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AQI Forecast by County
Saturday, November 18
Sat Sun
Placer
57
80
Sacramento
80
91
Yolo-Solano
61
70

Air Quality Map
The map below is a 1-hour snapshot. Click to view all hours recorded since midnight.
Current map


2017 Summer Smog Season (May - October)
AQI Forecast based on 2008 federal 8-hour ozone health standard*

May Region Yolo-Solano Sacramento Placer El Dorado
Mon. 5/1 50 48 50 49 48
Tue. 5/2 50 48 50 49 48
Wed. 5/3 97 61 97 80 80
Thu. 5/4 100 67 100 84 87
Fri. 5/5 51 48 51 61 67
Sat. 5/6 46 43 46 48 48
Sun. 5/7 50 48 50 50 46
Mon. 5/8 64 51 64 54 49
Tue. 5/9 84 67 84 74 58
Wed. 5/10 51 49 51 51 51
Thu. 5/11 50 46 50 50 48
Fri. 5/12 43 41 43 43 49
Sat. 5/13 47 48 47 46 44
Sun. 5/14 50 44 50 49 49
Mon. 5/15 50 47 50 50 50
Tue. 5/16 42 38 42 40 39
Wed. 5/17 49 46 49 46 44
Thu. 5/18 54 51 54 54 54
Fri. 5/19 80 64 80 90 80
Sat. 5/20 100 84 100 100 97
Sun. 5/21 105 80 105 101 101
Mon. 5/22 119 84 119 115 115
Tue. 5/23 119 93 119 122 122
Wed. 5/24 97 58 97 101 101
Thu. 5/25 51 49 51 54 54
Fri. 5/26 47 42 47 51 50
Sat. 5/27 54 48 54 58 51
Sun. 5/28 74 51 74 80 77
Mon. 5/29 93 67 93 100 100
Tue. 5/30 50 48 50 67 67
Wed. 5/31 46 46 46 50 50
June Region Yolo-Solano Sacramento Placer El Dorado
Thu. 6/1 71 54 71 77 77
Fri. 6/2 87 80 87 97 97
Sat. 6/3 74 61 74 90 87
Sun. 6/4 51 51 51 64 67
Mon. 6/5 71 64 71 74 77
Tue. 6/6 93 74 93 93 97
Wed. 6/7 64 51 64 74 77
Thu. 6/8 47 44 47 50 50
Fri. 6/9 49 46 49 50 50
Sat. 6/10 41 39 41 43 43
Sun. 6/11 38 37 38 37 37
Mon. 6/12 44 44 44 45 47
Tue. 6/13 51 49 51 51 51
Wed. 6/14 71 61 71 67 71
Thu. 6/15 84 71 84 84 87
Fri. 6/16 67 61 67 74 74
Sat. 6/17 80 51 80 80 87
Sun. 6/18 84 50 84 84 84
Mon. 6/19 101 80 101 105 112
Tue. 6/20 122 80 122 122 122
Wed. 6/21 126 74 126 119 126
Thu. 6/22 90 51 90 80 87
Fri. 6/23 119 80 119 119 126
Sat. 6/24 93 51 93 105 108
Sun. 6/25 80 50 80 93 97
Mon. 6/26 61 44 61 71 67
Tue. 6/27 46 44 46 50 50
Wed. 6/28 61 51 61 71 74
Thu. 6/29 87 61 87 100 100
Fri. 6/30 100 58 100 101 101
July Region Yolo-Solano Sacramento Placer El Dorado
Sat. 7/1 119 77 119 126 126
Sun. 7/2 101 71 101 112 115
Mon. 7/3 101 67 101 115 112
Tue. 7/4 101 58 101 112 108
Wed. 7/5 90 48 90 101 105
Thu. 7/6 108 50 108 126 126
Fri. 7/7 115 54 115 112 119
Sat. 7/8 115 74 115 122 122
Sun. 7/9 101 67 101 119 119
Mon. 7/10 93 67 93 100 100
Tue. 7/11 80 51 80 84 77
Wed. 7/12 77 51 77 84 80
Thu. 7/13 80 51 80 87 93
Fri. 7/14 100 67 100 105 105
Sat. 7/15 122 84 122 122 122
Sun. 7/16 100 74 100 101 101
Mon. 7/17 101 64 101 105 105
Tue. 7/18 84 50 84 93 90
Wed. 7/19 108 64 108 115 108
Thu. 7/20 90 51 90 105 105
Fri. 7/21 126 77 126 133 126
Sat. 7/22 133 87 133 136 133
Sun. 7/23 115 71 115 129 126
Mon. 7/24 97 58 97 105 105
Tue. 7/25 77 51 77 93 87
Wed. 7/26 105 67 105 112 112
Thu. 7/27 126 87 126 133 129
Fri. 7/28 101 64 101 112 108
Sat. 7/29 100 71 100 101 101
Sun. 7/30 108 61 108 122 122
