Today | Weather | Monday, April 27, 2026

Weather in Daly City, California

08:56 PM
Now
Cloudy Night
55° F
Feels Like 48°
Precipitation 0 %
Wind 12 mph
Humidity 78 %
Today
Cloudy Weather
Day 64°
Night 52°
Precipitation 25 %
Wind 10 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.

Daly City Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 27, 2025)
Cloudy Weather

Day

59°

Night

48°

Wind

12 mph

UV Index

5

Precipitation

18 %

Air Quality in Daly City

NOW
55 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.4 µg/m³
PM10 4.37 µg/m³
O3 0.056 ppm
NO2 0.2 ppb
SO2 0.2 ppb
CO 0.11 ppm
NH3 0 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:

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)
PM2.51.4 µg/m³
PM104.37 µg/m³
O3109.29 µg/m³
NO20.32 µg/m³
SO20.6 µg/m³
CO126.02 µg/m³
NH30 µg/m³
NO0 µg/m³