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: Wed Sep 17 2014 04:00:00 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) 7.7 µg/m3
GREEN
GOOD 9/17/14
2:00 PM
23 OZONE 27 ppb
GREEN
GOOD 9/16/14
4:00 PM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 9/16/14
4:00 PM
CHARLOTTE - GASTONIA - CONCORD - SALISBURY 44 PARTICULATE MATTER(2.5) 10.5 µg/m3
GREEN
GOOD 9/17/14
1:00 PM
25 OZONE 30 ppb
GREEN
GOOD 9/17/14
1:00 AM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 9/17/14
1:00 AM
FAYETTEVILLE 49 PARTICULATE MATTER(2.5) 11.7 µg/m3
GREEN
GOOD 9/17/14
1:00 PM
GREENVILLE 43 OZONE 51 ppb
GREEN
GOOD 9/16/14
4:00 PM
41 PARTICULATE MATTER(2.5) 9.9 µg/m3
GREEN
GOOD 9/16/14
8:00 PM
HICKORY - MORGANTON - LENOIR 42 PARTICULATE MATTER(2.5) 10.1 µg/m3
GREEN
GOOD 9/17/14
2:00 PM
RALEIGH - DURHAM - CHAPEL HILL 55 PARTICULATE MATTER(2.5) 13.8 µg/m3
YELLOW
MODERATE 9/17/14
2:00 PM
39 OZONE 46 ppb
GREEN
GOOD 9/16/14
4:00 PM
1 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 9/17/14
9:00 AM
ROCKY MOUNT 48 PARTICULATE MATTER(2.5) 11.6 µg/m3
GREEN
GOOD 9/17/14
2:00 PM
37 OZONE 44 ppb
GREEN
GOOD 9/17/14
3:00 PM
WILMINGTON 25 OZONE 29 ppb
GREEN
GOOD 9/16/14
4:00 PM
13 PARTICULATE MATTER(2.5) 3.1 µg/m3
GREEN
GOOD 9/17/14
2:00 AM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 9/17/14
1:00 AM
WINSTON-SALEM - GREENSBORO - HIGH POINT 50 PARTICULATE MATTER(2.5) 11.9 µg/m3
GREEN
GOOD 9/17/14
2:00 PM
34 OZONE 40 ppb
GREEN
GOOD 9/16/14
4:00 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