ID: 645

AQSQID: 380650002

Site Name: Hannover

Added: April 21, 2020, 6:24 p.m.

Updated: Oct. 16, 2021, 1:03 p.m.

Location: Stanton (N Dakota Hwy 31), ND

Reporting: True, Located: True

Current AQI: 25.0

Stanton (N Dakota Hwy 31) ND, US: 47.1858, -101.4281

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Oct. 16, 2021, 10 a.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 3.0 μg/m3 (13) 25.0
 
Oct. 16, 2021, 9 a.m. 0.8 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 2.9 μg/m3 (13) 26.0
 
Oct. 16, 2021, 8 a.m. 0.8 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 3.1 μg/m3 (13) 26.0
 
Oct. 16, 2021, 7 a.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A 3.5 μg/m3 (15) 25.0
 
Oct. 16, 2021, 6 a.m. 1.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 3.7 μg/m3 (16) 24.0
 
Oct. 16, 2021, 5 a.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A 3.6 μg/m3 (16) 25.0
 
Oct. 16, 2021, 4 a.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A 3.1 μg/m3 (13) 25.0
 
Oct. 16, 2021, 3 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 3.1 μg/m3 (13) 26.0
 
Oct. 16, 2021, 2 a.m. 1.6 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 3.1 μg/m3 (13) 30.0
 
Oct. 16, 2021, 1 a.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 3.2 μg/m3 (14) 31.0
 
Oct. 16, 2021, midnight 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 3.5 μg/m3 (15) 31.0
 
Oct. 15, 2021, 11 p.m. 1.6 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 3.6 μg/m3 (16) 32.0
 
Oct. 15, 2021, 10 p.m. 2.2 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 3.0 ppb (5) 37.0 ppb (35) N/A N/A 3.8 μg/m3 (16) 35.0
 
Oct. 15, 2021, 9 p.m. 2.1 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 37.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
Oct. 15, 2021, 8 p.m. 2.3 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 37.0 ppb (35) N/A N/A 4.2 μg/m3 (18) 35.0
 
Oct. 15, 2021, 7 p.m. 2.6 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 3.0 ppb (5) 35.0 ppb (33) N/A N/A 6.1 μg/m3 (26) 33.0
 
Oct. 15, 2021, 6 p.m. 3.3 ppb (4) 1.1 ppb (2) N/A 2.0 ppb (2) N/A 3.0 ppb (5) 32.0 ppb (30) N/A N/A 7.3 μg/m3 (31) 31.0
 
Oct. 15, 2021, 5 p.m. 2.4 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 30.0 ppb (28) N/A N/A 6.8 μg/m3 (29) 29.0
 
Oct. 15, 2021, 4 p.m. 3.4 ppb (4) 1.4 ppb (2) N/A 2.0 ppb (2) N/A 3.0 ppb (5) 25.0 ppb (24) N/A N/A 7.1 μg/m3 (30) 30.0
 
Oct. 15, 2021, 3 p.m. 3.3 ppb (4) 1.3 ppb (2) N/A 2.0 ppb (2) N/A 3.0 ppb (5) 21.0 ppb (20) N/A N/A 7.1 μg/m3 (30) 30.0
 
Oct. 15, 2021, 2 p.m. 2.5 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 19.0 ppb (18) N/A N/A 6.9 μg/m3 (29) 29.0
 
Oct. 15, 2021, 1 p.m. 1.8 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 6.4 μg/m3 (27) 27.0
 
Oct. 15, 2021, noon 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 5.6 μg/m3 (24) 24.0
 
Oct. 15, 2021, 11 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 19.0 ppb (18) N/A N/A 4.8 μg/m3 (20) 20.0
 
Oct. 15, 2021, 10 a.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 21.0 ppb (20) N/A N/A 4.5 μg/m3 (19) 20.0
 
Oct. 15, 2021, 9 a.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 22.0 ppb (21) N/A N/A 5.1 μg/m3 (22) 22.0
 
Oct. 15, 2021, 8 a.m. 1.9 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 23.0 ppb (22) N/A N/A 5.5 μg/m3 (23) 23.0
 
Oct. 15, 2021, 7 a.m. 1.9 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 23.0 ppb (22) N/A N/A 5.5 μg/m3 (23) 23.0
 
