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
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A comprehensive list of EPA air pollution data sources

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

September 23, 2017 18:27 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 09/23 16:00 09/23 16:00 02/25 09:00
AIR      
AK1 09/23 17:00 09/23 17:00 09/23 17:00
AL1 09/23 17:00 09/23 17:00 10/28 13:00
AL2 09/23 17:00 09/23 17:00 09/23 17:00
AL3      
AL4 09/23 17:00 09/23 17:00  
AR1 09/23 17:00 09/23 17:00  
AZ1 09/23 16:00 09/23 17:00 09/23 17:00
AZ2 09/23 17:00 09/23 17:00 09/23 17:00
AZ3 09/23 17:00 09/23 17:00 09/23 17:00
AZ4 09/23 17:00 07/10 15:42 09/23 17:00
BC1 09/23 17:00 09/23 17:00 09/23 17:00
BC2 09/23 17:00 09/23 17:00 09/23 17:00
BLW 09/23 17:00 03/17 13:00  
CA0 09/23 17:00 09/23 17:00 09/23 17:00
CA1 09/23 17:00 09/23 17:00 08/27 03:00
CA2 09/23 17:00 09/23 17:00  
CA3 09/23 17:00 09/23 17:00 09/23 17:00
CA4 09/23 17:00 09/23 17:00  
CA5 09/23 17:00 09/23 17:00 09/23 17:00
CA6 09/23 16:00 09/23 16:00 09/23 16:00
CA7 09/23 17:00 09/23 17:00 09/23 17:00
CA8 09/23 17:00 09/23 18:00 09/23 17:00
CA9 09/23 17:00 09/23 17:00 09/23 17:00
CAT 09/23 17:00 06/06 14:00  
CHO 09/23 17:00    
CK1 09/23 17:00 09/23 17:00 09/23 17:00
CMB   09/23 17:00  
CN1 09/23 17:00 09/23 17:00  
CN2 09/23 17:00    
CN3 09/23 17:00 09/23 17:00 09/23 17:00
CN4 09/23 16:00 09/23 16:00  
CO1 09/23 17:00 09/23 17:00 09/23 17:00
CO4      
CT1 09/23 17:00 09/23 17:00 09/23 17:00
DC1 09/23 17:00 09/23 18:25 08/31 23:00
DE1 09/23 17:00 09/23 17:00  
DN1      
EP1      
EPA   08/21 12:00  
FL2 09/23 17:00 09/23 17:00  
FL3 09/23 17:00 09/23 17:00 09/23 17:00
FL4 09/23 17:00 09/23 17:00 09/23 17:00
FS1   09/23 18:00 08/05 04:00
GBU 09/23 17:00 09/23 18:00 09/23 17:00
GOL      
HC1   09/23 17:00  
HI1 09/23 17:00 09/23 17:00 09/23 17:00
IA1 09/23 17:00 09/23 17:00 09/23 17:00
IA2 09/23 17:00 09/23 17:00  
IA3 09/23 17:00 09/23 17:00  
ID1 09/23 17:00 09/23 17:00 09/23 17:00
IEG 09/23 17:00 09/23 17:00 09/23 17:00
IL1 09/23 17:00 09/23 17:00  
IN4 09/23 17:00 09/23 17:00 09/23 17:00
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KM1 09/23 17:00 09/23 17:00  
KS1 09/23 17:00 09/23 17:00 09/23 17:00
KY1 09/23 17:00 09/23 17:00  
LA1 09/23 17:00 09/23 17:00 09/23 17:00
LC1      
MA1 09/23 17:00 09/23 17:00  
MD1 09/23 17:00 09/23 17:00  
ME1 09/23 17:00 09/23 17:00 09/23 17:00
MEN 09/23 17:00 09/23 17:00 09/23 17:00
MI1 09/23 17:00 09/23 17:00 09/23 17:00
MM1 09/23 17:00 09/23 17:00  
MO1 09/23 17:00 09/23 17:00 09/23 17:00
MOE      
MON 09/23 16:00 09/23 16:00 09/23 16:00
MS1 09/23 17:00 09/23 17:00  
MT1 09/23 17:00 09/23 17:00 09/23 17:00
MX1 10/27 03:00 09/23 16:00 03/31 10:00
NC1 09/23 17:00 09/23 17:00 09/23 17:00
NC2 09/23 17:00 09/23 17:00  
NC3 09/23 17:00 09/23 17:00 11/30 23:00
NCA 09/23 17:00 09/23 17:00 09/23 17:00
NE1 09/23 17:00 09/23 17:00 09/23 17:00
NE2 09/23 17:00 09/23 17:00 09/23 17:00
NH1 09/23 17:00 09/23 17:00 09/23 17:00
NJ1 09/23 17:00 09/23 17:00  
NL1 09/23 17:00 09/23 17:00  
NM1 09/23 17:00 09/23 17:00 09/23 17:00
NM2 09/23 17:00 09/23 17:00 09/23 17:00
NOS 09/23 16:00 09/23 16:00  
NPS 09/23 17:00 09/23 18:00  
NRB   09/23 17:36 09/23 17:36
NV2 09/23 17:00 09/23 17:00 09/23 17:00
NV3 09/23 17:00 09/23 17:00 09/23 17:00
NY1 09/23 17:00 09/23 17:00 09/23 17:00
OAP 09/23 17:00    
OAQ 09/23 17:00 09/23 17:00 09/23 17:00
OAR      
OH1 09/23 17:00 09/23 17:00 09/23 17:00
OK1 09/23 17:00 09/23 17:00 09/23 17:00
OR1 09/23 17:00 09/23 17:00  
OR2 09/23 17:00 09/23 17:00  
PA1 09/23 17:00 09/23 17:00 12/31 18:00
PA3 09/23 17:00 09/23 17:00  
PIN 06/08 23:00    
PR1 09/20 00:00 09/20 00:00 09/18 08:00
QT1 09/23 17:00 09/23 17:00  
RI1 09/23 17:00 09/23 17:00  
SC1 09/23 17:00 09/23 17:00 09/23 17:00
SD1 09/23 17:00 09/23 17:00 09/23 17:00
SFN 03/05 07:00    
SHA 09/23 17:00 09/23 17:00  
SIC      
SK1 09/23 17:00 09/23 17:00 08/21 16:00
SLO 09/23 17:00 09/23 17:00 09/23 17:00
SMJ 08/07 09:00   08/07 09:00
SR1 09/23 17:00   09/23 17:00
THM 09/21 10:00 09/21 02:00  
TN1 09/23 16:00 09/23 17:00  
TN2 09/23 17:00 09/23 16:00  
TN3 09/23 17:00 09/23 17:00  
TN4 09/23 17:00 09/20 13:00  
TPCD 01/30 19:00   01/30 19:00
TRX 09/23 17:00 09/23 17:00 09/23 17:00
TX1 09/23 17:00 09/23 17:00 09/23 17:00
UDA      
UNR      
UT1 09/23 17:00 09/23 17:00 04/26 13:00
UTE 09/23 17:00 06/01 01:00  
UTS 09/23 17:00 09/23 17:00  
VA1 09/23 17:00 09/23 17:00  
VG1   09/08 11:13  
VT1 09/23 17:00 09/23 17:00  
WI1 09/23 17:00 09/23 17:00 09/23 17:00
WT1 09/23 17:00    
WV1      
WV2 09/23 17:00 09/23 17:00