Sites with molybdenum 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
San Francisco-Arkansas Street FAQs
Molybdenum
nanograms per cubic meter
Year Months
Present		 Minimum Median Mean 90th
Percentile		 Maximum Standard
Deviation		 Number of
Observations		 Detection
Limit
2025
0.65 0.65 * 0.65 0.65 0.00 16 1.3
2024
0.65 0.65 0.65 0.65 0.65 0.00 30 1.3
2023
0.65 0.65 0.68 0.65 1.4 0.14 26 1.3
2022
0.65 0.65 0.69 0.65 1.5 0.15 31 1.3
2021
0.65 0.65 * 0.65 0.65 0.00 23 1.3
2020
0.65 * * * 1.4 0.25 9 1.3
2019
0.65 0.65 0.80 1.4 1.8 0.31 29 1.3
2018
0.65 0.65 1.05 1.6 4.2 0.74 30 1.3
2017
0.65 0.65 0.94 0.65 2.7 0.55 28 1.3
2016
0.65 0.65 0.92 1.6 2.2 0.49 30 1.3
2015
0.65 0.65 0.93 1.8 2.4 0.54 30 1.3
2014
0.85 0.85 0.89 0.85 1.9 0.19 30 1.7
2013
0.75 0.75 * 0.75 2.3 0.34 28 1.5
2012
0.75 0.75 0.79 0.75 1.6 0.16 29 1.5
2011
0.75 0.75 * 0.75 1.6 0.16 27 1.5
2010
0.75 0.75 0.91 1.8 2.2 0.41 30 1.5
2009
0.75 0.75 0.75 0.75 0.75 0.00 31 1.5
2008
* * * * * * 0 *
2007
0.75 0.75 * 2.3 3.5 0.80 26 1.5
2006
* * * * * * 0 *
2005
* * * * * * 0 *
2004
* * * * * * 0 *
2003
4.0 * * * 22 8.09 6 2.0
2002
2.0 1 3.68 7.1 17 3.97 30 2.0
2001
2 2 2.39 2 12 1.91 31 4.0
2000
2 2 * 5.2 10 2.07 19 4.0
1999
2 2 * 2 2 0.00 20 4.0
1998
2 2 2.00 2 2 0.00 26 4.0
1997
2 2 2.14 2 5.0 0.67 28 4.0
1996
2 2 2.50 5.0 5.0 1.10 26 4.0
1995
2 2 2.00 2 2 0.00 30 4.0
1994
2 2 2.31 4.1 5.0 0.96 30 4.0
1993
2 2 2.38 2 6.0 1.00 27 4.0
1992
2 2 * 2 2 0.00 16 4.0
1991
2 2 * 2 2 0.00 25 4.0
1990
2 2 * 2 2 0.00 14 4.0
1989
* * * * * * 0 *
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.