| Air Quality |
Weather Conditions |
Recommended Actions |
Unhealthy
|
- Hot (Mid 90's to 100's), hazy and humid
- Stagnant air, little or no wind
- Little chance of rain
- Stationary high pressure system with sunny skies
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When air quality reaches unhealthful levels:
- Children and elderly individuals should reduce outdoor activities
- Healthy individuals should limit strenuous outdoor work or exercise
When air quality is forecast to reach unhealthful levels, residents are strongly urged to:
- Limit driving and, when possible, combined errands
- Use area bus and rail lines, or share a ride to work
- Avoid mowing lawn with gasoline-powered mowers
- Refuel cars after dusk
|
Unhealthfy for Sensitive Groups
|
- Temperature is in the upper 80's to low 90's
- Light winds
- Slow-moving high pressure system with sunny skies
|
When air quality approaches unhealthful levels, residents are urged to:
- Refuel cars after dusk to limit daytime pollution
- Avoid mowing lawns with gasoline-powered mowers
- Share a ride or drive only their newest, best maintained vehicle.
|
Moderate
|
- Mid summer temperatures (upper 70's to mid 80's)
- Light to moderate winds (15 knots or less)
- High pressure system with partly or sunny skies
|
When air quality is in moderate range, residents should:
- Consolidate trips and errands
- Limit idling when possible
- Conserve electricity and set air conditioners to 78° F
|
Good
|
- Cool summer temperatures (mid 70's to low 80's)
- Windy conditions (15-20 knots or higher)
- Heavy or steady rain
- Passing cold front carries pollution out of area
|
Throughout the ozone smog season (May through September), residents should make an extra effort to:
- Carpool, use transit, bike or walk when possible
- Keep cars and boats tunned-up
- Use environmentally paints and cleaning products
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