Your new weather presentation contains many new and worthwhile features, but why did you take out the fronts and the high- and low-pressure centers? Those are valuable items of information for those of us who are planning ahead and need to know the march of the weather systems from west to east.

It's nice to have the isotherms now, but we still want those good old isobars, even though rudimentary.

Given my druthers, I'd take a bar instead of a therm any day.

-- Frank Martineau

Regarding the new weather features: how come you manage to show Ottawa, Canada, on the map each day, but information about Ottawa weather is nowhere to be found in the columns below? Don't you think the newspaper in the capital of the United States should recognize the capital of our neighboring Canada, at least with a four-point line of type each day?

My next of kin live near Ottawa, and for some years I've turned from the front-page headlines to page 2 of the Metro section to see how they were faring. How about restoring the Ottawa information?

-- Alvaine Hamilton

Having been transferred to the Washington area from Tucson, I took quick notice that Tucson has disappeared from your new weather information format. It also appears that the world has shrunken considerably, according to The Post, with the deletion of almost two dozen U.S. cities.

No longer can I reminisce about the past and places I've been. No longer can I relive the pleasures of the unique climate of my present place of residence when I contemplate the cold of Fairbanks, Juneau or Flagstaff. No longer can I admire the fortitude of the inhabitants of Casper, Helena, Topeka or Wichita.

To think that all these years I had been hoping that one day The Post would add my birthplace, Wilkes-Barre/Scranton, to the forecast list.

-- Frank J. Nice

I noticed with regret, that you have eliminated both Syracuse and Providence from your daily weather reports. These are the homes of my children, and the weather in both places is of interest to me. I am a Post reader of long standing, and I hope you will reconsider your decision. -- J. E. Reinstein

I was pleased to see that The Post is using the Air Quality Information Service telephone number of the National Capital Area Lung Associations in the new format of the weather page. Many residents of the metropolitan region rely on this service to receive daily updates of the pollen count and air quality index.

However, many people also rely on the newspaper for this information. It would be helpful to continue to have the air pollution index printed in the newspaper for the readers who are hearing-impaired and unable to benefit from the tape-recorded message.

So far this summer, we have suffered through 14 days in excess of the ozone health standard. Ozone is an eye, nose, throat and respiratory irritant and can cause shortness of breath and coughing in healthy people who exercise. Exposure to ozone can result in more serious health effects in the young, the old and people with lung disease.

The reporting of the air quality index is one means of protecting oneself against the harmful effects of air pollution. -- Mira Courpas The writer is program associate of the Environmental Health Project, National Capital Area Lung Associations.