Get your Two City Asthma Comparison Chart by typing in your two zipcodes below. Your 4-day allergy forecast is available by entering in the zip code box in the upper right. Click the Compare Now button to see the Asthma forecast in 2 areas! Enter Zipcode 1:        Enter Zipcode 2:    Low: Asthma levels between 0 and 2.4 tend to affect very few individuals among the allergy-sufferging public. Low-Medium: Asthma levels between 2.5 and 4.8 tend to start affecting individuals extremely sensitive to the predominant pollen. Medium: Asthma levels between 4.9 and 7.2 will likely cause symptoms for many individuals who suffer from allergies to predominant pollen types of the season. Med-High: Asthma levels between 7.3 and 9.6 tend to affect a large number of individuals who suffer from the pollen types of the season. High: Asthma levels between 9.7 and 12.0 tend to affect most individuals who suffer from the pollen types of the season. Symptoms such as hay fever may become more severe during days with high pollen levels.