Data from past years

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High pollution data from previous years

Read the number of high pollution nights during previous years across our monitoring sites in Canterbury.

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Number of high pollution nights during previous years

Highest daily concentrations of PM10 during previous years

Second highest daily concentrations of PM10 during previous years

Fourth highest daily concentrations of PM10 during previous years

Annual average concentrations of PM10 during previous years

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Number of high pollution nights during previous years:

	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012
Rangiora	6	5				4	6	13	6	6	4	13	11	12
Kaiapoi			48	31	40	21	25	30	20	21	25	25	25	12
Christchurch airshed	60	44	57	37	49	37	39	30	20	24	16	15	32	19
Christchurch St Albans	54	33	57	31	41	36	31	28	15	19	14	13	26	11
Ashburton	19	21					23	28	15	18	12	15	17	8
Timaru airshed	51	54	57	37	56	45	51	38	39	42	38	40	30	34
Waimate				7	11			11	1	8	10	9	6	11
Geraldine					3	2			1	6	8	4	3	7

Highest daily concentrations of PM₁₀ during previous years:

	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012
Rangiora	76	86				67	88	125	110	63	89*	92	71	76
Kaiapoi			161	145	172	101	160	163	105	87	87	100	111	87
Christchurch airshed	221	223	228	222	137	139	155	184	131	152	108	99	111	95
Christchurch St Albans	200	187	228	222	137	139	148	184	121	88	86	92	111	92
Ashburton	89	94					86	137	92	92	130*	81	87	100
Timaru airshed	166	176	168	113	169	125	111	192	100	109	131	141	115	131
Waimate				56	86			95	51	60	112*	97	61	84
Geraldine					53	52			54	72	94*	58	55	72

Second highest daily concentrations of PM₁₀ during previous years:

	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012
Rangiora	67	84				57	67	91	64	62	55	85	69	65
Kaiapoi			131	131	121	91	96	147	91	86	85*	96	88	83
Christchurch airshed	221	161	179	167	136	139	143	172	121	98	86	92	97	92
Christchurch St Albans	185	146	179	167	136	139	143	172	100	86	84	73	97	80
Ashburton	76	82					76	105	74	86	78	80	79	85
Timaru airshed	116	154	141	112	131	117	108	132	93	96	123	118	110	110
Waimate				56	76			63	45	60	90	70	58	69
Geraldine					53	51			50	59	67	57	53	64

Fourth highest daily concentrations of PM₁₀ during previous years:

	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012
Rangiora	57	57				55	60	87	57	60	51	62	64	62
Kaiapoi			119	117	104	85	86	105	78	75	79	88	81	63
Christchurch airshed	178	136	155	146	104	105	104	118	82	86	81	72	90	76
Christchurch St Albans	178	128	150	146	104	105	101	118	82	82	77	72	89	75
Ashburton	72	70					71	89	64	82	73	66	70	55
Timaru airshed	105	127	119	112	126	104	97	114	81	87	95	106	97	104
Waimate				56	62			57	40	53	67	60	57	65
Geraldine					49	46			45	56	58	51	49	61

Annual average concentrations of PM₁₀ during previous years:

	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012
Rangiora	16	15				16	17	18	18	21	18	18	17
Kaiapoi			32	26	29	25	25	24	21	23	22	25	22
Christchurch airshed	34	28	32	28	30	26	27	25	26	26	23	23	26
Christchurch St Albans	30	25	31	26	26	23	22	21	19	20	20	18	22
Ashburton	24	24					26	26	21	24	23	22	23
Timaru airshed	26	29	29	24	29	26	28	27	25	28	29	31	28
Waimate				17	20				15		20	21	17
Geraldine					18	17			18	21	22	19	19

* Dust event of 14 September 2009