Sites with benzene data available Available Substances Toxics Statistics Home Page Data Descriptions Page
California Home ARB: Home Search Site Map Contact Us
California Air Resources Board

Annual Toxics Summary
ARB's ADAM Air Quality Database
Upland-San Bernardino Road FAQs
Benzene
parts per billion
Read About Estimated Risk
Year Months
Present
Minimum Median Mean 90th
Percentile
Maximum Standard
Deviation
Number of
Observations
Detection
Limit
Estimated
Risk
2023
* * * * * * 0 * *
2022
* * * * * * 0 * *
2021
* * * * * * 0 * *
2020
* * * * * * 0 * *
2019
* * * * * * 0 * *
2018
* * * * * * 0 * *
2017
* * * * * * 0 * *
2016
* * * * * * 0 * *
2015
* * * * * * 0 * *
2014
* * * * * * 0 * *
2013
* * * * * * 0 * *
2012
* * * * * * 0 * *
2011
* * * * * * 0 * *
2010
* * * * * * 0 * *
2009
* * * * * * 0 * *
2008
* * * * * * 0 * *
2007
* * * * * * 0 * *
2006
* * * * * * 0 * *
2005
* * * * * * 0 * *
2004
* * * * * * 0 * *
2003
* * * * * * 0 * *
2002
* * * * * * 0 * *
2001
* * * * * * 0 * *
2000
* * * * * * 0 * *
1999
* * * * * * 0 * *
1998
* * * * * * 0 * *
1997
0.5 1.0 1.11 1.4 2.1 0.37 30 0.2 289
1996
0.25 1.1 1.11 1.9 2.2 0.53 28 0.5 288
1995
0.25 1.7 1.62 2.6 3.1 0.71 31 0.5 420
1994
1.0 2.0 2.15 3.1 3.6 0.61 31 0.5 559
1993
0.25 2.0 1.92 2.7 4.2 0.85 29 0.5 500
1992
1.2 2.1 2.14 2.9 3.6 0.64 27 0.5 557
1991
1.0 2.7 2.70 3.8 5.3 1.01 28 0.5 703
1990
1.2 2.6 2.73 3.6 5.4 0.93 27 0.5 711
1989
1.5 3.1 3.44 5.2 6.4 1.20 20 0.5 894
Graph It!
Notes Values below the Limit of Detection (LoD) assumed to be ½ LoD.
Means and risks shown only for years with data in all 12 months.
"*" means there was insufficient or no data available to determine the value.