Mass DEP :: MA DEP 2002 Ozone Season

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2002 Ozone Season Data & Summary

Color-coded review of daily peak 8-hour-averaged ozone concentrations at all Massachusetts state ozone monitors.

This page lists the 2002 season daily peak 8-hour-averaged ozone concentrations, colored according to Air Quality Index categories (see explanation of colors), at all Massachusetts state ozone monitors. Values shown are preliminary. Quality assurance checks may, for a small number of values, result in slight changes or invalidation. PPB refers to ozone concentration in parts of ozone per billion parts of air. "M" denotes missing data. See the summary below.

May 2002 Peak 8-HR Ozone Concentration (PPB) at MA Monitors
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Date	Adams	Aga- wam	Am- herst	Blue Hill	Chic- opee	Fair- haven	Law- rence	L. Island	Lynn	New- bury	Rox- bury	Stow	Truro	Ware	Wor- cester
5/1	39	41	38	48	39	42	37	42	43	43	29	47	48	43	46
5/2	48	37	39	50	37	51	39	50	44	53	23	39	55	48	44
5/3	22	43	40	47	40	45	39	43	43	42	32	43	48	41	46
5/4	40	53	54	61	52	47	46	50	51	52	39	55	55	56	60
5/5	46	48	61	72	59	60	57	58	53	59	54	65	58	64	70
5/6	55	68	65	75	67	57	68	66	60	68	52	75	62	70	78
5/7	42	54	51	60	55	48	51	55	51	55	42	63	52	57	65
5/8	38	41	43	44	49	39	37	43	39	44	33	41	42	49	48
5/9	35	31	32	39	35	40	28	40	34	43	21	27	43	36	33
5/10	29	61	60	68	63	53	55	55	61	61	46	61	61	60	49
5/11	43	58	49	57	58	55	42	47	48	46	40	50	55	51	40
5/12	45	36	37	62	45	55	42	60	52	55	53	47	63	45	38
5/13	45	41	43	60	49	53	46	59	49	56	43	48	60	47	42
5/14	36	45	38	48	46	51	39	43	44	48	32	43	53	44	37
5/15	27	50	48	48	47	45	39	41	42	42	29	43	45	47	38
5/16	31	63	58	69	60	78	48	60	53	63	46	63	82	60	52
5/17	24	49	45	55	51	61	37	42	48	51	37	47	67	48	41
5/18	31	33	32	42	37	38	30	39	36	41	26	32	40	36	31
5/19	32	43	41	51	46	47	40	43	46	43	40	44	48	42	34
5/20	30	45	41	47	46	45	36	37	39	41	31	43	41	44	33
5/21	19	37	34	40	39	38	29	31	35	34	22	35	37	36	28
5/22	20	50	50	58	54	47	43	48	48	47	40	52	50	51	37
5/23	51	58	56	68	59	56	53	59	57	59	48	64	63	59	52
5/24	31	73	70	88	79	71	65	69	76	75	57	78	84	75	65
5/25	39	48	46	46	51	37	31	36	35	36	32	44	36	46	40
5/26	37	33	31	46	35	37	32	43	39	40	36	44	43	36	30
5/27	46	53	59	59	60	50	42	39	45	39	34	49	52	59	40
5/28	41	28	30	31	31	44	24	35	26	42	15	26	39	46	37
5/29	34	36	39	39	44	36	20	30	28	37	16	29	32	45	32
5/30	48	46	47	38	50	28	43	35	37	42	23	46	24	51	41
5/31	56	42	41	46	45	46	47	39	46	51	38	46	42	51	40

June 2002 Peak 8-HR Ozone Concentration (PPB) at MA Monitors
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Date	Adams	Aga- wam	Am- herst	Blue Hill	Chic- opee	Fair- haven	Law- rence	L. Island	Lynn	New- bury	Rox- bury	Stow	Truro	Ware	Wor- cester
6/1	58	59	60	67	62	75	54	56	64	60	47	62	73	61	54
6/2	56	49	47	60	53	50	49	51	60	56	49	51	54	53	45
6/3	37	44	40	49	46	48	40	49	49	46	34	41	46	43	33
6/4	47	47	54	58	59	47	37	47	43	44	45	50	49	M	47
6/5	57	47	45	52	49	52	40	44	43	47	40	52	50	44	43
6/6	44	24	25	36	32	39	26	32	30	36	27	36	36	31	M
6/7	30	33	32	36	39	36	26	34	35	38	15	30	35	M	29
6/8	50	50	50	48	53	40	36	35	37	38	31	51	35	M	38
6/9	58	60	58	71	65	51	50	54	64	58	51	57	54	M	53
610	48	53	42	57	52	44	37	45	45	44	32	43	46	42	36
6/11	71	83	66	81	92	67	51	65	70	41	51	80	71	89	79
6/12	61	23	22	36	30	36	M	35	37	38	27	27	41	M	25
6/13	32	27	31	32	28	35	25	36	32	36	21	30	39	21	20
6/14	31	28	23	39	31	40	29	35	35	38	23	28	44	33	27
6/15	31	28	27	41	33	41	28	37	37	40	25	30	46	34	30
6/16	32	21	19	31	25	49	25	33	32	34	24	23	46	31	23
6/17	34	41	37	54	42	57	35	38	48	44	31	43	52	39	35
6/18	40	45	42	50	48	56	32	34	46	47	26	38	55	46	35
6/19	46	75	52	M	67	67	46	60	61	52	39	48	63	64	52
6/20	71	74	70	M	78	58	57	62	66	68	45	73	58	69	68
6/21	71	90	86	M	97	55	88	89	89	94	69	92	59	95	81
6/22	64	60	41	M	58	65	40	59	60	47	51	50	72	51	52
6/23	61	75	52	M	73	64	67	79	82	62	77	87	71	71	70
6/24	44	59	40	M	56	56	39	47	54	42	41	52	53	50	46
6/25	64	71	66	M	71	57	57	62	55	59	43	61	57	67	51
6/26	72	74	67	M	88	68	80	97	109	91	71	96	80	85	83
6/27	53	61	55	82	68	67	57	72	76	64	M	66	75	63	61
6/28	45	43	37	58	49	61	37	M	54	55	M	41	63	41	M
6/29	39	47	34	51	41	40	39	M	42	40	M	46	32	42	M
6/30	51	72	60	68	74	45	51	M	61	59	M	64	38	M	M

