AQ Exceedance

Updated On: 5/28/2023 - 9:45 AM
This report displays the number of days a monitor exceeded the federal health standard for the given year. Click the monitor to view the dates of each exceedance and the associated concentration. All data are preliminary.
Previous Day

  2023  


Maricopa County
Monitor
Ozone
PM10
PM2.5
CO
SO2
NO2
Date
ppb
5/11
72
5/12
73
5/17
81
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
4/3
181
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/12
72
5/17
73
5/22
71
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/16
72
5/17
78
5/20
72
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
1/8
37
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/14
73
5/15
74
5/16
76
5/17
74
5/21
74
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/11
72
5/12
72
5/17
86
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/14
74
5/15
74
5/16
78
5/17
81
5/20
74
5/21
76
Date
µg/m3
-
Date
µg/m3
1/1
66.9
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/17
78
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
4/11
71
4/16
73
5/11
76
5/12
76
5/14
72
5/16
75
5/17
90
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
4/16
72
5/12
71
5/16
72
5/17
82
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/17
72
Date
µg/m3
-
Date
µg/m3
1/1
55.3
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/14
72
5/15
71
5/16
78
5/17
81
5/20
78
5/21
73
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/9
71
5/11
72
5/12
73
5/16
71
5/17
76
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/8
71
5/11
73
5/12
74
5/16
71
5/17
84
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/17
74
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
4/16
72
5/17
76
Date
µg/m3
-
Date
µg/m3
1/1
37.6
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
4/3
199
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/17
71
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/16
72
5/17
77
5/20
75
Date
µg/m3
-
Date
µg/m3
1/1
68.4
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-

Pima County
Monitor
Ozone
PM10
PM2.5
CO
SO2
NO2
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
3/19
248
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-

Pinal County
Monitor
Ozone
PM10
PM2.5
CO
SO2
NO2
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/17
79
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/16
73
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
5/14
210
5/15
226
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/16
71
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/11
71
5/17
77
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
5/1
192
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-

Coconino
Monitor
Ozone
PM10
PM2.5
CO
SO2
NO2
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-

Cochise County
Monitor
Ozone
PM10
PM2.5
CO
SO2
NO2
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
5/26
155
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-

Gila County
Monitor
Ozone
PM10
PM2.5
CO
SO2
NO2
Date
ppb
-
Date
µg/m3
2/14
243
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-
Date
ppb
5/11
72
5/12
73
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-

La Paz County
Monitor
Ozone
PM10
PM2.5
CO
SO2
NO2
Date
ppb
5/9
71
5/15
78
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-

Mohave County
Monitor
Ozone
PM10
PM2.5
CO
SO2
NO2
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-

Navajo County
Monitor
Ozone
PM10
PM2.5
CO
SO2
NO2
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-

Santa Cruz County
Monitor
Ozone
PM10
PM2.5
CO
SO2
NO2
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-

Yavapai County
Monitor
Ozone
PM10
PM2.5
CO
SO2
NO2
Date
ppb
-
Date
µg/m3
-
Date
µg/m3
-
Date
ppm
-
Date
ppb
-
Date
ppb
-

Yuma County
Monitor
Ozone
PM10
PM2.5
CO
SO2
NO2
Date
ppb
-
Date
µg/m3
2/22
315
4/3
228
Date
µg/m3
2/22
36.2
Date
ppm
-
Date
ppb
-
Date
ppb
-