What is the air quality in Cupertino today?

The current Air Quality Index (AQI) in Cupertino is 15 (Good). PM2.5 concentration is 3.67 µg/m³.

What is the temperature in Cupertino right now?

The current temperature in Cupertino is 22.1°C (feels like 22.1°C). Humidity is 51.9% and wind speed is 60.8 km/h.

Is it safe to go outside in Cupertino?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Cupertino, United States

Windy

22.1°C · 51.9% humidity

22.1°

Feels 22.1°

Good

Air quality is satisfactory. Enjoy outdoor activities.

9 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

45h · 72 stn

View full history →

Cupertino's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

51.9%

Humidity

60.8 km/h

Wind NW

1014.0 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

3.67 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Cupertino?

Temperature & Precipitation

PM2.5 Trend

45h · 72 stations

PM2.53.67 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (9 stations within 25 km)

3.67

Median

3.84

Average

2.2

Low

4.82

High

PM2.5 µg/m³ · Model: 5.8 · Bias: +2.1

What is the 7-day forecast for Cupertino?

10-21

24.9° 16.0°

10-22

26.4° 16.5°

10-23

23.0° 17.1°

10-24

23.1° 15.2°

10-25

23.9° 14.3°

1.13 mm

10-26

22.5° 15.3°

10-27

27.1° 17.2°

Both models agree Avg diff: 5.4°C

Where are air quality stations near Cupertino?

Cupertino City Hall

0.6 km PM2.5: 3.6 µg/m³

JFK Middle School

2.1 km PM2.5: 4.8 µg/m³

Environment Education Center

2.9 km PM2.5: 3.3 µg/m³

N Foothhill Blvd

3.2 km PM2.5: 4.0 µg/m³

San Jose - Jackson St, Santa Clara, California

12.5 km PM2.5: 11.3 µg/m³

Acterra!

13.7 km PM2.5: 4.2 µg/m³

Cristo Rey Jesuit High School

15.2 km PM2.5: 4.5 µg/m³

San Jose-Knox Avenue, Santa Clara, California

16.2 km PM2.5: 5.0 µg/m³

San Jose-Knox Avenue, Santa Clara, California

16.2 km PM2.5: 4.1 µg/m³

San Jose-Knox Avenue, Santa Clara, California

16.2 km PM2.5: 2.2 µg/m³

What cities are near Cupertino?

16 Sunnyvale 17 Saratoga 16 Santa Clara 16 Campbell 17 Mountain View 17 Los Altos 16 Los Gatos 15 San Jose 16 Milpitas 16 Palo Alto

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-21T00:31 UTC.