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

April 15, 2024 01:00 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 04/14 23:00 04/14 23:00 02/25 09:00
AF1   08/15 08:00  
AIR   04/05 17:00  
AKC      
AL1 04/14 23:00 04/14 23:00 04/14 23:00
AL2 04/14 23:00 04/14 23:00 04/14 23:00
AL3      
AL4 04/14 23:00 04/14 23:00 04/14 23:00
ALG   04/14 23:00  
AZ2 04/14 23:00 04/14 23:00 04/14 23:00
AZ3 04/14 23:00 04/14 23:00 04/14 23:00
AZ4 04/14 23:00 04/14 23:00 04/14 23:00
AZE   04/15 00:00  
BAA   03/16 16:00  
BC1 04/14 23:00 04/14 23:00 04/14 23:00
BC2 04/14 23:00 04/14 23:00 04/14 23:00
BFA   04/15 00:00  
BH2   04/15 00:00  
BI1   04/14 23:00  
BIH   04/15 00:00  
BK1      
BLK 04/14 23:00 04/14 23:00 04/14 23:00
BLW 04/14 23:00 04/14 23:00  
BPT 04/14 23:00 04/14 23:00 04/14 23:00
BR1   04/14 23:00  
BZ1   04/14 23:00  
CA0 04/14 23:00 04/14 23:00 04/14 23:00
CA1 04/14 23:00 04/14 23:00 08/27 03:00
CA2 04/14 23:00 04/14 23:00  
CA3 04/14 23:00 04/14 23:00 04/14 23:00
CA4 04/14 23:00 04/14 23:00 04/14 23:00
CA8 04/14 23:00 04/14 23:00 04/14 23:00
CA9 04/14 23:00 04/14 23:00 04/14 23:00
CAT 04/15 00:00 04/15 00:00  
CHD   04/14 23:00  
CHO 11/29 13:00    
CI1   04/14 23:00  
CMB   04/15 00:00  
CN1      
CN2 04/14 23:00    
CN3 04/14 23:00 04/14 23:00 05/21 01:00
CN4      
CO1 04/14 23:00 04/14 23:00 04/14 23:00
CO4      
COG   05/09 10:00  
CRI   09/13 18:00  
CT1 04/14 23:00 04/14 23:00 04/14 23:00
CUR 11/01 02:00 05/19 10:00  
DC1 04/14 23:00 04/14 23:00 09/07 08:00
DE1 04/14 23:00 04/14 23:00  
DN1      
DRN   07/11 09:00  
DUS   04/14 23:00  
EKD   04/14 23:00  
EMU      
EP1      
EPA   08/21 12:00  
FL0      
FL1 04/14 23:00 04/14 23:00 04/14 23:00
FL2 04/14 23:00 04/14 23:00 04/14 22:00
FL3 04/14 21:00 04/14 21:00 04/14 19:00
FL4 04/14 23:00 04/14 23:00 04/14 23:00
FL7      
FS1 04/14 23:00 04/15 00:00 04/15 00:00
GA1 04/14 23:00 04/14 23:00 04/14 23:00
GAB   03/10 02:00  
GBU 04/14 23:00 04/14 23:00 04/14 23:00
GFC      
GH1   04/12 19:00  
GN1   10/31 12:00  
GOL      
GT1 03/06 12:00 04/14 23:00 01/17 15:00
HC1   01/28 19:00  
HI1 04/14 23:00 04/14 23:00 04/14 23:00
IA2 04/14 23:00 04/14 23:00  
IA3 04/14 23:00 04/14 23:00  
IL1 04/14 23:00 04/14 23:00  
JCE      
JDA   04/14 23:00  
JOR 03/06 10:00 03/24 17:00  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   04/14 23:00  
KE1   03/08 05:00  
KM1 04/15 01:00 04/15 01:00  
KS1 04/14 23:00 04/14 23:00 04/14 23:00
KY1 04/14 23:00 04/14 23:00  
KY2 04/14 23:00 04/14 23:00 04/14 23:00
KYI   09/17 09:00  
KZ1   04/14 23:00  
LA1 04/14 23:00 04/14 23:00 03/01 00:00
LAO   04/14 23:00  
LC1      
LEM      