Mon. 7/31 112 61 112 122 119
August Region Yolo-Solano Sacramento Placer El Dorado
Tue. 8/1 129 67 129 133 133
Wed. 8/2 101 58 101 126 126
Thu. 8/3 101 61 101 126 126
Fri. 8/4 100 54 100 112 112
Sat. 8/5 100 61 100 105 105
Sun. 8/6 100 61 100 101 101
Mon. 8/7 93 54 93 101 101
Tue. 8/8 100 58 100 101 101
Wed. 8/9 105 61 105 112 108
Thu. 8/10 112 71 112 119 115
Fri. 8/11 105 64 105 112 108
Sat. 8/12 100 61 100 101 101
Sun. 8/13 80 51 80 90 87
Mon. 8/14 51 46 51 51 51
Tue. 8/15 50 46 50 54 54
Wed. 8/16 67 50 67 80 80
Thu. 8/17 100 58 100 100 100
Fri. 8/18 108 67 108 112 108
Sat. 8/19 108 58 108 119 119
Sun. 8/20 101 67 101 115 115
Mon. 8/21 64 50 64 74 64
Tue. 8/22 51 46 51 61 51
Wed. 8/23 61 50 61 77 74
Thu. 8/24 87 54 87 93 87
Fri. 8/25 90 61 90 101 101
Sat. 8/26 105 54 105 112 108
Sun. 8/27 101 80 101 101 101
Mon. 8/28 126 101 126 129 126
Tue. 8/29 122 67 122 129 129
Wed. 8/30 100 51 100 101 101
Thu. 8/31 108 74 108 108 112
September Region Yolo-Solano Sacramento Placer El Dorado
Fri. 9/1 133 101 133 133 133
Sat. 9/2 133 101 133 140 140
Sun. 9/3 133 100 133 133 133
Mon. 9/4 115 90 115 129 129
Tue. 9/5 101 90 101 108 105
Wed. 9/6 90 67 90 100 100
Thu. 9/7 51 46 51 54 54
Fri. 9/8 74 51 74 87 84
Sat. 9/9 97 64 97 100 100
Sun. 9/10 101 84 101 101 101
Mon. 9/11 108 67 108 115 115
Tue. 9/12 51 50 51 61 61
Wed. 9/13 48 44 48 49 49
Thu. 9/14 44 41 44 45 45
Fri. 9/15 50 46 50 50 50
Sat. 9/16 61 50 61 67 67
Sun. 9/17 51 42 51 54 51
Mon. 9/18 50 48 50 51 58
Tue. 9/19 67 54 67 74 67
Wed. 9/20 49 44 49 50 50
Thu. 9/21 36 36 36 37 37
Fri. 9/22 43 42 43 44 44
Sat. 9/23 43 40 43 42 42
Sun. 9/24 48 46 48 48 47
Mon. 9/25 47 45 47 46 46
Tue. 9/26 48 46 48 48 48
Wed. 9/27 64 50 64 67 61
Thu. 9/28 80 61 80 84 84
Fri. 9/29 54 49 54 67 67
Sat. 9/30 51 51 51 50 50
October Region Yolo-Solano Sacramento Placer El Dorado
Sun. 10/1 45 37 45 44 44
Mon. 10/2 39 39 39 40 41
Tue. 10/3 44 44 44 44 43
Wed. 10/4 50 50 50 50 49
Thu. 10/5 46 45 46 47 47
Fri. 10/6 50 49 50 54 54
Sat. 10/7 46 51 71 74 74
Sun. 10/8 46 44 46 48 49
Mon. 10/9 44 42 44 45 46
Tue. 10/10 67 67 67 67 67
Wed. 10/11 67 67 67 67 67
Thu. 10/12 51 49 51 51 51
Fri. 10/13 47 41 47 49 49
Sat. 10/14 45 42 45 46 46
Sun. 10/15 51 51 51 61 61
Mon. 10/16 67 67 67 51 51
Tue. 10/17 74 77 74 64 61
Wed. 10/18 51 51 51 58 58
Thu. 10/19 49 50 49 50 50
Fri. 10/20 41 37 41 42 50
Sat. 10/21 42 50 42 43 42
Sun. 10/22 45 44 45 44 44
Mon. 10/23 51 51 51 51 51
Tue. 10/24 61 50 61 61 64
Wed. 10/25 67 51 67 71 71
Thu. 10/26 80 48 80 80 80
Fri. 10/27 84 51 84 90 90
Sat. 10/28 74 50 74 77 80
Sun. 10/29 64 44 64 77 71
Mon. 10/30 49 45 49 50 50
Tue. 10/31 51 47 51 51 51
November Region Yolo-Solano Sacramento Placer El Dorado
Wed. 11/1 46 45 46 46 49
Thu. 11/2 42 42 42 41 37
Fri. 11/3 28 28 28 30 40
Sat. 11/4 28 28 28 28 37
Sun. 11/5 28 N/A 28 28 35

* Forecast values displayed are the next-day forecasts for that date, meaning they were issued on the previous day.