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 17, 2021 07:27 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 09/17 05:00 09/17 05:00 02/25 09:00
AF1   08/15 08:00  
AIR      
AKC      
AL2 09/17 06:00 09/17 06:00 09/17 06:00
AL3      
AL4 09/17 06:00 09/17 06:00  
ALG   09/17 06:00  
AR1 09/17 06:00 09/17 06:00  
AZ2 09/17 06:00 09/17 06:00 09/17 06:00
AZ3 09/17 06:00 09/17 06:00 09/17 06:00
AZ4 09/17 06:00 09/17 06:00 09/17 06:00
AZE   09/08 09:00  
BAA   09/14 03:00  
BC1 09/17 06:00 09/17 06:00 09/17 06:00
BC2 09/17 06:00 09/17 06:00 09/17 06:00
BFA   07/06 07:00  
BH2   09/17 06:00  
BI1   09/17 06:00  
BIH   09/17 07:00  
BK1      
BLW 09/17 06:00 09/17 06:00  
BPT 09/17 06:00 09/17 06:00 09/17 06:00
BR1      
CA1 09/17 06:00 09/17 06:00 08/27 03:00
CA2 09/17 06:00 09/17 06:00  
CA3 09/17 06:00 09/17 06:00 09/17 06:00
CA4 09/17 06:00 09/17 06:00  
CA6 09/17 06:00 09/17 06:00 09/17 06:00
CA8 09/17 06:00 09/17 06:00 09/17 06:00
CA9 09/17 06:00 09/17 06:00 09/17 06:00
CAT 09/15 15:00 09/15 15:00  
CHD   09/17 05:00  
CHO 11/29 13:00    
CI1   09/17 06:00  
CMB   09/17 05:00  
CN1 09/17 06:00 09/17 06:00  
CN3 09/17 04:00 09/17 05:00 09/17 05:00
CN4      
CO1 09/17 06:00 09/17 06:00 09/17 06:00
CO4      
COG      
CRI   09/17 06:00  
CT1 09/17 06:00 09/17 06:00 09/17 06:00
CUR 09/17 05:00 09/17 05:00  
DC1 09/17 06:00 09/17 06:00 04/23 12:00
DE1 09/17 06:00 09/17 06:00  
DN1      
DRN   07/14 09:00  
DUS   09/17 06:00  
EGY   03/16 14:00  
EP1      
EPA   08/21 12:00  
FL0      
FL1 09/17 06:00 09/17 06:00 09/17 06:00
FL2 09/17 06:00 09/17 06:00 09/17 06:00
FL3 09/17 05:00 09/17 05:00 09/17 05:00
FL4 09/17 06:00 09/17 06:00 09/17 06:00
FS1 09/17 06:00 09/17 07:00 09/17 06:00
GAB   03/27 03:00  
GBU 09/17 06:00 09/17 06:00 09/17 06:00
GH1   09/17 06:00  
GN1   06/14 08:00  
GOL      
GT1   09/17 05:00  
HC1   09/17 06:00  
HI1 09/17 06:00 09/17 06:00 09/17 06:00
IA2 09/17 06:00 09/17 06:00  
IA3 09/17 06:00 09/17 06:00  
ID1 09/17 06:00 09/17 07:00 09/17 06:00
IL1 09/17 06:00 09/17 06:00  
JDA   09/17 05:00  
JOR   11/01 21:00  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   09/17 05:00  
KE1   08/11 22:00  
KM1 09/17 06:00 09/17 06:00  
KS1 09/17 06:00 09/17 06:00 09/17 06:00
KY1 09/17 06:00 09/17 06:00  
KY2 09/17 06:00 09/17 06:00 09/17 06:00
KYI   09/02 22:00  
KZ1   09/17 06:00  
LA1 09/17 06:00 09/17 06:00 02/01 00:00
LAO   09/17 06:00  
LC1      
MA1 09/17 06:00 09/17 06:00  
MAD   09/17 06:00  
MD1 09/17 06:00 09/17 06:00 09/17 06:00
ME1 09/17 06:00 09/17 06:00 09/17 04:00
MEN 09/17 04:00 09/17 06:00 09/17 06:00
MEX   09/09 08:00  
ML1   05/30 13:00  
MLD   09/17 07:00  
MM1 09/17 06:00 09/17 06:00  
MMR   08/26 21:00  
MO1 09/17 06:00 09/17 06:00 09/17 06:00
MOE      
MON 09/17 06:00 09/17 06:00 09/17 06:00
MT1 09/17 06:00 09/17 06:00 09/17 06:00
MY1   03/03 14:00  
NC1 09/17 06:00 09/17 06:00 09/17 06:00
NC2 09/17 06:00 09/17 06:00 09/17 06:00
NCA 09/17 06:00 09/17 06:00 09/17 06:00
NE2 09/15 13:00 09/15 13:00 09/15 13:00
NEA   09/17 07:00  
NH1 09/17 06:00 09/17 06:00 09/17 06:00
NI1   09/17 05:00  
NI2   09/17 05:00  
NJ1 09/17 06:00 09/17 06:00  
NL1 09/17 06:00 09/17 06:00 07/07 05:57
NM2 09/17 06:00 09/17 06:00 09/17 06:00
NOS 09/16 23:00 09/17 05:00  
NPS 09/17 06:00 09/17 06:00  
NRB   12/31 18:26 12/31 18:26
NV2 09/17 06:00 09/17 06:00 09/17 06:00
NV3 09/17 06:00 09/17 06:00 09/17 06:00
OAP 09/17 05:00    
OAQ 06/11 11:00 09/07 08:00 09/07 08:00
OAR      
OD1   06/06 12:00  
OH1 09/17 06:00 09/17 06:00 09/17 06:00
OK1 09/17 06:00 09/17 06:00 09/17 06:00
OR1 09/17 06:00 09/17 06:00  
OR2 09/17 06:00 09/17 06:00  
PA3 09/17 06:00 09/17 06:00  
PIN      
PK1   09/07 12:00  
PK2   09/17 06:00  
PK3   09/17 06:00  
PK4   09/17 06:00  
QA1   12/30 11:00  
RI1 09/17 06:00 09/17 06:00  
RIY   09/17 05:00  
SC1 09/17 06:00 09/17 06:00 09/17 06:00
SEN      
SFN 03/05 07:00    
SHA 09/17 06:00 09/17 06:00  
SIC      
SK1 09/17 06:00 09/17 06:00 08/21 16:00
SLO 09/17 06:00 09/17 06:00 09/17 06:00
SMA 02/04 05:00 02/04 05:00 08/07 09:00
SMJ 09/15 23:00   09/15 23:00
SR1 09/17 06:00   09/17 06:00
SU1   09/17 06:00  
SY1   02/23 18:00  
THM 09/17 05:00 09/17 06:00  
TKM      
TN2 09/17 05:00 09/17 06:00 01/01 00:00
TN3 09/17 06:00 09/17 06:00 11/01 00:00
TPCD 06/01 06:00 06/01 06:00 06/01 06:00
TX1 09/17 06:00 09/17 06:00 09/17 06:00
UDA      
UNR      
UTE 09/17 06:00 06/01 01:00  
UZB 06/27 16:00 09/17 06:00  
VA1 09/17 06:00 09/17 06:00  
VG1   01/23 19:24  
VT1 09/17 06:00 09/17 06:00 09/17 06:00
WA1 09/17 06:00 09/17 06:00 09/17 06:00
WI1 09/17 06:00 09/17 06:00 09/17 06:00
WT1 09/17 06:00    
WV2 09/17 06:00 09/17 06:00  
YER