Phoenix Forecast
AQI Scale
Air Quality ISSUED ON: Fri. Feb 23, 2018
This report is updated Monday through Friday and is valid for areas within and bordering Phoenix, Arizona
Today | Friday 2/23/2018
56
PM10
MessageHealth Statement:Unusually sensitive people should consider reducing prolonged outdoor exertion.
Notice:Afternoon Haze and Isolated Blowing Dust Possible
Tomorrow | Saturday 2/24/2018
46
Ozone
MessageHealth Statement:No health impacts are expected.
Extended | Sunday 2/25/2018
44
Ozone
MessageHealth Statement:No health impacts are expected.
Extended | Monday 2/26/2018
46
PM10
MessageHealth Statement:No health impacts are expected.
Extended | Tuesday 2/27/2018
45
Ozone
MessageHealth Statement:No health impacts are expected.

Air Pollutant Breakdown
Pollutant Yesterday
2/22/2018
Friday
2/23/2018
Saturday
2/24/2018
Sunday
2/25/2018
Monday
2/26/2018
Tuesday
2/27/2018
O3 48 47 46 44 44 45
CO 10 8 15 15 11 13
PM10 37 56 40 42 46 43
PM2.5 31 43 37 40 42 38
O3 = Ozone, CO = Carbon Monoxide, PM10 = Particles 10 microns and smaller, PM2.5 = Particles smaller than 2.5 microns

Synopsis & Discussion
Forecaster: -R. Nicoll
There is currently a low pressure system pushing into the region. There are some light rain/snow showers over the northern part of the state. However, there isn't a lot of moisture with this system and we don't anticipate rain here in the Valley. What we do expect though are winds. Beginning this afternoon, we forecast breezes up around 15 mph with gusts around 20 mph. This may be enough to kick up a little dust and cause some haze this afternoon. With typical morning particulates this morning along with a little dust this afternoon, we forecast PM10 to reach Moderate AQI levels today. Lighter winds returning tomorrow should allow PM10 to drop back into the Good range. Without extended stagnation nor excessive winds through the rest of the forecast period, we expect PM10 to stay in the Good range after today. PM2.5, Ozone, and Carbon Monoxide are forecast to be in the Good AQI range through the entire period.

Useful Links
- Subcribe to the Forecast
- Yesterday's Monitor Data
- Year-to-Date Reports
- Maricopa County Air Monitoring Site
- Read current issue of "Cracking the AQ Code"


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