Air Monitoring >> Latest Available Air Quality Index Readings
Latest Available Air Quality Index Readings
This table shows the current maximum Air Quality Index (AQI) readings representing the indicated Metropolitan Statistical Areas over the past 24 hours and may include data from yesterday. The supporting data have not been fully validated (more information).

The accompanying map highlights counties in which AQI pollutant monitors are located. The populations represented by these monitors may include other whole or partial surrounding counties.

Note: Air Quality standards for each pollutant are subject to revision by the Federal EPA about once every five years. Current data ranges and health advisory information are shown here.

This page was last updated on: Tue Sep 02 2014 12:00:00 AM EDT

Entries highlighted in boldface type represent the "critical pollutant" information.

Area AQI Responsible Pollutant Pollutant Concentration Color Code Air Quality Time of Maximum
ASHEVILLE 63 PARTICULATE MATTER(2.5) 17.6 µg/m3
YELLOW
MODERATE 9/1/14
10:00 PM
15 OZONE 18 ppb
GREEN
GOOD 9/1/14
6:00 PM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 9/1/14
6:00 PM
CHARLOTTE - GASTONIA - CONCORD - SALISBURY 54 PARTICULATE MATTER(2.5) 13.4 µg/m3
YELLOW
MODERATE 9/1/14
9:00 PM
31 OZONE 37 ppb
GREEN
GOOD 9/1/14
6:00 PM
1 SULFUR DIOXIDE 1 ppb
GREEN
GOOD 9/1/14
11:00 PM
FAYETTEVILLE 56 PARTICULATE MATTER(2.5) 14.3 µg/m3
YELLOW
MODERATE 9/1/14
10:00 PM
GREENVILLE 25 OZONE 30 ppb
GREEN
GOOD 9/1/14
5:00 PM
25 PARTICULATE MATTER(2.5) 5.9 µg/m3
GREEN
GOOD 9/1/14
3:00 AM
HICKORY - MORGANTON - LENOIR 54 PARTICULATE MATTER(2.5) 13.3 µg/m3
YELLOW
MODERATE 9/1/14
8:00 PM
RALEIGH - DURHAM - CHAPEL HILL 57 PARTICULATE MATTER(2.5) 14.9 µg/m3
YELLOW
MODERATE 9/1/14
10:00 PM
27 OZONE 32 ppb
GREEN
GOOD 9/1/14
5:00 PM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 9/1/14
12:00 AM
ROCKY MOUNT 54 PARTICULATE MATTER(2.5) 13.3 µg/m3
YELLOW
MODERATE 9/1/14
8:00 PM
25 OZONE 29 ppb
GREEN
GOOD 9/1/14
5:00 PM
WILMINGTON 26 OZONE 31 ppb
GREEN
GOOD 9/1/14
4:00 PM
22 PARTICULATE MATTER(2.5) 5.3 µg/m3
GREEN
GOOD 9/1/14
8:00 PM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 9/1/14
5:00 PM
WINSTON-SALEM - GREENSBORO - HIGH POINT 62 PARTICULATE MATTER(2.5) 17.1 µg/m3
YELLOW
MODERATE 9/1/14
8:00 PM
26 OZONE 31 ppb
GREEN
GOOD 9/1/14
6:00 PM
 North Carolina Air Quality Index Areas

General Information About AQI National AQI Overview (EPA AIRNOW)
Frequently Asked Questions National Ambient Air Quality Standards (NAAQS)
Current Data from Other Areas in NC NC Air Awareness Program