SMOG WATCH The Houston area often exceeds the federal limit for smog-producing ozone of 75 parts per billion. Maximum eight-hour ozone concentrations during the most recent seven-day period for which readings are available: Ozone concentration by date Monitoring site
5/19
5/20
5/21
5/22
5/23
5/24
5/25
5/26
Sugar Land
78
90
90
44
42
39
46
54
Deer Park
65
75
75
36
36
48
55
56
Clinton Dr.*
57
65
65
32
32
-
46
48
Clear Lake
64
76
76
38
38
46
55
54
Kingwood
51
58
58
27
29
30
42
59
Source: Texas Commission on Environmental Quality
*Ship Channel
CHRONICLE