Air Quality in Cupertino, United States

Rain
18.1°C · 67.2% humidity
18.1°
Feels 18.1°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
8 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
19 7pm
18
11
24 10pm
24
11
24 1am
24
24
24 4am
24
36
49 7am
49
74
74 10am
74
49
24 1pm
36
24
24 4pm
24
24
Station readings
19
18
CAMS model adj -1
12
12
12
25
25
12
25
25
25
25
25
37
50
50
75
75
75
50
25
37
25
25
25
25
AD 728×90

PM2.5 Trend (24h)

25h · 66 stations
67.2%
Humidity
34.9 km/h
Wind W
1009.5 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Cupertino?

Temperature & Precipitation

PM2.55.92 µg/m³ ✓ WHO
Good
PM1027.45 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (8 stations within 25 km)
5.92
Median
6.3
Average
4.58
Low
8.94
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -0.0

What is the 7-day forecast for Cupertino?

04-09
21.8° 15.0°
0.94 mm
04-10
18.7° 12.1°
2.94 mm
04-11
19.3° 11.5°
0.06 mm
04-12
13.2° 9.0°
6.75 mm
04-13
14.8° 7.6°
0.25 mm
04-14
17.7° 8.3°
04-15
20.5° 11.0°
Both models agree Avg diff: 2.0°C

Where are air quality stations near Cupertino?

25
Cupertino City Hall
0.6 km PM2.5: 5.9 µg/m³
31
JFK Middle School
2.1 km PM2.5: 7.5 µg/m³
23
Environment Education Center
2.9 km PM2.5: 5.4 µg/m³
28
N Foothhill Blvd
3.2 km PM2.5: 6.6 µg/m³
34
San Jose - Jackson St, Santa Clara, California
12.5 km
28
San Jose - Jackson St, Santa Clara, California
12.5 km
65
San Jose - Jackson St, Santa Clara, California
12.5 km
42
San Jose - Jackson St, Santa Clara, California
12.5 km
23
Acterra!
13.7 km PM2.5: 5.4 µg/m³
33
Cristo Rey Jesuit High School
15.2 km PM2.5: 7.9 µg/m³

What cities are near Cupertino?

25 Sunnyvale 23 Saratoga 25 Santa Clara 25 Campbell 25 Mountain View 25 Los Altos 23 Los Gatos 26 San Jose 25 Milpitas 25 Palo Alto

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T22:09 UTC.