Hourly Weather | Today Saturday, September 6, 2025
Costa Mesa, California
8 PM
Cloudy Night
70°
Feels Like 70°
0
Humidity: 83%
Wind: 6 mph
UV Index: 0
9 PM
Cloudy Night
70°
Feels Like 68°
0
Humidity: 82%
Wind: 6 mph
UV Index: 0
10 PM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 85%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 86%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 13.00 µg/m³
  • PM10: 19.10 µg/m³
  • O₃: 35.56 ppb
  • NO₂: 13.10 ppb
  • SO₂: 1.72 ppb
  • CO: 195.69 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
56 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.13 µg/m³
  • PM10: 18.53 µg/m³
  • O₃: 33.25 ppb
  • NO₂: 13.38 ppb
  • SO₂: 1.75 ppb
  • CO: 188.83 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
56 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.27 µg/m³
  • PM10: 18.17 µg/m³
  • O₃: 31.13 ppb
  • NO₂: 13.70 ppb
  • SO₂: 1.76 ppb
  • CO: 184.79 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
56 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.04 µg/m³
  • PM10: 16.58 µg/m³
  • O₃: 25.76 ppb
  • NO₂: 14.06 ppb
  • SO₂: 1.95 ppb
  • CO: 159.83 ppb

Health Recommendations:

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