Nogales Forecast
AQI Scale
Air Quality ISSUED ON: Thu. Feb 22, 2018
This report is updated Monday through Friday and is valid for areas within and bordering Nogales, Arizona
Today | Thursday 2/22/2018
42
PM2.5
MessageHealth Statement:No health impacts are expected.
Tomorrow | Friday 2/23/2018
47
PM2.5
MessageHealth Statement:No health impacts are expected.
Extended | Saturday 2/24/2018
52
PM2.5
MessageHealth Statement:Unusually sensitive people should consider reducing prolonged outdoor exertion.
Extended | Sunday 2/25/2018
54
PM2.5
MessageHealth Statement:Unusually sensitive people should consider reducing prolonged outdoor exertion.
Extended | Monday 2/26/2018
50
PM2.5
MessageHealth Statement:No health impacts are expected.

Air Pollutant Breakdown
Pollutant Yesterday
2/21/2018
Thursday
2/22/2018
Friday
2/23/2018
Saturday
2/24/2018
Sunday
2/25/2018
Monday
2/26/2018
PM10 27 23 19 25 31 29
PM2.5 43 42 47 52 54 50
PM10 = Particles 10 microns and smaller, PM2.5 = Particles smaller than 2.5 microns

Synopsis & Discussion
Forecaster: -M. Pace
Good air quality across the Nogales area yesterday and that trend will continue through Friday.

A storm system seen on water vapor satellite this morning over the Pacific Northwest will continue moving southeastward today. This storm will move through the Great Basin before diving into Arizona Friday through Saturday morning. Since this storm has an overland trajectory, expecting it to be fairly moisture starved so rain chances will be slim and any rain that does fall will be light. The main concern with this storm will be strong winds. Currently forecasting winds to increase late tomorrow morning through the evening hours with gusts in the 20-25mph range. With the recent rains across the area, these winds should help to keep PM-10 in the Good AQI category.

The storm will quickly move eastward by Saturday afternoon allowing winds to calm through at least Sunday. This will result in stagnation becoming a concern so have raised PM-2.5 into the Moderate AQI category.

For early next week, a broad trough will remain over the Western US allowing several more storms to move through the region increasing breezes from time-to-time allowing PM-10 and PM-2.5 to stay in the Good category. Stay tuned for more details as these storms move closer.

Useful Links
- Subcribe to the Forecast
- Air Nogales Mobile App
- Yesterday's Monitor Data
- Year-to-Date Reports
- Read current issue of "Cracking the AQ Code"


Main Office
1110 W.Washington Street
Phoenix, AZ 85007
P: 602.771.2300
azdeq.gov