Air Quality in Cupertino, United States

Windy
31.9°C · 17.8% humidity
31.9°
Feels 31.9°
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
11 stations

Nearby Monitoring Stations

AQI Forecast
27 11am
27
27
22 2pm
23
31
32 5pm
33
33
33 8pm
34
34
34 11pm
34
34
34 2am
34
34
34 5am
34
34
34 8am
34
34
AD 728×90

Air Quality Index Trend

48h · 1 stn

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.

17.8%
Humidity
53.1 km/h
Wind NW
1006.5 hPa
Pressure
29.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
22
5.17 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Cupertino?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.55.17 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX29.9
Extreme
AD 300×250
Station readings (11 stations within 25 km)
5.17
Median
6.17
Average
4.1
Low
12.6
High
PM2.5 µg/m³ · Model: 7.35 · Bias: +2.2

What is the 7-day forecast for Cupertino?

07-21
29.2° 15.5°
07-22
31.9° 18.2°
07-23
28.5° 22.7°
07-24
35.3° 16.8°
07-25
27.6° 19.5°
07-26
34.8° 14.8°
07-27
31.6° 17.8°
Both models agree Avg diff: 4.8°C

Where are air quality stations near Cupertino?

21
Cupertino City Hall
0.6 km PM2.5: 5.1 µg/m³
28
JFK Middle School
2.1 km PM2.5: 6.7 µg/m³
20
Environment Education Center
2.9 km PM2.5: 4.7 µg/m³
24
N Foothhill Blvd
3.2 km PM2.5: 5.8 µg/m³
56
San Jose - Jackson St, Santa Clara, California
12.5 km PM2.5: 14.5 µg/m³
26
Acterra!
13.7 km PM2.5: 6.2 µg/m³
25
Cristo Rey Jesuit High School
15.2 km PM2.5: 5.9 µg/m³
39
San Jose-Knox Avenue, Santa Clara, California
16.2 km PM2.5: 9.4 µg/m³
49
San Jose-Knox Avenue, Santa Clara, California
16.2 km PM2.5: 11.8 µg/m³
23
Berkeley-Palo Alto
17.8 km PM2.5: 5.4 µg/m³

What cities are near Cupertino?

25 Sunnyvale 24 Saratoga 32 Santa Clara 28 Campbell 25 Mountain View 25 Los Altos 24 Los Gatos 47 San Jose 30 Milpitas 23 Palo Alto
Get AQI alerts for Cupertino

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T21:48 UTC.