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Current Air Quality Status

Station Health Status AQI Responsible Pollutant Last Poll Time Detailed Hourly Data
29_PALMS       12/31/1969 16:00 pm Detailed Hourly Data
BARSTOW Moderate 54 O3 PPB 09/16/2025 11:00 am Detailed Hourly Data
HESPERIA Good 43 O3 PPB 09/16/2025 11:00 am Detailed Hourly Data
LANCASTER       12/31/1969 16:00 pm Detailed Hourly Data
LUCERNE VALLEY Good 21 PMSC 09/16/2025 11:00 am Detailed Hourly Data
PHELAN       12/31/1969 16:00 pm Detailed Hourly Data
TRONA Good 26 PMSC 09/16/2025 11:00 am Detailed Hourly Data
VICTORVILLE Moderate 51 PM2.5LC_BAM 09/16/2025 11:00 am Detailed Hourly Data

Observed Wind Conditions

Station Time Observed Wind Direction Avg. Wind Speed Measured Unit Wind Gusts Measured Unit Previous Data
               
               
               
               
               
               
               
               

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Understanding AQI

The purpose of the AQI is to help you understand what local air quality means to your health.

To make it easier to understand, the AQI is divided into six categories:

Air Quality Index
(AQI) Values		 Levels of Health Concern Colors
When the AQI is in this range: ..air quality conditions are: ...as symbolized by this color:
0-50 Good Green
51-100 Moderate Yellow
101-150 Unhealthy for Sensitive Groups Orange
151 to 200 Unhealthy Red
201 to 300 Very Unhealthy Purple
301 to 500 Hazardous Maroon

AQI colors

EPA has assigned a specific color to each AQI category to make it easier for people to understand quickly whether air pollution is reaching unhealthy levels in their communities.

For example, the color orange means that conditions are "unhealthy for sensitive groups," while red means that conditions may be "unhealthy for everyone," and so on.

Air Quality Index Levels of Health Concern Numerical
Value		 Meaning
Good 0 to 50 Air quality is considered satisfactory, and air pollution poses little or no risk
Moderate 51 to 100 Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
Unhealthy for Sensitive Groups 101 to 150 Members of sensitive groups may experience health effects. The general public is not likely to be affected.
Unhealthy 151 to 200 Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
Very Unhealthy 201 to 300 Health warnings of emergency conditions. The entire population is more likely to be affected.
Hazardous 301 to 500 Health alert: everyone may experience more serious health effects


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Displayed Information and Values are Based on Preliminary Data.
To Obtain Certified Data Please Contact The District.