Subject Top Page: AQMIS 2 - Air Quality and Meteorological Information System

Air Quality and Meteorological Information System

AQMIS provides a combination of preliminary (real-time) and official (historical) data.
Preliminary data are subject to change.

AQMIS data are in PST

This page last reviewed June 24, 2016

  • Breathe Well
  • AQMIS has gone mobile! View the most up-to-date ozone and PM2.5 concentrations near you or at over 150 cities across California on your mobile device.
  • Latest Ozone
  • For selected areas within the state, provides information on maximum ozone concentrations for yesterday, today, and for the year so far.
  • Latest Year's Ozone
  • For selected areas within the state, provides information on ozone exceedances for the last three years and current year so far.  Results can be viewed at site level if desired.
  • Air Quality Data
  • Query tool to obtain both preliminary and official air quality data by selecting a time frame, an area of the state, and the type of report.  Results can be clicked through for more detail.
  • Meteorological Data
  • Query tool to obtain real-time or historical meteorological data by selecting parameter, time period, area of the state, and report format.  Results can be clicked through for more detail.
  • Google Maps
  • Customizable visual display of air quality or meteorological parameters using color-coded dots at site locations. Allows panning and zooming and satellite and terrain views.
  • Greenhouse Gas (GHG) Data
  •   Query tool to obtain both preliminary and official Greenhouse Gas (GHG) data by selecting a time frame, an area of the state, and the type of report.  Results can be clicked through for more detail.