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 30 2014 01:00:00 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 32 PARTICULATE MATTER(2.5) 7.6 µg/m3
GREEN
GOOD 9/30/14
11:00 AM
7 OZONE 8 ppb
GREEN
GOOD 9/29/14
1:00 PM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 9/29/14
1:00 PM
CHARLOTTE - GASTONIA - CONCORD - SALISBURY 35 PARTICULATE MATTER(2.5) 8.3 µg/m3
GREEN
GOOD 9/30/14
10:00 AM
3 OZONE 4 ppb
GREEN
GOOD 9/30/14
11:00 AM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 9/30/14
1:00 AM
FAYETTEVILLE 33 PARTICULATE MATTER(2.5) 8.0 µg/m3
GREEN
GOOD 9/30/14
9:00 AM
GREENVILLE 36 PARTICULATE MATTER(2.5) 8.6 µg/m3
GREEN
GOOD 9/30/14
1:00 AM
15 OZONE 18 ppb
GREEN
GOOD 9/29/14
1:00 PM
RALEIGH - DURHAM - CHAPEL HILL 43 PARTICULATE MATTER(2.5) 10.2 µg/m3
GREEN
GOOD 9/30/14
1:00 AM
14 OZONE 16 ppb
GREEN
GOOD 9/30/14
11:00 AM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 9/30/14
3:00 AM
ROCKY MOUNT 26 PARTICULATE MATTER(2.5) 6.3 µg/m3
GREEN
GOOD 9/30/14
11:00 AM
7 OZONE 8 ppb
GREEN
GOOD 9/30/14
1:00 AM
WILMINGTON 34 PARTICULATE MATTER(2.5) 8.1 µg/m3
GREEN
GOOD 9/29/14
3:00 PM
15 OZONE 18 ppb
GREEN
GOOD 9/29/14
1:00 PM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 9/30/14
9:00 AM
WINSTON-SALEM - GREENSBORO - HIGH POINT 54 PARTICULATE MATTER(2.5) 13.3 µg/m3
YELLOW
MODERATE 9/30/14
2:00 AM
13 OZONE 15 ppb
GREEN
GOOD 9/30/14
11:00 AM
 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