“Sunday, July 19th, will be a Code Orange Air Quality Action Day for Delaware!”


Kid in gas mask

Kid in gas mask

Sunday and Monday are forecast to be CODE ORANGE bad air days for OZONE.

In addition, Saturday, Sunday, and Monday are forecast to be CODE YELLOW bad air days for fine particles (PM 2.5).

In addition, an excessive heat warning is in effect with forecast heat index values over one hundred for both Sunday and Monday afternoons.

As we have noted many times these “stressors” add up and we would consider the combination of multiple air pollutants, heat, and humidity to add up to CODE RED.  Please take care.

The only good news is that pollen (allergen) levels are not high.

In general, this summer air quality has commonly been at or near CODE YELLOW levels and this can be expected to continue.  There is lots of background info on greendel.org.

The Delaware General Assembly adjourned on July 1st having taken various measures to weaken environmental protections and none, that I know of, to make things better.

To get a sense of how Delaware’s air compares, take a look at http://www.airnow.gov/

The official DNREC forecasts–which, as we’ve often said, UNDERSTATE our situation, are here:  http://www.dnrec.delaware.gov/AQI/Pages/AQIForecast.aspx

Below are the full texts of the DNREC alert email and the heat warning from the National Weather Service.


From: DNREC Ozone Alerts List <dnreclist@state.de.us>
To: DNREC Ozone Alerts List <dnreclist@state.de.us>
Subject: Code Orange Air Quality Action Day – Sunday, July 19th

Sunday, July 19th, will be a Code Orange Air Quality Action Day for Delaware!

Hot, humid, and sunny conditions on Sunday will push ozone to Code Orange levels with the highest concentrations expected in northern New Castle County. Light winds will allow ozone to accumulate. Particulate levels are expected to be in the moderate range. This weather pattern will continue on Monday, which could again be a Code Orange day.

For more information about the air quality alerts and what you can do to reduce air pollution, check out the following website:


A Code Orange air quality forecast for ozone is a level of pollution that can be unhealthy for sensitive groups, such as young children, the elderly, and those with heart and/or respiratory conditions. Such persons should limit outdoor activities, especially those that require a high level of exertion.

Any health related questions should be directed to the Division of Public Health at 302-739-6619. All other questions should be directed to the Division of Air Quality at 302-739-9402.

This message was brought to you by the Division of Air Quality, DNREC……………..​


… Excessive heat warning remains in effect from noon today to
8 PM EDT Monday…

* maximum heat index values… 102 to 107 this afternoon and 100
to 105 on Monday afternoon.

* Temperatures… maximum temperatures in the middle 90s both
today and Monday. There should be little relief tonight with
minimum temperatures only in the middle and upper 70s.

* Impact… the excessive heat and humidity will become a danger
if proper precautions are not taken.

Precautionary/preparedness actions…

Take extra precautions if you work or spend time outside. If
possible, reschedule strenuous activities for the early morning or
late evening. Know the signs and symptoms of heat exhaustion and
heat stroke. Wear light weight and loose fitting clothing and
drink plenty of water.

To reduce risk while working outdoors, the occupational safety
and health administration recommends scheduling frequent rest
breaks in a shaded or air conditioned environment. Anyone overcome
by heat should be moved to a cool and shaded location. Heat stroke
is an emergency, call 9 1 1.

An excessive heat warning means that a period of excessive heat
is expected. The combination of hot temperatures and high humidity
will create a situation in which heat illnesses are possible.
Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun and check on elderly relatives and neighbors.

Children and pets should never be left unattended in a parked
vehicle under any circumstance but most especially during hot
weather. The interior of a vehicle can reach lethal temperatures
in a matter of minutes.

Please do not Forget about your pets. Make sure that they have
adequate water and shelter from the sun.

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