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: Sat Aug 30 2014 06:00:00 PM 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 64 PARTICULATE MATTER(2.5) 18.1 µg/m3
YELLOW
MODERATE 8/30/14
2:00 AM
34 OZONE 40 ppb
GREEN
GOOD 8/30/14
5:00 PM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 8/30/14
5:00 PM
CHARLOTTE - GASTONIA - CONCORD - SALISBURY 62 PARTICULATE MATTER(2.5) 17.2 µg/m3
YELLOW
MODERATE 8/30/14
1:00 AM
35 OZONE 41 ppb
GREEN
GOOD 8/29/14
6:00 PM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 8/30/14
1:00 AM
FAYETTEVILLE 51 PARTICULATE MATTER(2.5) 12.2 µg/m3
YELLOW
MODERATE 8/30/14
7:00 AM
GREENVILLE 49 PARTICULATE MATTER(2.5) 11.7 µg/m3
GREEN
GOOD 8/30/14
1:00 AM
38 OZONE 45 ppb
GREEN
GOOD 8/29/14
6:00 PM
HICKORY - MORGANTON - LENOIR 60 PARTICULATE MATTER(2.5) 16.3 µg/m3
YELLOW
MODERATE 8/30/14
1:00 AM
RALEIGH - DURHAM - CHAPEL HILL 51 PARTICULATE MATTER(2.5) 12.3 µg/m3
YELLOW
MODERATE 8/30/14
2:00 AM
36 OZONE 42 ppb
GREEN
GOOD 8/29/14
6:00 PM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 8/29/14
9:00 PM
ROCKY MOUNT 50 PARTICULATE MATTER(2.5) 11.9 µg/m3
GREEN
GOOD 8/30/14
11:00 AM
36 OZONE 43 ppb
GREEN
GOOD 8/29/14
6:00 PM
WILMINGTON 43 PARTICULATE MATTER(2.5) 10.3 µg/m3
GREEN
GOOD 8/30/14
1:00 AM
21 OZONE 25 ppb
GREEN
GOOD 8/30/14
5:00 PM
1 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 8/30/14
6:00 AM
WINSTON-SALEM - GREENSBORO - HIGH POINT 59 PARTICULATE MATTER(2.5) 16.1 µg/m3
YELLOW
MODERATE 8/30/14
12:00 PM
35 OZONE 41 ppb
GREEN
GOOD 8/29/14
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