Today | Weather | Monday, April 27, 2026

Weather in Merced, California

01:36 PM
Now
Cloudy Weather
66° F
Feels Like 72°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 6
Humidity 40 %
Today
Cloudy Weather
Day 70°
Night 45°
Precipitation 10 %
Wind 6 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Merced Weather Forecast Updated

Last updated on

Air Quality in Merced

NOW
56 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.15 µg/m³
PM10 2.21 µg/m³
O3 0.056 ppm
NO2 0.2 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 0.42 µg/m³
NO 0.05 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.51.15 µg/m³
PM102.21 µg/m³
O3109.98 µg/m³
NO20.45 µg/m³
SO20.18 µg/m³
CO124.47 µg/m³
NH30.42 µg/m³
NO0.05 µg/m³