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AQI Forecast by County
Tuesday, October 23
Tue Wed
El Dorado
54
61
Placer
58
67
Sacramento
50
61
Yolo-Solano
48
50

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


2018 Summer Smog Season (May - October)
AQI Forecast based on 2008 federal 8-hour ozone health standard*

May Region Yolo-Solano Sacramento Placer El Dorado
Tue. 5/1 47 46 47 54 54
Wed. 5/2 49 46 49 54 54
Thu. 5/3 54 48 54 61 61
Fri. 5/4 67 51 67 67 74
Sat. 5/5 74 58 74 74 80
Sun. 5/6 51 46 51 51 61
Mon. 5/7 74 54 74 77 80
Tue. 5/8 64 50 64 74 77
Wed. 5/9 49 44 49 51 51
Thu. 5/10 67 51 67 74 80
Fri. 5/11 50 42 50 49 46
Sat. 5/12 50 44 50 50 50
Sun. 5/13 46 43 46 46 50
Mon. 5/14 44 43 44 43 44
Tue. 5/15 46 40 46 39 47
Wed. 5/16 42 42 42 39 45
Thu. 5/17 51 49 51 50 51
Fri. 5/18 49 45 49 51 49
Sat. 5/19 50 45 50 51 50
Sun. 5/20 46 44 46 49 48
Mon. 5/21 51 45 51 61 67
Tue. 5/22 44 39 44 46 47
Wed. 5/23 39 37 39 42 43
Thu. 5/24 39 38 39 45 42
Fri. 5/25 38 33 38 37 37
Sat. 5/26 51 46 51 50 51
Sun. 5/27 74 61 74 71 74
Mon. 5/28 80 61 80 74 77
Tue. 5/29 108 100 108 112 112
Wed. 5/30 50 48 50 51 51
Thu. 5/31 41 40 41 44 44
June Region Yolo-Solano Sacramento Placer El Dorado
Fri. 6/1 48 44 48 46 46
Sat. 6/2 108 93 108 100 100
Sun. 6/3 74 67 101 105 108
Mon. 6/4 93 61 93 100 87
Tue. 6/5 71 51 71 74 67
Wed. 6/6 51 48 51 54 74
Thu. 6/7 61 49 61 67 71
Fri. 6/8 71 54 71 80 87
Sat. 6/9 50 50 50 50 50
Sun. 6/10 47 44 47 46 48
Mon. 6/11 51 50 51 51 51
Tue. 6/12 105 74 105 112 108
Wed. 6/13 115 87 115 126 126
Thu. 6/14 105 80 105 115 115
Fri. 6/15 74 67 74 84 80
Sat. 6/16 49 49 49 51 51
Sun. 6/17 48 43 48 61 58
Mon. 6/18 71 50 71 80 80
Tue. 6/19 100 67 100 101 101
Wed. 6/20 93 58 93 100 100
Thu. 6/21 108 80 108 115 112
Fri. 6/22 105 67 105 108 105
Sat. 6/23 61 50 61 71 71
Sun. 6/24 67 44 67 100 100
Mon. 6/25 58 50 58 64 67
Tue. 6/26 105 77 105 112 108
Wed. 6/27 67 50 67 84 80
Thu. 6/28 93 80 93 105 105
Fri. 6/29 67 54 67 87 84
Sat. 6/30 51 44 51 67 71
July Region Yolo-Solano Sacramento Placer El Dorado
Sun. 7/1 77 47 77 93 90
Mon. 7/2 100 51 100 101 101
Tue. 7/3 101 54 101 108 101
Wed. 7/4 100 51 100 108 108
Thu. 7/5 101 51 101 119 122
Fri. 7/6 93 51 93 105 105
Sat. 7/7 84 50 84 97 93
Sun. 7/8 74 46 74 90 93
Mon. 7/9 64 45 64 71 74
Tue. 7/10 74 47 74 93 93
Wed. 7/11 84 64 84 101 101
Thu. 7/12 74 50 74 84 84
Fri. 7/13 101 51 101 112 112
Sat. 7/14 101 61 101 108 105
Sun. 7/15 100 77 100 101 101
Mon. 7/16 101 77 101 119 115
Tue. 7/17 108 84 108 119 115
Wed. 7/18 105 84 105 126 126
Thu. 7/19 108 67 108 119 122
Fri. 7/20 101 61 101 101 108
Sat. 7/21 101 51 101 108 108
Sun. 7/22 105 61 105 105 108
Mon. 7/23 101 67 101 108 108
