Today | Weather | Thursday, February 5, 2026

Weather in Pasadena, California

05:32 PM
Now
Cloudy Night
73° F
Feels Like 68°
Precipitation 0 %
Wind 20 mph
Humidity 27 %
Today
Cloudy Weather
Day 81°
Night 52°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 4

Pasadena Weather Forecast Updated

13 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 5, 2025)
Rainy Weather

Day

63°

Night

54°

Wind

4 mph

UV Index

1

Precipitation

70 %

Air Quality in Pasadena

NOW
155 AQI
Unhealthy air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 64.19 µg/m³
PM10 84.9 µg/m³
O3 0.060 ppm
NO2 0.4 ppb
SO2 0.1 ppb
CO 0.31 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:

Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.

Show raw pollutant concentrations (µg/m³)
PM2.564.19 µg/m³
PM1084.9 µg/m³
O3116.85 µg/m³
NO20.69 µg/m³
SO20.24 µg/m³
CO350.38 µg/m³
NH30 µg/m³
NO0 µg/m³