Monthly Report
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Air Quality Monitoring

Monthly Readings
Air Resource Management
Data on this page are updated daily when complete data are received.

It is important to note that the ozone monitoring data less than three months old viewed on this website have generally not been verified and checked for quality assurance in accordance with federal requirements.

 More Details about: Sydney
 Ad Hoc Reporting

AQS # L057-3002
Sydney
Hillsborough County

Readings for May 2025

CO Data


CO data below are shown in Parts Per Million (PPM)
Date
1 Hr Avg.
8 Hr Avg.
Date
1 Hr Avg.
8 Hr Avg.
MAY-1 0.225 0.18 MAY-17
*
*
MAY-2 0.264 0.18 MAY-18
*
*
MAY-3 0.176 0.15 MAY-19
*
*
MAY-4 0.183 0.17 MAY-20
*
*
MAY-5 0.187 0.17 MAY-21
*
*
MAY-6
*
*
 MAY-22
*
*
MAY-7 0.148
*
 MAY-23
*
*
MAY-8 0.165 0.18 MAY-24
*
*
MAY-9 0.239 0.19 MAY-25
*
*
MAY-10 0.197 0.15 MAY-26
*
*
MAY-11 0.138 0.1 MAY-27
*
*
MAY-12 0.16 0.16 MAY-28
*
*
MAY-13
*
*
 MAY-29
*
*
MAY-14
*
*
 MAY-30
*
*
MAY-15
*
*
 MAY-31
*
*
MAY-16
*
*
* = Value Not Available
Federal Air Quality Standard
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This site did not monitor NO2 during May, 2025.

SO2 Data


SO2 data below are shown in Parts Per Billion (PPB)
Date
1 Hr Avg.
8 Hr Avg.
Date
1 Hr Avg.
8 Hr Avg.
MAY-1 2.096 .78 MAY-17
*
*
MAY-2 4.065 1.11 MAY-18
*
*
MAY-3 3.139 .84 MAY-19
*
*
MAY-4 0.966 .6 MAY-20
*
*
MAY-5 1.092 .55 MAY-21
*
*
MAY-6
*
*
 MAY-22
*
*
MAY-7 0.792
*
 MAY-23
*
*
MAY-8 0.97 .56 MAY-24
*
*
MAY-9 1.51 .65 MAY-25
*
*
MAY-10 0.524 .44 MAY-26
*
*
MAY-11 0.589 .42 MAY-27
*
*
MAY-12 0.628 .42 MAY-28
*
*
MAY-13
*
*
 MAY-29
*
*
MAY-14
*
*
 MAY-30
*
*
MAY-15
*
*
 MAY-31
*
*
MAY-16
*
*
* = Value Not Available
Federal Air Quality Standard
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Ozone Data


Ozone data below are shown in Parts Per Billion (PPB)
Date
1 Hr Avg.
8 Hr Avg.
Date
1 Hr Avg.
8 Hr Avg.
MAY-1 58 54 MAY-17
*
*
MAY-2 56 53 MAY-18
*
*
MAY-3 53 49 MAY-19
*
*
MAY-4 48 44 MAY-20
*
*
MAY-5 52 45 MAY-21
*
*
MAY-6 59 53 MAY-22
*
*
MAY-7 51 41 MAY-23
*
*
MAY-8 51 43 MAY-24
*
*
MAY-9 55 42 MAY-25
*
*
MAY-10 37 34 MAY-26
*
*
MAY-11 34 27 MAY-27
*
*
MAY-12 42 35 MAY-28
*
*
MAY-13
*
*
 MAY-29
*
*
MAY-14
*
*
 MAY-30
*
*
MAY-15
*
*
 MAY-31
*
*
MAY-16
*
*
* = Value Not Available
Federal Air Quality Standard
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PM 2.5 Data


PM 2.5 data below are shown in Micrograms Per Cubic Meter (μg/m3)
Date
Daily Avg.
Date
Daily Avg.
MAY-1 12.3 MAY-17
*
MAY-2 9.5 MAY-18
*
MAY-3 7.4 MAY-19
*
MAY-4 7.3 MAY-20
*
MAY-5 8.9 MAY-21
*
MAY-6 7.8 MAY-22
*
MAY-7 5.9 MAY-23
*
MAY-8 8 MAY-24
*
MAY-9 8.5 MAY-25
*
MAY-10 8.3 MAY-26
*
MAY-11 5.6 MAY-27
*
MAY-12 3.4 MAY-28
*
MAY-13
*
 MAY-29
*
MAY-14
*
 MAY-30
*
MAY-15
*
 MAY-31
*
MAY-16
*
* = Value Not Available
Federal Air Quality Standard
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PM 10 Data


PM 10 data below are shown in Micrograms Per Cubic Meter (μg/m3)
Date
Daily Avg.
Date
Daily Avg.
MAY-1 29.2 MAY-17
*
MAY-2 24.1 MAY-18
*
MAY-3 18.7 MAY-19
*
MAY-4 15.4 MAY-20
*
MAY-5 16.8 MAY-21
*
MAY-6 18.7 MAY-22
*
MAY-7 15.7 MAY-23
*
MAY-8 18.7 MAY-24
*
MAY-9 18.9 MAY-25
*
MAY-10 16.6 MAY-26
*
MAY-11 13.9 MAY-27
*
MAY-12 8 MAY-28
*
MAY-13
*
 MAY-29
*
MAY-14
*
 MAY-30
*
MAY-15
*
 MAY-31
*
MAY-16
*
* = Value Not Available
Federal Air Quality Standard
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