Today | Weather | Wednesday, August 12, 2026

Weather in Merced, California

04:15 AM
Now
Cloudy Night
66° F
Feels Like 64°
Precipitation 7 %
Wind 5 mph
Humidity 64 %
Today
Cloudy Weather
Day 97°
Night 63°
Precipitation 13 %
Wind 6 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

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

5 minutes ago
Last updated on

Air Quality in Merced

NOW
125 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 45.21 µg/m³
PM10 54.19 µg/m³
O3 0.026 ppm
NO2 1.6 ppb
SO2 0.1 ppb
CO 0.16 ppm
NH3 0.81 µg/m³
NO 0 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:

Members of sensitive groups may experience health effects. The general public is not likely to be affected.

Show raw pollutant concentrations (µg/m³)
PM2.545.21 µg/m³
PM1054.19 µg/m³
O351.49 µg/m³
NO23.08 µg/m³
SO20.16 µg/m³
CO182.28 µg/m³
NH30.81 µg/m³
NO0 µg/m³