind: 7 mph
UV Index: 13
7 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
84°
Feels Like 84°
0
Humidity: 45%
Wind: 7 mph
UV Index: 4
8 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
81°
Feels Like 79°
0
Humidity: 51%
Wind: 7 mph
UV Index: 0
9 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
77°
Feels Like 75°
0
Humidity: 58%
Wind: 7 mph
UV Index: 0
10 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
73°
Feels Like 72°
0
Humidity: 67%
Wind: 7 mph
UV Index: 0
11 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
70°
Feels Like 66°
0
Humidity: 76%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

11 AM
62 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 16.05 µg/m³
  • PM10: 18.08 µg/m³
  • O₃: 28.86 ppb
  • NO₂: 5.28 ppb
  • SO₂: 0.46 ppb
  • CO: 161.77 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

12 PM
63 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 17.29 µg/m³
  • PM10: 19.23 µg/m³
  • O₃: 35.24 ppb
  • NO₂: 4.48 ppb
  • SO₂: 0.50 ppb
  • CO: 164.90 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

1 PM
63 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 19.65 µg/m³
  • PM10: 20.90 µg/m³
  • O₃: 47.18 ppb
  • NO₂: 1.80 ppb
  • SO₂: 0.63 ppb
  • CO: 178.56 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

2 PM
63 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 20.07 µg/m³
  • PM10: 21.35 µg/m³
  • O₃: 53.82 ppb
  • NO₂: 1.37 ppb
  • SO₂: 0.66 ppb
  • CO: 179.23 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

3 PM
63 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 20.01 µg/m³
  • PM10: 21.20 µg/m³
  • O₃: 54.65 ppb
  • NO₂: 1.35 ppb
  • SO₂: 0.61 ppb
  • CO: 178.40 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

4 PM
63 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 19.42 µg/m³
  • PM10: 20.55 µg/m³
  • O₃: 55.47 ppb
  • NO₂: 1.33 ppb
  • SO₂: 0.56 ppb
  • CO: 177.56 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

5 PM
63 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 18.74 µg/m³
  • PM10: 19.75 µg/m³
  • O₃: 56.30 ppb
  • NO₂: 1.32 ppb
  • SO₂: 0.52 ppb
  • CO: 176.73 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

6 PM
62 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 18.04 µg/m³
  • PM10: 18.93 µg/m³
  • O₃: 48.98 ppb
  • NO₂: 3.30 ppb
  • SO₂: 0.48 ppb
  • CO: 192.96 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

7 PM
62 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 17.49 µg/m³
  • PM10: 18.20 µg/m³
  • O₃: 41.67 ppb
  • NO₂: 5.29 ppb
  • SO₂: 0.45 ppb
  • CO: 209.19 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

8 PM
62 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 16.93 µg/m³
  • PM10: 17.55 µg/m³
  • O₃: 34.35 ppb
  • NO₂: 7.27 ppb
  • SO₂: 0.41 ppb
  • CO: 225.42 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

9 PM
62 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 15.51 µg/m³
  • PM10: 16.04 µg/m³
  • O₃: 30.04 ppb
  • NO₂: 7.30 ppb
  • SO₂: 0.40 ppb
  • CO: 224.56 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

10 PM
62 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.52 µg/m³
  • PM10: 15.03 µg/m³
  • O₃: 25.74 ppb
  • NO₂: 7.32 ppb
  • SO₂: 0.38 ppb
  • CO: 223.70 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

11 PM
62 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.26 µg/m³
  • PM10: 14.82 µg/m³
  • O₃: 21.43 ppb
  • NO₂: 7.35 ppb
  • SO₂: 0.36 ppb
  • CO: 222.83 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

Current Real-Time Air Quality Report