Monthly System Maintenance Thursday, December 1st, 7:00 p.m. to Midnight ET.

The AirNow Data Management Center will be performing routine system maintenance on Thursday, December 1st, 2022 from 7:00pm – Midnight ET. Data feeds and websites, including www.airnowapi.org, https://www.airnowtech.org/, and http://files.airnowtech.org/ may be unavailable or have delayed updates until maintenance is completed.

Posted November 25, 2022, 08:16 (PT)

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
Register for an AirNow-Tech Account

A comprehensive list of EPA air pollution data sources

Register with AirNow API for an automatic feed of AirNow air quality data

Color Legend
Green Current Yellow 2 to 6 hrs old
Red over 6 hrs old Gray Unknown status

November 27, 2022 04:01 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 11/27 02:00 11/27 02:00 02/25 09:00
AF1   08/15 08:00  
AIR   11/27 02:00  
AKC      
AL2 11/27 02:00 11/27 02:00 11/27 02:00
AL3      
AL4 11/01 07:00 11/27 02:00  
ALG   11/19 14:00  
AZ2 11/27 02:00 11/27 02:00 11/27 02:00
AZ3 11/27 02:00 11/27 02:00 11/27 02:00
AZ4 11/27 02:00 11/27 02:00 11/27 02:00
AZE   11/27 02:00  
BAA   03/16 16:00  
BC1 11/27 02:00 11/27 02:00 11/27 02:00
BC2 11/27 02:00 11/27 02:00 11/27 02:00
BFA   11/05 17:00  
BH2   11/25 05:00  
BI1   11/27 02:00  
BIH   11/27 03:00  
BK1      
BLK 11/27 02:00 11/27 02:00 11/27 02:00
BLW 11/27 02:00 11/27 02:00  
BPT 11/27 02:00 11/27 02:00 11/27 02:00
BR1   08/10 11:00  
CA1 11/27 02:00 11/27 02:00 08/27 03:00
CA2 11/27 02:00 11/27 02:00  
CA3 11/27 02:00 11/27 02:00 11/27 02:00
CA4 11/27 02:00 11/27 02:00  
CA8 11/27 02:00 11/27 02:00 11/27 02:00
CA9 11/27 02:00 11/27 02:00 11/27 02:00
CAT 08/01 05:00 08/01 05:00  
CHD   11/27 02:00  
CHO 11/29 13:00    
CI1   11/27 01:00  
CMB   11/27 03:00  
CN1      
CN3 11/06 07:00 11/06 07:00 11/06 07:00
CN4      
CO1 11/27 02:00 11/27 02:00 11/27 02:00
CO4      
COG   10/28 08:00  
CRI   11/27 02:00  
CT1 11/27 02:00 11/27 02:00 11/27 02:00
CUR 11/27 02:00 11/03 01:00  
DC1 11/27 02:00 11/27 02:00 11/22 11:00
DE1 11/27 02:00 11/27 02:00  
DN1      
DRN   07/11 09:00  
DUS   11/26 08:00  
EMU      
EP1      
EPA   08/21 12:00  
FL0      
FL1 11/27 01:00 11/27 01:00 11/26 17:00
FL2 11/27 02:00 11/27 02:00 11/27 02:00
FL3 11/27 02:00 11/27 02:00 11/27 02:00
FL4 11/27 02:00 11/27 02:00 11/27 02:00
FS1 11/27 02:00 11/27 03:00 11/27 03:00
GAB   03/10 02:00  
GBU 11/27 02:00 11/27 02:00 11/27 02:00
GFC      
GH1   11/27 02:00  
GN1   06/14 08:00  
GOL      
GT1 11/27 02:00 11/27 02:00 11/27 02:00
HC1   11/27 02:00  
HI1 11/27 02:00 11/27 02:00 11/27 02:00
IA2 11/27 02:00 11/27 02:00  
