AirNow-Tech is a password-protected website for air quality data management analysis, and decision support. AirNow-Tech is primarily used by the federal, State, Tribal, and local air quality organizations that provide data and forecasts to the AirNow system, as well as researchers and other air data users. It allows users to:

  • Access monitoring site data, information, and polling status
  • Analyze current and past air quality events and episodes
  • Submit and analyze air quality forecasts
  • Configure EnviroFlash email services for public dissemination of air quality forecasts
  • View meteorological and air quality data
  • Generate data reports
  • Create GIS-based maps with air quality and meteorological conditions
  • Sign up for the AirNow Notifier listserve
Register for an AirNow-Tech Account

A comprehensive list of EPA air pollution data sources

Register with AirNow API for an automatic feed of AirNow air quality data

No news events currently available.

Color Legend
Green Current Yellow 2 to 6 hrs old
Red over 6 hrs old Gray Unknown status

November 17, 2017 21:23 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 11/17 19:00 11/17 19:00 02/25 09:00
AIR      
AK1 11/17 20:00 11/17 20:00 11/17 20:00
AL1 11/17 19:00 11/17 19:00 10/28 13:00
AL2 11/17 20:00 11/17 20:00 11/17 20:00
AL3      
AL4 11/17 19:00 11/17 19:00  
AR1 11/17 20:00 11/17 20:00  
AZ1 11/17 19:00 11/17 20:00 11/17 20:00
AZ2 11/17 20:00 11/17 20:00 11/17 20:00
AZ3 11/17 20:00 11/17 20:00 11/17 20:00
AZ4 11/17 20:00 07/10 15:42 11/17 20:00
BC1 11/17 20:00 11/17 20:00 11/17 20:00
BC2 11/17 20:00 11/17 20:00 11/17 20:00
BLW 11/17 20:00 03/17 13:00  
CA0 11/17 20:00 10/04 11:00 11/17 20:00
CA1 11/17 20:00 11/17 20:00 08/27 03:00
CA3 11/17 20:00 11/17 20:00 11/17 20:00
CA4 11/17 20:00 11/17 20:00  
CA5 11/17 20:00 11/17 20:00 11/17 20:00
CA6 11/17 19:00 11/17 19:00 11/17 19:00
CA7 11/17 20:00 11/17 20:00 11/17 20:00
CA8 11/17 20:00 11/17 21:00 11/17 20:00
CA9 11/17 20:00 11/17 20:00 11/17 20:00
CAT 11/17 11:00 06/06 14:00  
CHO 11/17 20:00    
CK1 11/17 20:00 11/17 20:00 11/17 20:00
CMB   11/17 20:00  
CN1 11/17 19:00 11/17 19:00  
CN2 11/17 20:00    
CN3 11/17 19:00 11/17 19:00 11/17 19:00
CN4 11/17 19:00 11/17 19:00  
CO1 11/17 20:00 11/17 20:00 11/17 20:00
CO4      
CT1 11/17 21:21 11/17 21:21 11/17 20:00
DC1 11/17 20:00 11/17 21:22 11/17 20:00
DE1 11/17 20:00 11/17 20:00  
DN1      
EP1      
EPA   08/21 12:00  
FL2 11/17 20:00 11/17 20:00  
FL3 11/17 19:00 11/17 19:00 11/17 19:00
FL4 11/17 20:00 11/17 20:00 11/17 20:00
FS1   11/17 21:00 08/05 04:00
GBU 11/17 20:00 11/17 21:00 11/17 20:00
GOL      
HC1   11/17 20:00  
HI1 11/17 20:00 11/17 20:00 11/17 20:00
