Allergies & Pollen
Pollen Forecast for Londonderry, New Hampshire
1.5
Low
Ragweed
Today
Concentration of pollen grains in the air for Friday will be on the increase but will stay in the very low range. The cause for the rising pollen levels is strong winds and decreasing humidity.
Outlook
Based on past pollen counts and expected weather conditions, pollen levels for Saturday will be falling and will remain in the extremely low range. This change results in part from falling temperatures.