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Annual Statewide Toxics Summary
Nickel
FAQs
nanograms per cubic meter
Read About Estimated Risk
Year
Months
Present
Minimum
Median
Mean
90th
Percentile
Maximum
Standard
Deviation
Number of
Observations
Detection
Limit
Estimated
Risk
2024
1
1
*
2
7
0.8
154
0.01
*
2023
0.955
0.955
2.0
4
11
1.6
362
1.91
1
2022
0.955
2
3.0
5
29
3.7
390
1.91
2
2021
0.955
3
*
6
40
5.4
312
1.91
*
2020
0.955
0.955
*
5
11
1.9
106
1.91
*
2019
0.955
2
*
6
59
5.3
381
1.91
*
2018
0.955
3
4.0
7
62
5.0
428
1.91
3
2017
0.955
3
3.9
9
31
4.4
420
1.91
3
2016
0.955
0.955
2.7
4
62
5.0
424
1.91
2
2015
0.955
0.955
4.2
5
569
28.5
418
1.91
3
2014
0.95
0.95
2.6
6
23
2.9
398
1.9
2
2013
0.65
3
*
5
37
3.6
431
1.3
*
2012
4.5
4.5
4.9
4.5
90
4.3
463
9
4
2011
4.5
4.5
5.5
4.5
240
12.9
441
9
4
2010
4.5
4.5
4.7
4.5
35
2.0
428
9
3
2009
4.5
4.5
5.2
4.5
36
3.3
520
9
4
2008
*
*
*
*
*
*
0
*
*
2007
4.5
4.5
7.8
16
46
6.6
463
9
6
2006
*
*
*
*
*
*
0
*
*
2005
*
*
*
*
*
*
0
*
*
2004
*
*
*
*
*
*
0
*
*
2003
0.5
2
*
7
290
31.1
86
1
*
2002
0.5
3
4.5
8
35
4.1
491
1
3
2001
1
3
4.5
9
39
4.9
505
2
3
2000
1
3
4.2
8
34
3.8
472
2
3
1999
1
3
3.7
7
44
3.5
565
2
3
1998
1
2
3.4
6
60
4.6
561
2
3
1997
1
3
3.4
7
42
3.4
557
2
2
1996
1
3
3.6
7
49
3.7
595
2
3
1995
1
3
3.7
8
47
3.8
602
2
3
1994
1
3
4.1
8
43
3.6
585
2
3
1993
1
4
4.2
8
24
3.1
575
2
3
1992
1
3
4.1
8
35
3.7
554
2
3
1991
1
4
5.6
11
100
6.1
567
2
4
1990
0.5
4
5.1
10
32
4.1
600
1
4
1989
0.5
4
5.3
10
42
4.6
1005
1
4
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.
