Today | Weather | Tuesday, April 21, 2026

Weather in Merced, California

03:20 PM
Now
Stormy Weather
57° F
Feels Like 54°
Precipitation 68 %
Wind 10 mph
UV Index (0 - 11+) 2
Humidity 81 %
Today
Stormy Weather
Day 59°
Night 45°
Precipitation 100 %
Wind 9 mph
UV Index (0 - 11+) 3

Merced Weather Forecast Updated

Last updated on

Air Quality in Merced

NOW
50 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.52 µg/m³
PM10 0.73 µg/m³
O3 0.054 ppm
NO2 0.2 ppb
SO2 0.1 ppb
CO 0.12 ppm
NH3 0.2 µg/m³
NO 0.03 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

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

Show raw pollutant concentrations (µg/m³)
PM2.50.52 µg/m³
PM100.73 µg/m³
O3105.29 µg/m³
NO20.35 µg/m³
SO20.18 µg/m³
CO138.34 µg/m³
NH30.2 µg/m³
NO0.03 µg/m³