Important: This information is published as soon as the values are detected, and does not imply that the data have passed quality assurance validation procedures.
The EPA air quality standard for CO, designed to protect public health with an adequate margin of safety, is 9 parts per million (ppm), averaged over 8 hours. For concentrations greater than 9 ppm, the air is considered to be unhealthful.
| Metro Areas | Related Info | ||
| Today's Readings (ppmv, 8 hour moving average) at the Roswell Station |
||||||
|---|---|---|---|---|---|---|
| Hours 1-8 |
Hours 9-16 |
Hours 17-24 |
 |
|||
| 01 | .4 | 09 | .3 | 17 | .5 | |
| 02 | .4 | 10 | .4 | 18 | ||
| 03 | .4 | 11 | .4 | 19 | ||
| 04 | .3 | 12 | .4 | 20 | ||
| 05 | .3 | 13 | .4 | 21 | ||
| 06 | .3 | 14 | .4 | 22 | ||
| 07 | .3 | 15 | .5 | 23 | ||
| 08 | .3 | 16 | .5 | 24 | ||
| Today's Readings (ppmv, 8 hour moving average) at the South Dekalb Station |
||||||
|---|---|---|---|---|---|---|
| Hours 1-8 |
Hours 9-16 |
Hours 17-24 |
 |
|||
| 01 | .2 | 09 | N/A | 17 | .1 | |
| 02 | N/A | 10 | N/A | 18 | ||
| 03 | N/A | 11 | .2 | 19 | ||
| 04 | N/A | 12 | .2 | 20 | ||
| 05 | N/A | 13 | .2 | 21 | ||
| 06 | N/A | 14 | .2 | 22 | ||
| 07 | N/A | 15 | .2 | 23 | ||
| 08 | N/A | 16 | .1 | 24 | ||
| Today's Readings (ppmv, 8 hour moving average) at the Yorkville Station |
||||||
|---|---|---|---|---|---|---|
| Hours 1-8 |
Hours 9-16 |
Hours 17-24 |
 |
|||
| 01 | .7 | 09 | .7 | 17 | .7 | |
| 02 | .7 | 10 | .7 | 18 | ||
| 03 | .7 | 11 | .7 | 19 | ||
| 04 | .7 | 12 | .7 | 20 | ||
| 05 | .7 | 13 | .7 | 21 | ||
| 06 | .7 | 14 | .7 | 22 | ||
| 07 | .7 | 15 | .7 | 23 | ||
| 08 | .7 | 16 | .7 | 24 | ||