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

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