IA3 11/01 07:00 11/27 02:00  
IL1 11/27 02:00 11/27 02:00  
JDA   11/27 02:00  
JOR 11/27 02:00 11/27 02:00  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   11/27 01:00  
KE1   11/27 02:00  
KM1 11/27 03:00 11/27 03:00  
KS1 11/27 02:00 11/27 02:00 11/27 02:00
KY1 11/07 14:00 11/27 02:00  
KY2 11/27 02:00 11/27 02:00 11/27 02:00
KYI   09/17 09:00  
KZ1   11/27 02:00  
LA1 11/27 02:00 11/27 02:00 02/01 00:00
LAO   11/27 02:00  
LC1      
LPS      
MA1 11/27 02:00 11/27 02:00  
MAD   11/27 02:00  
MD1 11/27 02:00 11/27 02:00 11/27 02:00
ME1 11/27 02:00 11/27 02:00 11/27 02:00
MEN 11/27 02:00 11/27 02:00 11/27 02:00
MEX   11/27 01:00  
MGN      
ML1   11/27 02:00  
MM1 11/27 02:00 11/27 02:00  
MMR   11/27 03:00  
MOE      
MON 11/27 02:00 11/27 02:00 11/27 02:00
MY1   11/27 02:00  
NC2 11/27 02:00 11/27 02:00 11/27 02:00
NCA 11/27 02:00 11/27 02:00 11/27 02:00
NE2 11/27 02:00 11/27 02:00 11/27 02:00
NEA   11/27 03:00  
NH1 11/27 02:00 11/27 02:00 11/27 02:00
NI1   11/27 00:00  
NI2   10/05 03:00  
NJ1 11/27 01:00 11/27 01:00  
NL1 11/27 02:00 11/27 02:00 11/27 02:00
NM2 11/27 02:00 11/27 02:00 11/27 02:00
NOS 11/27 02:00 11/27 02:00  
NPS 11/27 02:00 11/27 02:00  
NRB   12/31 18:26 12/31 18:26
NV3 11/27 02:00 11/27 02:00 11/27 02:00
OAP 11/27 02:00    
OAQ 11/25 08:00 11/25 08:00 11/25 08:00
OAR      
OCN      
OD1   06/06 13:00  
OH1 11/27 02:00 11/27 02:00 11/27 02:00
OK1 11/27 02:00 11/27 02:00 11/27 02:00
OR1 11/27 02:00 11/27 02:00  
OR2 10/06 11:00 11/27 02:00  
PA3 11/27 02:00 11/27 02:00  
PAR      
PIN      
PK1   11/27 02:00  
PK2   11/27 02:00  
PK3   11/22 07:00  
PK4   11/27 02:00  
QA1 11/27 02:00 11/27 02:00  
RI1 11/27 02:00 11/27 02:00  
RIY   12/30 04:00  
RT9      
RWA   11/27 03:00  
SC1 11/27 02:00 11/27 02:00 11/27 02:00
SCS      
SEN   11/27 03:00  
SFN 03/05 07:00    
SHA 11/27 02:00 11/27 02:00  
SIC      
SK1 08/01 05:00 08/01 05:00 08/21 16:00
SLO 11/27 02:00 11/27 02:00 11/27 02:00
SMA 02/04 05:00 02/04 05:00 08/07 09:00
SMJ 11/27 02:00   11/27 02:00
SMS      
SR1 11/27 02:00   11/27 02:00
SU1   11/27 02:00  
SY1   07/28 06:00  
THM 11/27 01:00 11/27 01:00  
TKM      
TN2 11/27 01:00 11/27 01:00 01/01 00:00
TN3 11/27 01:00 11/27 01:00 11/01 00:00
TNC      
TOG   10/04 16:00  
TPCD 11/27 02:00 11/27 02:00 11/27 02:00
TRP   11/27 02:00  
TSI      
TX1 11/27 02:00 11/27 02:00 11/27 02:00
UDA      
UGS      
UNR      
UTE 11/27 02:00 06/01 01:00  
UZB 11/23 16:00 11/27 02:00  
VG1   01/23 19:24  
VT1 11/27 02:00 11/27 02:00 11/27 02:00
WA1 11/27 02:00 11/27 02:00 11/27 02:00
WES      
WI1 11/27 02:00 11/27 02:00 11/27 02:00
WT1 11/27 02:00    
WV2 11/26 20:00 11/26 20:00  
YER   11/27 02:00