Today | Weather | Friday, September 18, 2026

Weather in Long Beach, California

09:37 AM
Now
Cloudy Weather
72° F
Feels Like 75°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 3
Humidity 73 %
Today
Sunny Weather
Day 79°
Night 66°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 7

Long Beach Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 18, 2025)
Cloudy Night

Day

81°

Night

70°

Wind

5 mph

Precipitation

25 %

Air Quality in Long Beach

NOW
41 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.58 µg/m³
PM10 11.16 µg/m³
O3 0.045 ppm
NO2 0.2 ppb
SO2 0.2 ppb
CO 0.12 ppm
NH3 0 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)
PM2.53.58 µg/m³
PM1011.16 µg/m³
O387.92 µg/m³
NO20.39 µg/m³
SO20.5 µg/m³
CO140.27 µg/m³
NH30 µg/m³
NO0.03 µg/m³