1. North America
  2. United States
  3. California
  4. San Mateo County
  5. Emerald Hills

Emerald Hills

San Mateo County, California

2026-08-24 05:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
8.3
O3
μg/m³
43.9
PM10
μg/m³
13
NO2
μg/m³
4.2
CO
μg/m³
123.2
Weather
  • ℃
  • ℉
17℃
78%
19 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • PM10
  • NO2
  • CO

Get the App

Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.

iPhone, iPad

Android

Cities Nearby

Emerald Hills
AQI 46
Redwood City
AQI 39
Woodside
AQI 51
San Carlos
AQI 39
Atherton
AQI 45
Belmont
AQI 39
North Fair Oaks
AQI 39
West Menlo Park
AQI 45
Menlo Park
AQI 45
Portola Valley
AQI 52
Highlands-Baywood Park
AQI 28