Hourly Weather | Today Friday, September 5, 2025
Chula Vista, California
10 AM
Cloudy Weather
73°
Feels Like 79°
0
Humidity: 70%
Wind: 7 mph
UV Index: 35
11 AM
Cloudy Weather
75°
Feels Like 82°
0
Humidity: 69%
Wind: 7 mph
UV Index: 53
12 PM
Cloudy Weather
77°
Feels Like 84°
0
Humidity: 67%
Wind: 8 mph
UV Index: 75
1 PM
Cloudy Weather
79°
Feels Like 86°
0
Humidity: 64%
Wind: 9 mph
UV Index: 83
2 PM
Cloudy Weather
79°
Feels Like 84°
0
Humidity: 64%
Wind: 9 mph
UV Index: 75
3 PM
Cloudy Weather
77°
Feels Like 82°
0
Humidity: 64%
Wind: 9 mph
UV Index: 53
4 PM
Cloudy Weather
77°
Feels Like 79°
0
Humidity: 65%
Wind: 9 mph
UV Index: 38
5 PM
Cloudy Weather
75°
Feels Like 77°
0
Humidity: 67%
Wind: 9 mph
UV Index: 24
6 PM
Cloudy Weather
73°
Feels Like 73°
0
Humidity: 70%
Wind: 8 mph
UV Index: 13
7 PM
Cloudy Weather
72°
Feels Like 70°
0
Humidity: 78%
Wind: 7 mph
UV Index: 3
8 PM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 88%
Wind: 6 mph
UV Index: 0
9 PM
Cloudy Night
66°
Feels Like 66°
0
Humidity: 91%
Wind: 5 mph
UV Index: 0
10 PM
Cloudy Night
66°
Feels Like 66°
0
Humidity: 93%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 94%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

10 AM
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 15.26 µg/m³
  • PM10: 29.98 µg/m³
  • O₃: 21.37 ppb
  • NO₂: 14.38 ppb
  • SO₂: 1.18 ppb
  • CO: 274.22 ppb

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 14.43 µg/m³
  • PM10: 26.25 µg/m³
  • O₃: 26.99 ppb
  • NO₂: 12.31 ppb
  • SO₂: 1.38 ppb
  • CO: 247.97 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
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.32 µg/m³
  • PM10: 22.22 µg/m³
  • O₃: 32.85 ppb
  • NO₂: 9.92 ppb
  • SO₂: 1.38 ppb
  • CO: 219.62 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
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 12.56 µg/m³
  • PM10: 19.93 µg/m³
  • O₃: 37.67 ppb
  • NO₂: 7.95 ppb
  • SO₂: 1.26 ppb
  • CO: 198.42 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
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 12.03 µg/m³
  • PM10: 18.44 µg/m³
  • O₃: 42.09 ppb
  • NO₂: 6.16 ppb
  • SO₂: 1.11 ppb
  • CO: 180.08 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
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 11.70 µg/m³
  • PM10: 17.55 µg/m³
  • O₃: 42.10 ppb
  • NO₂: 5.81 ppb
  • SO₂: 1.04 ppb
  • CO: 174.94 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
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.70 µg/m³
  • PM10: 13.76 µg/m³
  • O₃: 45.88 ppb
  • NO₂: 3.77 ppb
  • SO₂: 0.96 ppb
  • CO: 149.02 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
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.91 µg/m³
  • PM10: 14.12 µg/m³
  • O₃: 44.65 ppb
  • NO₂: 3.85 ppb
  • SO₂: 0.87 ppb
  • CO: 149.10 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
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 11.21 µg/m³
  • PM10: 14.56 µg/m³
  • O₃: 39.99 ppb
  • NO₂: 5.91 ppb
  • SO₂: 0.94 ppb
  • CO: 158.09 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
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 11.58 µg/m³
  • PM10: 14.94 µg/m³
  • O₃: 35.34 ppb
  • NO₂: 7.96 ppb
  • SO₂: 1.01 ppb
  • CO: 167.09 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
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 11.90 µg/m³
  • PM10: 15.06 µg/m³
  • O₃: 30.69 ppb
  • NO₂: 10.01 ppb
  • SO₂: 1.08 ppb
  • CO: 176.09 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
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 12.33 µg/m³
  • PM10: 15.46 µg/m³
  • O₃: 27.48 ppb
  • NO₂: 11.73 ppb
  • SO₂: 1.15 ppb
  • CO: 182.78 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
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 12.84 µg/m³
  • PM10: 15.87 µg/m³
  • O₃: 24.27 ppb
  • NO₂: 13.44 ppb
  • SO₂: 1.22 ppb
  • CO: 189.48 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
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.45 µg/m³
  • PM10: 16.42 µg/m³
  • O₃: 21.07 ppb
  • NO₂: 15.15 ppb
  • SO₂: 1.29 ppb
  • CO: 196.18 ppb

Health Recommendations:

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