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Site Name: West Phoenix
Site Location: 39th Ave. & Earll Dr.
AQS Code: 04-013-0019
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Warning: These data have been obtained from automated instruments and have not been subjected to a quality assurance review to determine their accuracy. They are presented for public awareness and should not be considered final. Conditions such as power outages and equipment malfunctions can produce invalid data. Please note that not every pollutant is measured at every site.

Current Data Historical Data
Particulate Matter 10 micrometers (PM 10)

 
Date & Time: 11-21-2009 8 PM
Last 24-Hours Readings:
Current Readings
AQI*:
Units: µg/m3
TimeIntervalReadings
8:00 PM24 Hour Average61.3750
8:00 PM Hourly Average109.1000


Official Primary Standards
IntervalReadings
24-hour Average150 µg/m3
Annual Average50 µg/m3


*Note: the AQI is based off of the 24-hour average.


Particulate Matter 2.5 micrometers (PM 2.5)

 
Date & Time: 11-21-2009 8 PM
Last 24-Hours Readings:
Current Readings
AQI*:
Units: µg/m3
TimeIntervalReadings
8:00 PM24 Hour Average22.5333
8:00 PM Hourly Average27.5000




*Note: the AQI is based off of the 24-hour average.


Ozone

 
Date & Time: 11-21-2009 8 PM
Last 24-Hours Readings:
Current Readings
AQI*:
Units: ppm
TimeIntervalReadings
8:00 PM8 Hour Average0.0246
8:00 PM Hourly Average0.0032


Official Primary Standards
IntervalReadings
8-hour Average0.075 ppm


*Note: the AQI is based off of the 8-hour average.


Carbon Monoxide

 
Date & Time: 11-21-2009 8 PM
Last 24-Hours Readings:
Current Readings
AQI*:
Units: ppm
TimeIntervalReadings
8:00 PM8 Hour Average0.7750
8:00 PM Hourly Average1.9000


Official Primary Standards
IntervalReadings
8-hour Average9 ppm
1-hour Average35 ppm


*Note: the AQI is based off of the 8-hour average.


Nitrogen Dioxide

 
Date & Time: 11-21-2009 8 PM
Last 24-Hours Readings:
Current Readings
AQI*:
Units: ppm
TimeIntervalReadings
8:00 PM Hourly Average0.0430


Official Primary Standards
IntervalReadings
Annual Average0.053 ppm


*Note: NO2 does not have a short term air quality standard and can only generate an official AQI when the level exceeds 200 (0.65 ppm)- 40CFR58, appx G.


Wind Speed

 
Date & Time: 11-21-2009 8 PM
Last 24-Hours Readings:
Current Readings
AQI*:
Units: mph
TimeIntervalReadings
8:00 PM Hourly Average0.5000







Wind Direction

 
Date & Time: 11-21-2009 8 PM
Last 24-Hours Readings:
Current Readings
AQI*:
Units: degrees
TimeIntervalReadings
8:00 PM Hourly Average94.0000







 


AQI Explained



 For more information about AQI, visit the EPA's website: http://airnow.gov/index.cfm?action=aqibasics.aqi

Maricopa County Air Quality Department 1001 North Central Avenue, Suite 400, Phoenix AZ 85004  (602) 506-6010
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