What is the air quality in Sunnyvale today?

The current Air Quality Index (AQI) in Sunnyvale is 19 (Good). PM2.5 concentration is 4.59 µg/m³.

What is the temperature in Sunnyvale right now?

The current temperature in Sunnyvale is 27.1°C (feels like 29.2°C). Humidity is 51.8% and wind speed is 27.7 km/h.

Is it safe to go outside in Sunnyvale?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 9.4 (Very High).

Air Quality in Sunnyvale, United States

Partly Cloudy

27.1°C · 51.8% humidity

27.1°

Feels 29.2°

Good

Air quality is satisfactory. Enjoy outdoor activities.

10 stations

Nearby Monitoring Stations

AQI Forecast

54 7am

19 10am

24 1pm

26 4pm

27 7pm

34 10pm

34 1am

34 4am

Air Quality Index Trend

45h · 103 stn

View full history →

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

51.8%

Humidity

27.7 km/h

Wind WNW

1016.2 hPa

Pressure

9.4

UV Very High

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.59 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Sunnyvale?

Temperature & Precipitation

PM2.5 Trend

45h · 103 stations

PM2.54.59 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX9.4

Very High

Station readings (10 stations within 25 km)

4.59

Median

4.84

Average

3.17

Low

7.2

High

PM2.5 µg/m³ · Model: 6.5 · Bias: +1.9

Both models agree Avg diff: 3.9°C

Where are air quality stations near Sunnyvale?

Cupertino City Hall

5.6 km PM2.5: 4.1 µg/m³

N Foothhill Blvd

5.8 km PM2.5: 4.3 µg/m³

JFK Middle School

6.6 km PM2.5: 5.6 µg/m³

Environment Education Center

6.6 km PM2.5: 3.6 µg/m³

Acterra!

9.2 km PM2.5: 5.4 µg/m³

San Jose - Jackson St, Santa Clara, California

12.7 km PM2.5: 7.2 µg/m³

Berkeley-Palo Alto

13.6 km PM2.5: 3.2 µg/m³

Cristo Rey Jesuit High School

15.4 km PM2.5: 6.1 µg/m³

Redwood City, San Mateo, California

19.5 km PM2.5: 4.3 µg/m³

Redwood City, San Mateo, California

19.5 km PM2.5: 1.7 µg/m³

What cities are near Sunnyvale?

20 Mountain View 18 Cupertino 19 Los Altos 23 Santa Clara 19 Saratoga 22 Campbell 15 Palo Alto 29 San Jose 24 Milpitas 15 East 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 2026-09-05T17:28 UTC.