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
Sierra City
AQI (US)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Sierra City
Sierra County, California
2025-03-18 18:00
AQI (US)
Good
Pollutants
O3
μg/m³
55.8
NO2
μg/m³
32.8
PM2.5
μg/m³
2.6
PM10
μg/m³
9.3
Weather
℃
℃
℉
3℃
97%
3 kph
5 of 11
Historical Data
Hourly
Hourly
Daily
AQI (US)
AQI (US)
O3
NO2
PM2.5
PM10
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
Sierra City
AQI 25
Downieville
AQI 25
Whitehawk
AQI 31
Johnsville
AQI 31
Graeagle
AQI 31
C-Road
AQI 31
Washington
AQI 5
Iron Horse
AQI 31
Portola
AQI 31
Little Grass Valley
AQI 25
Beckwourth
AQI 31
Air Matters © 2025