Weather conditions, circumstances and time permitting, mosquito spraying will take place midnight Saturday to 5 a.m. Sunday in Gilbert, Mesa and Tempe.
The area in Gilbert is from Warner to Ray road and from Power to Recker roads.
The first area in Mesa is from Brown Road to University Drive and from Stapley to Mesa drives. The second area is from McKellips to Brown roads and from Stapley Drive to Gilbert Road.
The area in Tempe is from Baseline to Guadalupe roads and from McClintock Drive to Price Freeway/Loop 101.
All areas are being sprayed because local traps found mosquitoes that tested positive for West Nile virus.