Mosquito forecast
Mosquito forecastCheck the mosquito forecast like you check the weather
A daily Bite Index per city: how bad tonight will be, why, and the week ahead.A daily Bite Index for each city we cover: how bad tonight will be, why, and the week ahead. Built from the rain that is still hatching and the temperatures that decide how fast it does.
Austin, TX
Only 0.5 in. of rain Oct 22–Oct 30, so few new breeding sites; what's biting is coming from irrigation, pools and creeks.
Houston, TX
Only 0.2 in. of rain Oct 22–Oct 31, so few new breeding sites; what's biting is coming from irrigation, pools and creeks.
San Antonio, TX
2.5 in. of rain Oct 22–Oct 31 has had time to hatch: this is the surge from that storm.
Dallas, TX
Only 0.1 in. of rain Oct 19–Oct 30, so few new breeding sites; what's biting is coming from irrigation, pools and creeks.
Fort Worth, TX
Only 0.2 in. of rain Oct 19–Oct 30, so few new breeding sites; what's biting is coming from irrigation, pools and creeks.
Corpus Christi, TX
Only 0.2 in. of rain Oct 24–Nov 1, so few new breeding sites; what's biting is coming from irrigation, pools and creeks.
New Orleans, LA
Only 4 mosquito complaints to New Orleans 311 in the last 7 days, well under the recent average of 6.4: fewer new breeding sites than usual.
Baton Rouge, LA
Only 546 mosquito service requests to EBR Mosquito Abatement in the last 7 days, well under the recent average of 748: fewer new breeding sites than usual.
Miami, FL
10.8 in. of rain Oct 25–Nov 1 has had time to hatch: this is the surge from that storm.
Tampa, FL
2.3 in. of rain Oct 24–Oct 31 has had time to hatch: this is the surge from that storm.
Orlando, FL
3.8 in. of rain Oct 24–Oct 31 has had time to hatch: this is the surge from that storm.
Jacksonville, FL
1.3 in. of rain Oct 23–Oct 31 is now producing adults (cool weather slowed the hatch, so the window is longer than usual).
Atlanta, GA
Tonight: a cool 56°F evening, light wind — poor flying weather, so fewer bites than the population alone would suggest.
Phoenix, AZ
1.2 in. of rain Oct 22–Oct 30 is now producing adults (cool weather slowed the hatch, so the window is longer than usual).
Memphis, TN
Tonight: a cool 49°F evening, light wind — poor flying weather, so fewer bites than the population alone would suggest.
Nashville, TN
Tonight: a cool 48°F evening, light wind — poor flying weather, so fewer bites than the population alone would suggest.
Oklahoma City, OK
2.0 in. of rain Oct 16–Oct 29 has had time to hatch: this is the surge from that storm.
Birmingham, AL
Tonight: a cool 50°F evening, light wind — poor flying weather, so fewer bites than the population alone would suggest.
Charlotte, NC
Tonight: a cool 54°F evening, light wind — poor flying weather, so fewer bites than the population alone would suggest.
Richmond, VA
0.9 in. of rain Oct 14–Oct 28 is now producing adults (cool weather slowed the hatch, so the window is longer than usual).
Washington, DC
Off-season: even with rain and warmth, populations are a fraction of summer's.
St. Louis, MO
Tonight: a cool 52°F evening, light wind — poor flying weather, so fewer bites than the population alone would suggest.
Chicago, IL
Off-season: even with rain and warmth, populations are a fraction of summer's.
Minneapolis, MN
The week has averaged 48°F, below the 50°F where mosquitoes stop flying and breeding. Nothing to forecast until it warms up.
Norfolk, VA
1.0 in. of rain Oct 16–Oct 29 is now producing adults (cool weather slowed the hatch, so the window is longer than usual).
Savannah, GA
Only 0.0 in. of rain Oct 21–Oct 30, so few new breeding sites; what's biting is coming from irrigation, pools and creeks.
Charleston, SC
Only 0.0 in. of rain Oct 21–Oct 30, so few new breeding sites; what's biting is coming from irrigation, pools and creeks.
Louisville, KY
Off-season: even with rain and warmth, populations are a fraction of summer's.
Indianapolis, IN
Off-season: even with rain and warmth, populations are a fraction of summer's.
Philadelphia, PA
1.1 in. of rain Oct 14–Oct 28 is now producing adults (cool weather slowed the hatch, so the window is longer than usual).
Baltimore, MD
Off-season: even with rain and warmth, populations are a fraction of summer's.
New York, NY
Off-season: even with rain and warmth, populations are a fraction of summer's.
More cities are coming.
We're starting with Central Texas and adding metros as we wire in each one's local mosquito surveillance. Until then, the season map covers every county.
What the numbers mean
Low
Few mosquitoes. You may see one or two at dusk near water.
Moderate
Some bites at dusk and dawn, mostly near creeks, gardens and shade.
High
Bites within a few minutes outdoors at dusk. Repellent or long sleeves pay off.
Very High
Steady biting from late afternoon on, anywhere with shade or standing water.
Severe
Swarming conditions. Expect bites within a minute or two outside at dusk.
The Bite Index is our own model of conditions, not a mosquito count. It combines rain 7–14 days ago (the egg-to-adult lag), the fortnight's temperatures, and tonight's dusk weather, scaled by the season. Every city page lists today's value for each factor so the number can be checked, and links the local health department's trap and West Nile data, which this index does not replace.