IA1 11/17 20:00 11/17 20:00 11/17 20:00
IA2 11/17 20:00 11/17 19:00  
IA3 11/01 08:00 11/17 20:00  
ID1 11/17 20:00 11/17 21:00 11/17 20:00
IEG 11/17 20:00 11/17 20:00 11/17 20:00
IL1 11/17 20:00 11/17 20:00  
IN4 11/17 20:00 11/17 20:00 11/17 20:00
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KM1 11/17 20:00 11/17 20:00  
KS1 11/17 20:00 11/17 20:00 11/17 20:00
KY1 11/17 20:00 11/17 20:00  
LA1 11/17 20:00 11/17 20:00 11/17 20:00
LC1      
MA1 11/17 15:00 11/17 15:00  
MD1 11/17 20:00 11/17 20:00  
ME1 11/17 19:00 11/17 19:00 11/17 19:00
MEN 11/17 20:00 11/17 20:00 11/17 20:00
MI1 11/17 20:00 11/17 20:00 11/17 20:00
MM1 11/17 20:00 11/17 20:00  
MO1 11/17 20:00 11/17 20:00 11/17 20:00
MOE      
MON 11/17 19:00 11/17 20:00 11/17 19:00
MS1 11/17 20:00 11/17 20:00  
MT1 11/17 20:00 11/17 20:00 11/17 20:00
NC1 11/17 20:00 11/17 20:00 11/17 20:00
NC2 11/17 20:00 11/17 20:00  
NC3 11/17 20:00 11/17 20:00 07/31 23:00
NCA 11/17 20:00 11/17 14:00 09/28 13:00
NE1 11/17 10:00 11/17 20:00 11/17 20:00
NE2 11/17 20:00 11/17 20:00 11/17 20:00
NH1 11/17 20:00 11/17 20:00 11/17 20:00
NJ1 11/17 20:00 11/17 20:00  
NL1 11/17 19:00 11/17 19:00  
NM1 11/17 20:00 11/17 20:00 11/17 20:00
NM2 11/17 20:00 11/17 20:00 11/17 20:00
NOS 11/17 19:00 11/17 19:00  
NPS 11/17 21:00 11/17 21:00  
NRB   11/17 20:56 11/17 20:56
NV2 11/17 20:00 11/17 20:00 11/17 20:00
NV3 11/17 20:00 11/17 20:00 11/17 20:00
NY1 11/17 19:00 11/17 19:00 11/17 19:00
OAP 11/17 19:00    
OAQ 11/17 20:00 11/17 20:00 11/17 20:00
OAR      
OH1 11/17 20:00 11/17 20:00 11/17 20:00
OK1 11/17 20:00 11/17 20:00 11/17 20:00
OR1 11/17 19:00 11/17 19:00  
OR2 10/02 09:00 11/17 20:00  
PA1 11/17 20:00 11/17 20:00 12/31 18:00
PA3 11/17 20:00 11/17 20:00  
PIN 06/08 23:00    
PR1 10/27 20:00 10/27 20:00 09/18 08:00
QT1 11/17 20:00 11/17 20:00  
RI1 11/17 20:00 11/17 20:00  
SC1 11/17 20:00 11/17 20:00 11/17 20:00
SD1 11/17 20:00 11/17 20:00 11/17 20:00
SFN 03/05 07:00    
SHA 11/17 20:00 11/17 20:00  
SIC      
SK1 11/17 20:00 11/17 20:00 08/21 16:00
SLO 11/17 20:00 11/17 20:00 11/17 20:00
SMJ 08/07 09:00   08/07 09:00
SR1 11/17 20:00   11/17 20:00
THM 11/17 19:00 11/17 20:00  
TN1 11/17 19:00 11/17 20:00  
TN2 11/17 20:00 11/17 19:00  
TN3 11/17 20:00 11/17 20:00  
TN4   11/17 20:00  
TPCD 01/30 19:00   01/30 19:00
TRX 11/17 20:00 11/17 20:00 11/17 20:00
TX1 11/17 20:00 11/17 20:00 11/17 20:00
UDA      
UNR      
UT1 11/17 20:00 11/17 20:00 10/30 15:58
UTE 11/17 20:00 06/01 01:00  
UTS 11/17 20:00 11/17 20:00  
VA1 11/17 20:00 11/17 20:00  
VG1   11/14 17:34  
VT1 11/17 20:00 11/17 20:00  
WI1 11/17 20:00 11/17 20:00 11/17 20:00
WT1 11/17 20:00    
WV1      
WV2 11/17 20:00 11/17 20:00