Milwaukee, Ozaukee Counties under ozone alert Friday evening
From the WI DNR:
Advisory for Ozone (Orange)
| Start Time: | 5:00PM CT Friday, September 20, 2019 |
| End Time: | 9:00PM CT Friday, September 20, 2019 |
| Counties: | Milwaukee, Ozaukee |
AIR QUALITY INDEX CHART
| Air Quality Index (AQI) Values | Levels of Health Concern | Colors |
| When the AQI is in this range: | ...air quality conditions are: | ...as symbolized by this color: |
| 0 to 50 | Good | Green |
| 51 to 100 | Moderate | Yellow |
| 101 to 150 | Unhealthy for Sensitive Groups | Orange |
| 151 to 200 | Unhealthy | Red |
| 201 to 300 | Very Unhealthy | Purple |
| 301 to 500 | Hazardous | Maroon |
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