Today’s Air Quality & Forecasts

Current Air Quality Conditions

Current air quality values and colors correspond with the Air Quality Index (AQI). More information about the AQI is available at the bottom of this webpage.

The grid below shows current AQI conditions for each pollutant that is measured at each of our monitoring stations. By clicking the “Show” button on each monitoring station box, you can see what the AQI conditions were for the past 24 hours, shown in a rolling format.

HourOZONEPM10PM2.5
2025-12-14T11:0016214
2025-12-14T12:0015112
2025-12-14T13:0017014
2025-12-14T14:0019010
2025-12-14T15:001918
2025-12-14T16:0019115
2025-12-14T17:0019018
2025-12-14T18:0019014
2025-12-14T19:0021016
2025-12-14T20:0022113
2025-12-14T21:0023112
2025-12-14T22:002409
2025-12-14T23:002407
2025-12-15T00:002406
2025-12-15T01:002216
2025-12-15T02:001820
2025-12-15T03:001433
2025-12-15T04:001339
2025-12-15T05:001427
2025-12-15T06:001413
2025-12-15T07:001404
2025-12-15T08:001808
2025-12-15T09:001709
2025-12-15T10:001712
2025-12-15T11:001910
2025-12-15T12:001910
2025-12-15T13:0019111
2025-12-15T14:0019011
2025-12-15T15:001918
2025-12-15T16:0019015
2025-12-15T17:0019016
2025-12-15T18:0019111
2025-12-15T19:0021111
2025-12-15T20:00231622
2025-12-15T21:00241928
2025-12-15T22:00232331
2025-12-15T23:00222438
2025-12-16T00:00222841
2025-12-16T01:00222437
2025-12-16T02:00211938
2025-12-16T03:00191947
2025-12-16T04:00191543
2025-12-16T05:00181338
2025-12-16T06:00161447
2025-12-16T07:00151243
2025-12-16T08:0014927
2025-12-16T09:0013919
2025-12-16T10:0013715
2025-12-16T11:00715

Forecasts

Forecasted air quality values and colors correspond with the Air Quality Index (AQI). More information about the AQI is available at the bottom of this webpage.

Historical Data

To check “AQI Summary by Date”, click the link above which will direct you to EPA’s AirNow website. Select the “Archive” header on the new webpage. Then, use the calendar tool at the bottom of the webpage to select the historical date. On the left side of the screen, there are options to focus on specific pollutants using both the “Contours” and “Monitors” layers.

EPA AirNow Fire and Smoke Map

The EPA has launched a sensor data pilot project on the AirNow Fire and Smoke Map that is designed to provide the public with additional information on levels of fine particle pollution in the air, particularly during wildfires. The Fire and Smoke Map displays AQI data from permanent monitors, temporary monitors, and low-cost sensors. The type of monitor is indicated by the shape:

For potential smoke impacts and information from California wildfires, please see the California Smoke Information site.

About AQI Values & Recommendations

See AQI Table below for how to interpret the AQI colors shown in the current air quality grid and forecasts above. The index numbers represent a ranking for the pollutant, not the measurement of a pollutant. To see concentration values, which show the actual measured levels of the pollutant, visit the Station Data webpage. The Index below presents ratings for: ozone; particulate matter smaller than 10 microns in diameter (PM10); and particulate matter smaller than 2.5 microns in diameter (PM2.5).

aqi guide