Tue. 7/24 100 71 100 112 105
Wed. 7/25 108 74 108 119 115
Thu. 7/26 105 58 105 112 108
Fri. 7/27 126 90 126 133 129
Sat. 7/28 126 84 126 143 133
Sun. 7/29 105 74 105 136 133
Mon. 7/30 126 80 126 143 143
Tue. 7/31 108 67 108 133 126
August Region Yolo-Solano Sacramento Placer El Dorado
Wed. 8/1 108 61 108 133 133
Thu. 8/2 133 58 133 140 129
Fri. 8/3 115 54 115 126 126
Sat. 8/4 126 54 126 151 151
Sun. 8/5 126 61 126 133 133
Mon. 8/6 126 67 126 140 140
Tue. 8/7 133 61 133 151 151
Wed. 8/8 126 84 N/A N/A 140
Thu. 8/9 105 67 N/A N/A 133
Fri. 8/10 100 55 100 133 133
Sat. 8/11 101 64 101 122 122
Sun. 8/12 74 50 74 108 108
Mon. 8/13 51 46 51 64 64
Tue. 8/14 100 77 100 105 101
Wed. 8/15 100 67 100 119 112
Thu. 8/16 93 71 93 119 115
Fri. 8/17 108 80 108 122 122
Sat. 8/18 115 87 115 133 126
Sun. 8/19 108 80 108 129 126
Mon. 8/20 99 85 99 101 105
Tue. 8/21 93 80 93 100 95
Wed. 8/22 87 70 87 93 90
Thu. 8/23 80 64 80 93 90
Fri. 8/24 105 84 105 112 112
Sat. 8/25 108 90 108 119 115
Sun. 8/26 93 64 93 108 105
Mon. 8/27 90 54 90 100 100
Tue. 8/28 80 61 80 100 97
Wed. 8/29 84 61 84 97 93
Thu. 8/30 48 46 48 51 50
Fri. 8/31 67 50 67 77 80
September Region Yolo-Solano Sacramento Placer El Dorado
Sat. 9/1 74 51 74 93 90
Sun. 9/2 93 71 93 101 101
Mon. 9/3 108 87 108 115 115
Tue. 9/4 100 61 100 108 108
Wed. 9/5 77 49 77 112 100
Thu. 9/6 105 58 105 119 112
Fri. 9/7 108 58 108 122 115
Sat. 9/8 101 50 101 112 101
Sun. 9/9 100 46 100 100 100
Mon. 9/10 61 44 61 67 90
Tue. 9/11 50 37 50 50 50
Wed. 9/12 46 35 46 50 50
Thu. 9/13 50 44 50 50 50
Fri. 9/14 64 50 64 71 74
Sat. 9/15 50 48 50 67 64
Sun. 9/16 51 45 51 61 61
Mon. 9/17 49 45 49 50 50
Tue. 9/18 46 44 46 49 51
Wed. 9/19 64 46 64 71 67
Thu. 9/20 71 48 71 77 80
Fri. 9/21 84 46 84 100 100
Sat. 9/22 100 46 100 105 101
Sun. 9/23 93 51 93 100 100
Mon. 9/24 100 49 100 97 100
Tue. 9/25 101 50 101 105 108
Wed. 9/26 105 67 105 112 115
Thu. 9/27 112 67 112 129 126
Fri. 9/28 77 48 77 100 100
Sat. 9/29 50 44 50 54 54
Sun. 9/30 45 42 45 67 64
October Region Yolo-Solano Sacramento Placer El Dorado
Mon. 10/1 46 44 46 58 58
Tue. 10/2 40 37 40 44 46
Wed. 10/3 40 36 40 42 44
Thu. 10/4 39 36 39 39 44
Fri. 10/5 48 46 48 49 49
Sat. 10/6 40 37 40 43 43
Sun. 10/7 38 37 38 40 41
Mon. 10/8 42 40 42 45 45
Tue. 10/9 51 45 51 58 58
Wed. 10/10 51 44 51 51 51
Thu. 10/11 51 45 51 51 51
Fri. 10/12 51 46 51 51 51
Sat. 10/13 58 49 58 64 58
Sun. 10/14 44 42 44 45 47
Mon. 10/15 45 44 45 49 50
Tue. 10/16 51 44 51 54 51
Wed. 10/17 58 46 58 61 61
Thu. 10/18 58 48 58 64 61
Fri. 10/19 61 51 61 71 74
Sat. 10/20 67 61 67 74 77
Sun. 10/21 64 48 64 71 77
Mon. 10/22 64 51 64 74 71
Tue. 10/23 51 48 51 64 58

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