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
2025-06-29T06:0026729
2025-06-29T07:00241026
2025-06-29T08:0022929
2025-06-29T09:0021845
2025-06-29T10:0021639
2025-06-29T11:0017636
2025-06-29T12:0017648
2025-06-29T13:0016749
2025-06-29T14:00151038
2025-06-29T15:00171454
2025-06-29T16:0017949
2025-06-29T17:0022624
2025-06-29T18:0025518
2025-06-29T19:002649
2025-06-29T20:002742
2025-06-29T21:002650
2025-06-29T22:002540
2025-06-29T23:002730
2025-06-30T00:002530
2025-06-30T01:002570
2025-06-30T02:002560
2025-06-30T03:002360
2025-06-30T04:002260
2025-06-30T05:002140
2025-06-30T06:002130
2025-06-30T07:002021
2025-06-30T08:001910
2025-06-30T09:001818
2025-06-30T10:0018215
2025-06-30T11:0017310
2025-06-30T12:001720
2025-06-30T13:001610
2025-06-30T14:001510
2025-06-30T15:001510
2025-06-30T16:001960
2025-06-30T17:002080
2025-06-30T18:0023110
2025-06-30T19:0025140
2025-06-30T20:0025150
2025-06-30T21:0022190
2025-06-30T22:0022200
2025-06-30T23:0023260
2025-07-01T00:0024190
2025-07-01T01:0026178
2025-07-01T02:00271621
2025-07-01T03:00261335
2025-07-01T04:00261034
2025-07-01T05:00261031
2025-07-01T06:001031

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