July 2002 Peak 8-HR Ozone Concentration (PPB) at MA Monitors
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Date	Adams	Aga- wam	Am- herst	Blue Hill	Chic- opee	Fair- haven	Law- rence	L. Island	Lynn	New- bury	Rox- bury	Stow	Truro	Ware	Wor- cester
7/1	67	58	67	83	69	87	56	74	74	66	41	64	81	64	59
7/2	68	54	63	81	67	105	55	69	78	73	45	57	99	62	56
7/3	59	50	49	79	63	86	60	102	98	81	M	49	93	56	M
7/4	51	46	47	58	53	81	46	63	58	53	40	44	86	44	M
7/5	34	41	32	42	41	41	32	36	43	38	30	39	41	38	32
7/6	39	40	36	44	44	47	30	33	42	37	30	34	45	38	31
7/7	44	36	34	33	41	30	23	23	34	35	22	30	32	38	29
7/8	60	56	55	88	58	77	45	74	83	56	71	69	78	56	57
7/9	72	73	55	103	83	72	59	86	100	80	69	81	74	77	74
7/10	31	35	32	42	36	45	24	36	32	38	28	31	40	36	29
7/11	31	33	30	38	34	21	22	34	38	34	26	30	35	33	27
7/12	43	45	46	62	51	53	44	53	54	55	41	46	54	59	43
7/13	75	81	66	79	83	57	59	81	71	66	78	61	61	79	71
7/14	70	75	73	89	80	47	79	79	86	88	74	82	42	77	71
7/15	51	50	53	81	59	66	55	64	75	74	53	62	54	57	69
7/16	31	37	33	M	36	45	24	40	38	37	32	31	42	34	38
7/17	80	69	55	65	66	51	42	49	47	45	45	65	55	70	76
7/18	78	80	68	83	84	104	57	67	78	64	M	63	105	70	74
7/19	45	61	34	53	68	80	M	36	42	M	27	32	74	54	43
7/20	36	44	33	32	37	30	M	29	31	M	22	34	49	34	40
7/21	51	58	57	52	64	38	38	49	50	M	46	49	33	64	58
7/22	74	97	91	66	108	41	78	64	76	81	56	76	45	M	89
7/23	64	61	55	84	68	56	71	80	83	79	56	75	58	66	94
7/24	19	42	32	28	40	24	20	26	25	27	12	28	27	37	35
7/25	37	48	40	34	52	30	30	M	32	33	27	40	32	47	48
7/26	42	44	40	33	49	30	28	31	31	31	23	29	32	42	42
7/27	47	23	28	31	29	32	28	28	29	32	22	28	33	30	31
7/28	50	19	28	49	32	49	41	40	40	44	38	33	40	34	45
7/29	59	52	49	60	60	64	45	49	57	51	33	48	74	55	55
7/30	50	55	48	64	58	73	47	51	59	51	37	50	88	50	54
7/31	47	47	40	57	47	75	45	60	52	M	33	40	60	40	40

August 2002 Peak 8-HR Ozone Concentration (PPB) at MA Monitors
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Date	Adams	Aga- wam	Am- herst	Blue Hill	Chic- opee	Fair- haven	Law- rence	L. Island	Lynn	New- bury	Rox- bury	Stow	Truro	Ware	Wor- cester
8/1	53	65	48	74	61	62	55	56	53	46	33	69	50	59	50
8/2	56	61	48	71	66	43	51	45	42	39	36	61	28	52	56
8/3	50	56	45	86	61	76	53	61	68	61	61	53	70	48	52
8/4	74	84	65	84	92	83	58	77	88	78	60	69	80	77	76
8/5	59	46	49	76	58	80	58	69	72	66	50	62	84	57	68
8/6	22	28	23	31	29	33	27	29	35	29	26	26	43	28	28
8/7	28	30	29	41	33	44	32	35	39	32	30	31	42	31	33
8/8	30	30	28