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

December 16, 2017 03:47 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 12/16 02:00 12/16 02:00 02/25 09:00
AIR      
AK1 12/16 02:00 12/16 02:00 12/16 02:00
AL1 12/16 02:00 12/16 02:00 10/28 13:00
AL2 12/16 02:00 12/16 02:00 12/16 02:00
AL3      
AL4 12/16 01:00 12/16 01:00  
AR1 12/16 02:00 12/16 02:00  
AZ1 12/16 02:00 12/16 02:00 12/16 02:00
AZ2 12/16 02:00 12/16 02:00 12/16 02:00
AZ3 12/16 02:00 12/16 02:00 12/16 02:00
AZ4 12/16 02:00 07/10 15:42 12/16 02:00
BC1 12/16 02:00 12/16 02:00 12/16 02:00
BC2 12/16 02:00 12/16 02:00 12/16 02:00
BLW 12/16 02:00 03/17 13:00  
CA0 12/16 02:00 10/04 11:00 12/16 02:00
CA1 12/16 02:00 12/16 02:00 08/27 03:00
CA3 12/16 02:00 12/16 02:00 12/16 02:00
CA4 12/16 02:00 12/16 02:00  
CA5 12/16 02:00 12/16 02:00 12/16 02:00
CA6 12/16 02:00 12/16 02:00 12/16 02:00
CA7 12/16 02:00 12/16 02:00 12/16 02:00
CA8 12/16 02:00 12/16 03:00 12/16 02:00
CA9 12/16 02:00 12/16 02:00 12/16 02:00
CAT 12/16 02:00 06/06 14:00  
CHO 12/13 09:00    
CK1 12/15 17:00 12/16 02:00 12/16 02:00
CMB   12/16 02:00  
CN1 12/16 02:00 12/16 02:00  
CN2 12/16 02:00    
CN3 12/16 01:00 12/16 01:00 12/16 01:00
CN4 12/16 02:00 12/16 02:00  
CO1 12/16 02:00 12/16 02:00 12/16 02:00
CO4      
CT1 12/16 02:00 12/16 03:45 12/16 02:00
DC1 12/16 02:00 12/16 02:00 12/16 02:00
DE1 12/16 02:00 12/16 02:00  
DN1      
EP1      
EPA   08/21 12:00  
FL2 12/16 02:00 12/16 02:00  
FL3 12/16 02:00 12/16 02:00 12/16 02:00
FL4 12/16 02:00 12/16 02:00 12/16 02:00
FS1   12/16 03:00 08/05 04:00
GBU 12/16 02:00 12/16 02:00 12/16 02:00
GOL      
HC1   12/16 02:00  
HI1 12/16 02:00 12/16 02:00 12/16 02:00
IA1 12/16 02:00 12/16 02:00 12/16 00:00
IA2 12/16 02:00 12/16 02:00  
IA3 11/01 08:00 12/16 02:00  
ID1 12/16 02:00 12/16 03:00 12/16 02:00
IEG 12/16 03:00 12/16 03:00 12/16 03:00
IL1 12/16 02:00 12/16 02:00  
IN4 12/16 02:00 12/16 02:00 12/16 02:00
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KM1 12/16 03:00 12/16 03:00  
KS1 12/16 02:00 12/16 02:00 12/16 02:00
KY1 12/16 02:00 12/16 02:00  
LA1 12/16 02:00 12/16 02:00 12/16 02:00
LC1      
MA1 12/16 01:00 12/16 01:00  
MD1 12/16 02:00 12/16 02:00  
ME1 12/16 02:00 12/16 02:00 12/14 07:00
MEN 12/16 02:00 12/16 02:00 12/16 02:00
MI1 12/16 02:00 12/16 02:00 12/16 02:00
MM1 12/16 02:00 12/16 02:00  
MO1 12/16 00:00 12/16 00:00 12/16 00:00
MOE      
MON 12/16 01:00 12/16 02:00 12/16 01:00
MS1 12/16 02:00 12/16 02:00  
MT1 12/16 02:00 12/16 02:00 12/16 02:00
NC1 12/16 02:00 12/16 02:00 12/16 02:00
NC2 12/05 11:00 12/05 11:00  
NC3 12/16 02:00 12/16 02:00 07/31 23:00
NCA 12/16 02:00 11/17 14:00 12/16 02:00
NE1   12/16 02:00 12/16 02:00
NE2 12/16 02:00 12/16 02:00 12/16 02:00
NH1 12/16 02:00 12/16 02:00 12/16 02:00
NJ1 12/15 18:00 12/15 18:00  
NL1 12/16 02:00 12/16 02:00  
NM2 12/16 02:00 12/16 02:00 12/16 02:00
NOS 12/16 00:00 12/16 02:00  
NPS 12/16 02:00 12/16 02:00  
NRB   12/16 02:44 12/16 02:44
NV2 12/16 01:00 12/16 01:00 12/16 01:00
NV3 12/16 02:00 12/16 02:00 12/16 02:00
NY1 12/16 02:00 12/16 02:00 12/16 02:00
OAP 12/16 03:00    
OAQ 12/16 02:00 12/16 02:00 12/16 02:00
OAR      
OH1 12/16 02:00 12/16 02:00 12/16 02:00
OK1 12/16 02:00 12/16 02:00 12/16 02:00
OR1 12/16 02:00 12/16 02:00  
OR2 10/02 09:00 12/16 02:00  
PA1 12/16 02:00 12/16 02:00 12/31 18:00
PA3 12/16 02:00 12/16 02:00  
PIN 06/08 23:00    
PR1 10/27 20:00 10/27 20:00 09/18 08:00
QT1 12/04 09:00 12/16 02:00  
RI1 12/16 02:00 12/16 02:00  
SC1 12/15 22:00 12/15 22:00 12/15 22:00
SD1 12/16 02:00 12/16 02:00 12/16 02:00
SFN 03/05 07:00    
SHA 12/16 02:00 12/16 02:00  
SIC      
SK1 12/16 02:00 12/16 02:00 08/21 16:00
SLO 12/16 02:00 12/16 02:00 12/16 02:00
SMJ 08/07 09:00   08/07 09:00
SR1 12/16 02:00   12/16 01:00
THM 12/16 02:00 12/16 02:00  
TN1 12/16 02:00 12/16 02:00  
TN2 12/15 16:00 12/16 01:00  
TN3 12/16 02:00 12/16 02:00  
TN4   12/16 02:00  
TPCD 01/30 19:00   01/30 19:00
TRX 12/16 02:00 12/16 02:00 12/16 02:00
TX1 12/16 02:00 12/16 02:00 12/16 02:00
UDA      
UNR      
UT1 12/16 02:00 12/16 02:00 11/01 01:00
UTE 12/16 02:00 06/01 01:00  
UTS 12/16 02:00 12/16 02:00  
VA1 12/16 02:00 12/16 02:00  
VG1   12/16 03:38  
VT1 12/16 02:00 12/16 02:00  
WI1 12/16 02:00 12/16 02:00 12/16 02:00
WT1 12/16 01:00    
WV1      
WV2 12/15 20:00 12/15 20:00