Toggle navigation
Places
CAQI (Europe)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
English
Français
Deutsch
日本語
한국어
简体中文
繁體中文
North America
United States
California
San Mateo County
Redwood City
CAQI (Europe)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Redwood City
Redwood City, California
2025-12-11 23:00
CAQI (Europe)
Very Low
Pollutants
|
Pollens
PM2.5
μg/m³
10
NO2
μg/m³
19.9
O3
μg/m³
19.3
CO
μg/m³
375
Pollen
4.1
Weather
℃
℃
℉
13℃
78%
7 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
CAQI (Europe)
CAQI (Europe)
Pollen
PM2.5
NO2
O3
CO
Data Sources
http://www.airnow.gov/
Get the App
Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.
iPhone, iPad
Android
Scan QR Code to Download App
iOS
Google Play
Download APK
Cities Nearby
North Fair Oaks
AQI 17
Atherton
AQI 17
Redwood City
AQI 17
Menlo Park
AQI 17
West Menlo Park
AQI 17
East Palo Alto
AQI 17
San Carlos
AQI 17
Emerald Hills
AQI 17
Palo Alto
AQI 17
Stanford
AQI 17
Woodside
AQI 17
Air Matters © 2025