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

March 19, 2024 06:34 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 03/19 05:00 03/19 05:00 02/25 09:00
AF1   08/15 08:00  
AIR   01/23 16:00  
AKC      
AL1 03/19 05:00 03/19 05:00 03/19 05:00
AL2 03/19 05:00 03/19 05:00 03/19 05:00
AL3      
AL4 03/19 05:00 03/19 05:00 03/19 05:00
ALG   03/19 05:00  
AZ2 03/19 05:00 03/19 05:00 03/19 05:00
AZ3 03/19 05:00 03/19 05:00 03/19 05:00
AZ4 03/19 05:00 03/19 05:00 03/19 05:00
AZE   03/19 05:00  
BAA   03/16 16:00  
BC1 03/19 05:00 03/19 05:00 03/19 05:00
BC2 03/19 05:00 03/19 05:00 03/19 05:00
BFA   02/14 13:00  
BH2   03/19 05:00  
BI1   03/19 05:00  
BIH   03/19 06:00  
BK1      
BLK 03/19 05:00 03/19 05:00 03/19 05:00
BLW 03/19 05:00 03/19 05:00  
BPT 03/19 05:00 03/19 05:00 03/19 05:00
BR1   03/19 05:00  
BZ1   03/19 05:00  
CA0 03/19 05:00 03/19 05:00 03/19 05:00
CA1 03/19 05:00 03/19 05:00 08/27 03:00
CA2 03/19 05:00 03/19 05:00  
CA3 03/19 05:00 03/19 05:00 03/19 05:00
CA4 03/19 05:00 03/19 05:00 03/19 05:00
CA8 03/19 05:00 03/19 05:00 03/19 05:00
CA9 03/19 05:00 03/19 05:00 03/19 05:00
CAT 03/19 06:00 03/19 06:00  
CHD   03/19 05:00  
CHO 11/29 13:00    
CI1   03/15 06:00  
CMB   03/19 05:00  
CN1      
CN2 03/19 05:00    
CN3 03/19 05:00 03/19 05:00 05/21 01:00
CN4      
CO1 03/19 05:00 03/19 05:00 03/19 05:00
CO4      
COG   05/09 10:00  
CRI   09/13 18:00  
CT1 03/19 05:00 03/19 05:00 03/19 05:00
CUR 11/01 02:00 05/19 10:00  
DC1 03/19 05:00 03/19 05:00 09/07 08:00
DE1 03/19 05:00 03/19 05:00  
DN1      
DRN   07/11 09:00  
DUS   03/19 05:00  
EKD   03/19 05:00  
EMU      
EP1      
EPA   08/21 12:00  
FL0      
FL1 03/19 05:00 03/19 05:00 03/19 05:00
FL2 03/19 05:00 03/19 05:00 03/19 05:00
FL3 03/19 05:00 03/19 05:00 03/19 05:00
FL4 03/19 05:00 03/19 05:00 03/19 05:00
FL7      
FS1 03/19 05:00 03/19 06:00 03/19 05:00
GA1 03/19 05:00 03/19 05:00 03/19 05:00
GAB   03/10 02:00  
GBU 03/19 05:00 03/19 05:00 03/19 05:00
GFC      
GH1   03/19 05:00  
GN1   10/31 12:00  
GOL      
GT1 03/06 12:00 03/19 05:00 01/17 15:00
HC1   01/28 19:00  
HI1 03/19 05:00 03/19 06:00 03/19 05:00
IA2 03/19 05:00 03/19 05:00  
IA3 03/19 05:00 03/19 05:00  
IL1 03/19 05:00 03/19 05:00  
JCE      
JDA   03/19 05:00  
JOR 03/06 10:00 03/19 05:00  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   03/19 05:00  
KE1   03/08 05:00  
KM1 03/19 05:00 03/19 06:00  
KS1 03/19 05:00 03/19 05:00 03/19 05:00
KY1 03/19 05:00 03/19 05:00  
KY2 03/19 05:00 03/19 05:00 03/19 05:00
KYI   09/17 09:00  
KZ1   03/19 05:00  
LA1 03/19 05:00 03/19 05:00 02/01 00:00
LAO   03/19 05:00  
LC1      
LEM      
LPS      
