Today | Weather | Monday, September 21, 2026

Weather in Surprise, Arizona

02:09 AM
Now
Cloudy Night
81° F
Feels Like 79°
Precipitation 0 %
Wind 7 mph
Humidity 34 %
Today
Cloudy Weather
Day 100°
Night 75°
Precipitation 1 %
Wind 7 mph
UV Index (0 - 11+) 7

Surprise Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 21, 2025)
Stormy Weather

Day

100°

Night

79°

Wind

9 mph

Precipitation

55 %

Air Quality in Surprise

NOW
26 AQI
Good air quality Dominant pollutant: PM10

Pollutant Concentrations:

PM2.5 5.03 µg/m³
PM10 27.56 µg/m³
O3 0.027 ppm
NO2 0.4 ppb
SO2 0 ppb
CO 0.08 ppm
NH3 0.32 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.55.03 µg/m³
PM1027.56 µg/m³
O352.65 µg/m³
NO20.68 µg/m³
SO20.04 µg/m³
CO93.91 µg/m³
NH30.32 µg/m³
NO0 µg/m³