This website presents weather forecasts and climatological information for current user's present location.
Green Zone
| Index Range | 0 - 50 |
|---|---|
| US-EPA Index | 1 |
| Level of Concern | Good |
Air quality is satisfactory, and air pollution poses little or no risk. |
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Yellow Zone
| Index Range | 51 to 100 |
|---|---|
| US-EPA Index | 2 |
| Level of Concern | Moderate |
Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. |
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Orange Zone
| Index Range | 101 to 150 |
|---|---|
| US-EPA Index | 3 |
| Level of Concern | Unhealthy for Sensitive Groups |
Members of sensitive groups may experience health effects. The general public is less likely to be affected. |
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Red Zone
| Index Range | 151 to 200 |
|---|---|
| US-EPA Index | 4 |
| Level of Concern | Unhealthy |
Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. |
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Purple Zone
| Index Range | 201 to 300 |
|---|---|
| US-EPA Index | 5 |
| Level of Concern | Very Unhealthy |
Health alert: The risk of health effects is increased for everyone. |
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Maroon Zone
| Index Range | 301 and higher |
|---|---|
| US-EPA Index | 6 |
| Level of Concern | Hazardous |
Health warning of emergency conditions: everyone is more likely to be affected. |
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