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

January 29, 2023 04:08 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 01/29 02:00 01/29 02:00 02/25 09:00
AF1   08/15 08:00  
AIR   01/28 09:00  
AKC      
AL1 11/01 07:00 01/29 02:00 03/01 09:00
AL2 01/29 02:00 01/29 02:00 01/29 02:00
AL3      
AL4 11/01 07:00 01/29 02:00  
ALG   01/29 02:00  
AZ2 01/29 02:00 01/29 02:00 01/29 02:00
AZ3 01/29 02:00 01/29 02:00 01/29 02:00
AZE   01/29 03:00  
BAA   03/16 16:00  
BC1 01/29 02:00 01/29 02:00 01/29 02:00
BC2 01/29 02:00 01/29 02:00 01/29 02:00
BFA   01/29 03:00  
BH2   01/29 02:00  
BI1   01/29 02:00  
BIH   01/29 03:00  
BK1      
BLK 01/29 02:00 01/29 02:00 01/29 02:00
BLW 01/29 02:00 01/29 02:00  
BPT 01/29 03:00 01/29 03:00 01/29 03:00
BR1   01/29 02:00  
CA1 01/29 03:00 01/29 02:00 08/27 03:00
CA2 01/29 02:00 01/29 02:00  
CA3 01/29 02:00 01/29 02:00 01/29 02:00
CA4 01/29 03:00 01/29 02:00  
CA8 01/29 02:00 01/29 02:00 01/29 02:00
CA9 01/29 03:00 01/29 02:00 01/29 02:00
CAT 08/01 05:00 08/01 05:00  
CHD   01/29 02:00  
CHO 11/29 13:00    
CI1   01/29 02:00  
CMB   01/29 03:00  
CN1      
CN3 01/29 01:00 01/29 01:00 01/29 01:00
CN4      
CO1 01/29 02:00 01/29 02:00 01/29 02:00
CO4      
COG   01/26 15:00  
CRI   01/29 02:00  
CT1 01/29 02:00 01/29 02:00 01/29 02:00
CUR 01/29 02:00 01/29 03:00  
DC1 01/29 02:00 01/29 02:00 01/29 02:00
DE1 01/29 02:00 01/29 02:00  
DN1      
DRN   07/11 09:00  
DUS   01/29 02:00  
EMU      
EP1      
EPA   08/21 12:00  
FL0      
FL1 01/29 02:00 01/29 02:00 01/29 02:00
FL2 01/29 03:00 01/29 02:00 01/29 02:00
FL3 01/29 02:00 01/29 02:00 01/29 02:00
FL4 01/29 02:00 01/29 02:00 01/29 02:00
FS1 01/29 02:00 01/29 02:00 01/25 15:00
GAB   03/10 02:00  
GBU 01/29 02:00 01/29 02:00 01/29 02:00
GFC      
GH1   01/29 02:00  
GN1   01/28 21:00  
GOL      
GT1 01/04 14:00 01/04 14:00 01/09 15:00
HC1   01/29 02:00  
HI1 01/29 02:00 01/29 02:00 01/29 02:00
IA2 12/20 09:00 01/29 02:00  
IA3 11/01 07:00 01/29 02:00  
IL1 01/29 02:00 01/29 02:00  
JDA   01/29 02:00  
JOR 01/29 03:00 01/29 02:00  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   12/28 13:00  
KE1   01/29 02:00  
KM1 12/27 19:00 01/29 03:00  
KS1 01/29 03:00 01/29 02:00 01/29 02:00
KY1 01/29 02:00 01/29 02:00  
KY2 01/29 02:00 01/29 02:00 01/29 02:00
KYI   09/17 09:00  
KZ1   01/29 02:00  
LA1 01/29 03:00 01/29 03:00 02/01 00:00
LAO   01/29 02:00  
LC1      
LPS      
MA1 01/29 02:00 01/29 02:00 01/29 02:00
MAD   01/29 02:00  
MD1 01/29 02:00 01/29 02:00 01/29 02:00
ME1 01/29 02:00 01/29 02:00 01/29 02:00
MEN 01/28 17:00 01/28 17:00 01/28 17:00
MEX   01/29 01:00  
MGN      
ML1   01/29 02:00  
MM1 12/25 06:00 12/25 06:00  
MMR   01/29 03:00  
MOE      
MON 01/29 03:00 01/29 02:00 01/29 02:00
MY1   01/29 02:00  
NC2 01/29 02:00 01/29 02:00 01/29 02:00
NCA 01/29 02:00 01/29 02:00 01/29 02:00
NE2 01/29 02:00 01/29 02:00 01/29 02:00
NEA   01/29 03:00  
NH1 01/29 02:00 01/29 02:00 01/29 02:00
NI1   01/29 02:00  
NI2   01/25 08:00  
NJ1 01/29 02:00 01/29 02:00  
NL1 01/29 02:00 01/29 02:00 01/29 02:00
NM2 01/29 02:00 01/29 02:00 01/29 02:00
NOS 01/29 02:00 01/29 02:00  
NPS 01/29 02:00 01/29 02:00  
NRB   12/31 18:26 12/31 18:26
NV3 01/29 02:00 01/29 02:00 01/29 02:00
OAP 01/29 02:00    
OAQ 01/29 02:00 01/29 02:00 01/29 02:00
OAR      
OCN      
OD1   06/06 13:00  
OH1 01/29 02:00 01/29 02:00 01/29 02:00
OR1 01/29 03:00 01/29 02:00  
OR2 10/06 11:00 01/29 02:00  
PA3 01/29 02:00 01/29 02:00  
PAR      
PIN      
PK1   01/29 02:00  
PK2   01/29 02:00  
PK3   01/29 02:00  
PK4   01/29 02:00  
QA1 01/29 03:00 01/29 03:00  
RI1 01/29 03:00 01/29 02:00  
RIY   12/30 04:00  
RT9      
RWA   01/29 03:00  
SC1 01/29 03:00 01/29 02:00 01/29 02:00
SCS      
SEN   01/29 03:00  
SFN 03/05 07:00    
SHA 01/29 03:00 01/29 02:00  
SIC      
SK1 08/01 05:00 08/01 05:00 08/21 16:00
SLO 01/29 03:00 01/29 03:00 01/29 03:00
SMA 02/04 05:00 02/04 05:00 08/07 09:00
SMJ 01/18 10:00   01/18 10:00
SMS      
SR1 01/29 02:00   01/29 02:00
SU1   01/29 02:00  
SY1   07/28 06:00  
THM 01/29 01:00 01/29 01:00  
TKM      
TN2 01/28 00:00 12/05 13:00 01/01 00:00
TN3 01/29 02:00 01/29 02:00 11/01 00:00
TNC      
TOG   10/04 16:00  
TPCD 01/29 02:00 01/29 02:00 01/29 02:00
TRP   12/21 15:00  
TSI      
TX1 01/29 02:00 01/29 02:00 01/29 02:00
UDA      
UGS      
UNR      
UTE 01/29 02:00 06/01 01:00  
UZB 01/25 16:00 01/29 02:00  
VA1 01/29 02:00 01/29 02:00 01/29 02:00
VG1   01/23 19:24  
VT1 01/29 03:00 01/29 03:00 01/29 03:00
WA1 01/29 02:00 01/29 02:00 01/29 02:00
WES      
WI1 01/29 02:00 01/29 02:00 01/29 02:00
WT1 01/29 02:00    
WV2 01/09 19:00 01/28 20:00  
YER   01/27 21:00