Oklahoma Department of Environmental Quality
				2018 OKLAHOMA PM2.5
				Highest 24 Hour Averages (µg/m3) through December 31, 2018
Site			2018 Daily Max 24-hr Averages
2015	2016	2017	1st	2nd	3rd	4th	5th	6th	7th	8th	15-17 Avg	16-18 Avg	2018
98th %	98th %	98th %	(date)	(date)	(date)	(date)	(date)	(date)	(date)	(date)	98th %	98th %	Critical Value
Moore  (049)			43.8	30.2	29.4	28.5	27.2	24.8	23.1	23.0	17.1	18.8	73.0
17.7	17.4	16.1	13-Apr	22-Mar	8-Mar	18-Mar	1-Jul	10-Dec	2-Jul	14-Mar
Glenpool  (174)			33.5	28.9	28.0	26.8	25.1	24.8	24.8	23.2	20.3	22.2	63.2
17.5	22.3	21.0	24-Mar	1-Jul	3-Jul	2-Jul	5-Jul	22-Mar	22-Aug	18-Mar
Oklahoma Union (207)			28.8	27.5	27.0	27.0	26.4	24.1	24.0	23.9
(new in 2018)			10-Apr	10-Mar	14-Mar	3-Jul	15-Mar	22-Mar	18-Mar	1-Jul
Copan (217)			moved to Oklahoma Union in 2018
	20.6	19.2
Healdton (297)			46.3	36.2	35.4	28.0	26.7	25.3	24.5	24.0		16.7	80.4
closed	10.3	15.8	17-Jul	18-Jul	16-Jul	1-Jul	30-Jun	11-Jun	25-Mar	14-Aug
McAlester  (415)			33.3	32.9	32.7	31.4	29.9	29.5	27.4	27.2	16.9	21.1	70.4
14.7	17.1	19.0	2-Jul	8-Mar	15-Mar	14-Mar	1-Jul	3-Jul	14-Aug	30-Jun
Ponca City (604)			40.8	32.0	30.5	30.0	25.5	24.0	20.7	20.3	16.7	18.0	72.9
16.5	16.2	17.4	29-Aug	22-Mar	21-Mar	18-Mar	10-Apr	2-Jul	3-Jul	10-Mar
Lawton (651)			28.6	27.4	21.8	21.3	19.4	18.1	17.7	17.3	15.2	15.5	77.3
16.4	15.4	13.8	17-Jul	18-Jul	1-Jul	24-Aug	16-Jul	2-Jul	30-Jun	9-Dec
Seiling (860)			24.9	23.9	22.5	21.7	20.5	20.1	18.1	17.3	14.3	15.0	78.8
15.3	13.5	14.2	18-Mar	2-Jul	11-Aug	22-Aug	17-Jul	25-Mar	21-Aug	17-Apr
OCUSA (1037)			28.5	28.2	27.6	27.5	23.6	22.5	22.1	21.8	18.1	19.4	70.2
17.9	18.3	18.0	13-Apr	18-Mar	22-Mar	1-Jul	25-Mar	2-Jul	22-Aug	17-Jul
Tulsa (1127)			31.3	31.0	30.6	29.0	28.7	27.8	27.1	27.0	20.6	24.5	60.0
15.4	21.8	24.7	14-Mar	5-Jul	22-Aug	25-Aug	9-Apr	18-Mar	10-Mar	12-Mar
Near Road (097)			33.9	26.0	22.3	22.2	19.5	18.9	18.8	17.5
(new in 2018)			13-Apr	1-Jul	2-Jul	17-Jul	22-Aug	19-Jul	11-Jun	18-Jul
8th Highs are considered 98th percentile until end of year data completeness can be calculated.