Toggle navigation
Places
AQI (US)
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
Alameda County
Castro Valley
AQI (US)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Castro Valley
Alameda County, California
2024-09-21 09:00
AQI (US)
Good
Pollutants
|
Pollens
O3
μg/m³
42.9
PM2.5
μg/m³
4
NO2
μg/m³
9.2
CO
μg/m³
375
SO2
μg/m³
0.3
Pollen
6.0
Weather
℃
℃
℉
13℃
86%
3 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
AQI (US)
AQI (US)
Pollen
O3
PM2.5
NO2
CO
SO2
Places included
Site 51052
AQI 21
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
Castro Valley
AQI 17
Hayward
AQI 17
Fairview
AQI 17
San Lorenzo
AQI 17
San Leandro
AQI 17
Union City
AQI 11
San Ramon
AQI 14
Dublin
AQI 14
Danville
AQI 14
Moraga
AQI 17
Canyon
AQI 17
Air Matters © 2024