Hourly Weather | Today Monday, April 27, 2026
Merced, California
3 PM
Cloudy Weather
66°
Feels Like 70°
0
Humidity: 35%
UV Index: 4
Wind: 6 mph
4 PM
Cloudy Weather
66°
Feels Like 68°
0
Humidity: 35%
UV Index: 2
Wind: 6 mph
5 PM
Cloudy Weather
70°
Feels Like 70°
0
Humidity: 33%
UV Index: 2
Wind: 7 mph
6 PM
Cloudy Weather
66°
Feels Like 66°
0
Humidity: 37%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Weather
64°
Feels Like 64°
0
Humidity: 42%
UV Index: 1
Wind: 7 mph
8 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 49%
UV Index: 0
Wind: 6 mph
9 PM
Night
59°
Feels Like 57°
0
Humidity: 55%
UV Index: 0
Wind: 6 mph
10 PM
Night
57°
Feels Like 55°
0
Humidity: 62%
UV Index: 0
Wind: 6 mph
11 PM
Night
54°
Feels Like 54°
0
Humidity: 69%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

3 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.17 µg/m³
  • PM10: 2.2 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.23 µg/m³
  • PM10: 2.24 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.3 µg/m³
  • PM10: 2.33 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
54 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.49 µg/m³
  • PM10: 2.7 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 1.76 µg/m³
  • PM10: 3.33 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.96 µg/m³
  • PM10: 3.89 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.03 µg/m³
  • PM10: 4.16 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.09 µg/m³
  • PM10: 4.33 µg/m³
  • O3: 0.045 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.

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

Pollutant Concentrations:

  • PM2.5: 2.14 µg/m³
  • PM10: 4.47 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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