LPS      
MA1 04/14 22:00 04/14 22:00 04/14 22:00
MAD   04/14 23:00  
MAP 04/14 23:00 04/14 23:00  
MD1 04/14 23:00 04/14 23:00 04/14 23:00
ME1 04/14 23:00 04/14 23:00 04/14 23:00
MEN 04/12 16:00 04/14 23:00 04/14 23:00
MEX   01/17 14:00  
MGN      
ML1   10/17 08:00  
MM1 04/14 23:00 04/14 23:00  
MMR   04/15 00:00  
MOE      
MON 04/14 23:00 04/14 23:00 04/14 23:00
MS1 04/14 23:00 04/14 23:00 04/14 23:00
MT1 04/14 23:00 04/14 23:00 04/14 23:00
MX2 04/14 23:00 04/14 23:00 04/14 23:00
MY1   04/15 00:00  
NC2 04/14 23:00 04/14 23:00 04/14 23:00
NCA 04/14 23:00 04/14 23:00 04/14 23:00
ND1 04/14 23:00 04/14 23:00 04/14 23:00
NE2 04/14 23:00 04/14 23:00 04/14 23:00
NEA   04/15 00:00  
NH1 04/14 23:00 04/14 23:00 04/14 23:00
NI1   04/14 23:00  
NI2   01/02 04:00  
NJ1 04/14 23:00 04/14 23:00  
NL1 04/14 23:00 04/14 23:00 01/22 13:00
NM2 04/14 23:00 04/14 23:00 04/14 23:00
NOS 04/14 23:00 04/14 23:00  
NPS 04/14 23:00 04/14 23:00  
NRB   12/31 18:26 12/31 18:26
NV2 04/14 23:00 04/14 23:00 04/14 23:00
NV3 04/14 23:00 04/14 23:00 04/14 23:00
OAP 04/14 23:00    
OAQ 04/14 23:00 04/14 23:00 04/14 23:00
OAR      
OCN      
OD1   06/06 13:00  
OH1 04/14 23:00 04/14 23:00 04/14 23:00
OR1 04/14 23:00 04/14 23:00  
OR2 10/05 12:00 04/14 23:00  
OTH      
PA2 04/14 23:00 04/14 23:00 04/14 23:00
PA3 04/14 23:00 04/14 23:00  
PAR   04/14 23:00  
PH1   04/14 23:00  
PIN      
PK1   04/14 23:00  
PK2   04/14 23:00  
PK3   04/14 23:00  
PK4   04/14 23:00  
QA1 09/19 06:00 11/30 03:00  
RI1 04/14 23:00 04/14 23:00  
RIY   12/30 04:00  
RT9      
RWA   04/14 23:00  
SC1 04/14 23:00 04/14 23:00 04/14 23:00
SCS      
SEN   04/15 00:00  
SFN 03/05 07:00    
SHA 04/14 23:00 04/14 23:00  
SIC      
SK1 04/14 23:00 04/14 23:00  
SLO 04/14 23:00 04/14 23:00 04/14 23:00
SMA 02/04 05:00 02/04 05:00 08/07 09:00
SMJ 04/09 19:00 04/09 19:00 04/09 19:00
SMS      
SR1 04/14 23:00   04/14 23:00
SU1   05/04 14:00  
SY1   04/14 23:00  
TEL      
THM 04/14 23:00 04/14 23:00 04/14 23:00
TN1 04/14 23:00 04/14 23:00  
TN2 04/14 23:00 04/14 23:00 12/31 23:00
TN3 04/14 23:00 04/14 23:00 01/01 00:00
TNC      
TOG   04/15 00:00  
TPCD 04/14 23:00 04/14 23:00 04/14 23:00
TRP   04/14 06:00  
TRX 04/14 23:00 04/15 01:00 04/14 23:00
TSI      
TX1 04/14 23:00 04/14 23:00 04/14 23:00
UDA      
UGS      
UNR      
UTE 04/14 23:00 06/01 01:00  
UTM      
UZB 04/14 23:00 04/14 23:00  
VA1 04/14 23:00 04/14 23:00 04/14 23:00
VG1   01/23 19:24  
VT1 04/14 23:00 04/14 23:00 04/14 23:00
WA1 04/14 23:00 04/14 23:00 04/14 23:00
WES      
WI1 04/14 23:00 04/14 23:00 04/14 23:00
WT1 04/14 23:00    
WV2 04/14 23:00 04/14 23:00  
YER   06/15 07:00