❮
Today Hourly 7 days 30 days Air Quality
❯
Hourly Weather | Today › Tuesday, April 7, 2026
Active Weather Warnings
Hillsboro, Oregon
12 PM
Cloudy Weather
55°
Feels Like 64°
0
Humidity: 52%
UV Index: 4
Wind: 5 mph
1 PM
Cloudy Weather
57°
Feels Like 70°
0
Humidity: 46%
UV Index: 5
Wind: 4 mph
2 PM
Cloudy Weather
61°
Feels Like 72°
0
Humidity: 41%
UV Index: 5
Wind: 4 mph
3 PM
Cloudy Weather
63°
Feels Like 70°
0
Humidity: 39%
UV Index: 4
Wind: 5 mph
4 PM
Cloudy Weather
63°
Feels Like 70°
0
Humidity: 38%
UV Index: 3
Wind: 5 mph
5 PM
Cloudy Weather
63°
Feels Like 64°
0
Humidity: 40%
UV Index: 2
Wind: 6 mph
6 PM
Cloudy Weather
63°
Feels Like 63°
0
Humidity: 41%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Weather
61°
Feels Like 59°
0
Humidity: 43%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Night
57°
Feels Like 54°
0
Humidity: 49%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
54°
Feels Like 50°
0
Humidity: 56%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
50°
Feels Like 46°
0
Humidity: 61%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
46°
Feels Like 45°
0
Humidity: 67%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.88 µg/m³
  • PM10: 3.72 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.78 µg/m³
  • PM10: 3.4 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.89 µg/m³
  • PM10: 3.62 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.96 µg/m³
  • PM10: 3.78 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 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: 1.96 µg/m³
  • PM10: 3.77 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.12 µg/m³
  • PM10: 3.99 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.35 µg/m³
  • PM10: 4.4 µg/m³
  • O3: 0.037 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.54 µg/m³
  • PM10: 4.85 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.63 µg/m³
  • PM10: 5.17 µg/m³
  • O3: 0.023 ppm
  • NO2: 2.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.68 µg/m³
  • PM10: 5.34 µg/m³
  • O3: 0.019 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.76 µg/m³
  • PM10: 5.51 µg/m³
  • O3: 0.017 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.77 µg/m³
  • PM10: 5.57 µg/m³
  • O3: 0.015 ppm
  • NO2: 2.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Hillsboro

Minor Expected Likely

Frost Advisory

Frost Advisory issued April 7 at 9:21AM PDT until April 8 at 9:00AM PDT by NWS Portland OR
Apr 7, 11:00 PM → Apr 8, 9:00 AM
WHAT: Temperatures as low as 34 to 36 degrees will result in
frost formation.

WHERE: Central and Southern Willamette Valley, Tualatin Valley,
and Inner Vancouver Metro.

WHEN: From 11 PM this evening to 9 AM PDT Wednesday.

IMPACTS: Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
+ Read More
Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.
Updated: Apr 7, 11:18 AM Source: NWS Alert

Explore U.S. Weather Trends

❄️ Coldest Cities in the U.S. – Live Temperature Rankings 🔥 Hottest Cities Today – Real-Time Heat Observations ⚠️ Active Weather Alerts – Warnings, Watches & Advisories 🌪️ Windiest Cities – Highest Sustained Wind Speeds 🌫️ Worst Air Quality – Cities with the Highest AQI 🍃 Best Air Quality – Cities with the Lowest AQI