MA1 03/19 05:00 03/19 05:00 03/19 05:00
MAD   03/19 05:00  
MAP 03/19 05:00 03/19 05:00  
MD1 03/19 05:00 03/19 05:00 03/19 05:00
ME1 03/19 05:00 03/19 05:00 03/19 05:00
MEN 03/19 05:00 03/19 05:00 03/19 05:00
MEX   01/17 14:00  
MGN      
ML1   10/17 08:00  
MM1 03/19 05:00 03/19 05:00  
MMR   03/19 06:00  
MOE      
MON 03/19 05:00 03/19 05:00 03/19 05:00
MS1 03/19 05:00 03/19 05:00 03/19 05:00
MT1 03/19 05:00 03/19 05:00 03/19 05:00
MX2 03/13 08:00 03/13 08:00 03/19 05:00
MY1   03/15 19:00  
NC2 03/19 05:00 03/19 05:00 03/19 05:00
NCA 03/19 05:00 03/19 05:00 03/19 05:00
ND1 03/19 05:00 03/19 05:00 03/19 05:00
NE2 03/19 05:00 03/19 05:00 03/19 05:00
NEA   03/19 06:00  
NH1 03/19 05:00 03/19 05:00 03/19 05:00
NI1   03/19 05:00  
NI2   01/02 04:00  
NJ1 03/19 05:00 03/19 05:00  
NL1 03/19 04:00 03/19 04:00 01/22 13:00
NM2 03/19 05:00 03/19 05:00 03/19 05:00
NOS 03/19 05:00 03/19 05:00  
NPS 03/19 05:00 03/19 05:00  
NRB   12/31 18:26 12/31 18:26
NV2 03/19 05:00 03/19 05:00 03/19 05:00
NV3 03/19 05:00 03/19 05:00 03/19 05:00
OAP 03/19 05:00    
OAQ 03/19 04:00 03/19 05:00 03/19 05:00
OAR      
OCN      
OD1   06/06 13:00  
OH1 03/19 05:00 03/19 05:00 03/19 05:00
OR1 03/19 05:00 03/19 05:00  
OR2 10/05 12:00 03/19 05:00  
OTH      
PA2 03/19 05:00 03/19 05:00 03/19 05:00
PA3 03/19 05:00 03/19 05:00  
PAR   03/19 06:00  
PH1   03/19 05:00  
PIN      
PK1   03/19 05:00  
PK2   03/19 05:00  
PK3   03/19 05:00  
PK4   03/19 05:00  
QA1 09/19 06:00 11/30 03:00  
RI1 03/19 05:00 03/19 05:00  
RIY   12/30 04:00  
RT9      
RWA   03/19 05:00  
SC1 03/19 05:00 03/19 05:00 03/19 05:00
SCS      
SEN   03/19 05:00  
SFN 03/05 07:00    
SHA 03/19 05:00 03/15 09:00  
SIC      
SK1 03/19 05:00 03/19 05:00  
SLO 03/19 05:00 03/19 05:00 03/19 05:00
SMA 02/04 05:00 02/04 05:00 08/07 09:00
SMJ 02/29 18:00 02/29 18:00 02/29 18:00
SMS      
SR1 03/19 05:00   03/19 05:00
SU1   05/04 14:00  
SY1   03/19 05:00  
TEL      
THM 03/19 05:00 03/19 05:00 03/19 05:00
TKM      
TN1 03/19 05:00 03/19 05:00  
TN2 03/19 05:00 03/19 05:00 09/30 23:00
TN3 03/19 05:00 03/19 05:00 10/01 00:00
TNC      
TOG   03/19 05:00  
TPCD 03/19 05:00 03/19 05:00 03/19 05:00
TRP   03/19 05:00  
TRX 03/19 07:00 03/19 05:00 03/19 07:00
TSI      
TX1 03/19 05:00 03/19 05:00 03/19 05:00
UDA      
UGS      
UNR      
UTE 03/19 05:00 06/01 01:00  
UTM      
UZB 03/19 05:00 03/19 05:00  
VA1 03/19 05:00 03/19 05:00 03/19 05:00
VG1   01/23 19:24  
VT1 03/19 05:00 03/19 05:00 03/19 05:00
WA1 03/19 05:00 03/19 05:00 03/19 05:00
WES      
WI1 03/19 05:00 03/19 05:00 03/19 05:00
WT1 03/19 05:00    
WV2 03/19 05:00 03/19 05:00  
YER   06/15 07:00