Oct. 15, 2021, 6 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 6.0 μg/m3 (25) 25.0
 
Oct. 15, 2021, 5 a.m. 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 22.0 ppb (21) N/A N/A 8.1 μg/m3 (34) 34.0
 
Oct. 15, 2021, 4 a.m. 1.9 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 21.0 ppb (20) N/A N/A 10.7 μg/m3 (45) 45.0
 
Oct. 15, 2021, 3 a.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 21.0 ppb (20) N/A N/A 11.0 μg/m3 (46) 46.0
 
Oct. 15, 2021, 2 a.m. 1.8 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 22.0 ppb (21) N/A N/A 9.5 μg/m3 (40) 40.0
 
Oct. 15, 2021, 1 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 5.6 μg/m3 (24) 24.0
 
Oct. 15, 2021, midnight 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A 2.6 μg/m3 (11) 25.0
 
Oct. 14, 2021, 11 p.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 3.0 μg/m3 (13) 26.0
 
Oct. 14, 2021, 10 p.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 3.8 μg/m3 (16) 28.0
 
Oct. 14, 2021, 9 p.m. 0.9 ppb (1) 0.5 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 4.1 μg/m3 (18) 30.0
 
Oct. 14, 2021, 8 p.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 4.2 μg/m3 (18) 30.0
 
Oct. 14, 2021, 7 p.m. 3.1 ppb (3) 1.3 ppb (2) N/A 2.0 ppb (2) N/A 3.0 ppb (5) 30.0 ppb (28) N/A N/A 4.7 μg/m3 (20) 28.0
 
Oct. 14, 2021, 6 p.m. 1.7 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 33.0 ppb (31) N/A N/A 3.6 μg/m3 (16) 31.0
 
Oct. 14, 2021, 5 p.m. 1.2 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 3.2 μg/m3 (14) 30.0
 
Oct. 14, 2021, 4 p.m. 1.1 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 3.8 μg/m3 (16) 27.0
 
Oct. 14, 2021, 3 p.m. 1.1 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 4.5 μg/m3 (19) 24.0
 
Oct. 14, 2021, 2 p.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 21.0 ppb (20) N/A N/A 6.6 μg/m3 (28) 28.0
 
Oct. 14, 2021, 1 p.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 17.0 ppb (16) N/A N/A 9.3 μg/m3 (39) 39.0
 
Oct. 14, 2021, noon 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 14.0 ppb (13) N/A N/A 8.4 μg/m3 (36) 36.0
 
Oct. 14, 2021, 11 a.m. 1.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 14.0 ppb (13) N/A N/A 4.1 μg/m3 (18) 18.0
 
Oct. 14, 2021, 10 a.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 14.0 ppb (13) N/A N/A 4.3 μg/m3 (18) 18.0
 
Oct. 14, 2021, 9 a.m. 1.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 14.0 ppb (13) N/A N/A 5.5 μg/m3 (23) 23.0
 
Oct. 14, 2021, 8 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 14.0 ppb (13) N/A N/A 3.7 μg/m3 (16) 16.0
 
Oct. 14, 2021, 7 a.m. 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 14.0 ppb (13) N/A N/A 3.5 μg/m3 (15) 15.0
 
Oct. 14, 2021, 6 a.m. 1.8 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 9.1 μg/m3 (38) 38.0
 
Oct. 14, 2021, 5 a.m. 3.1 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 11.0 ppb (11) N/A N/A 16.9 μg/m3 (62) 62.0
 
Oct. 14, 2021, 4 a.m. 3.0 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 11.0 ppb (11) N/A N/A 11.9 μg/m3 (50) 50.0
 
Oct. 14, 2021, 3 a.m. 2.2 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 6.9 μg/m3 (29) 29.0
 
Oct. 14, 2021, 2 a.m. 1.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 6.0 μg/m3 (25) 25.0
 
Oct. 14, 2021, 1 a.m. 0.8 ppb (1) 0.3 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 4.2 μg/m3 (18) 18.0
 
Oct. 14, 2021, midnight 0.8 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 17.0 ppb (16) N/A N/A 3.5 μg/m3 (15) 16.0
 
Oct. 13, 2021, 11 p.m. 0.9 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 2.8 μg/m3 (12) 15.0
 
Oct. 13, 2021, 10 p.m. 0.9 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 17.0 ppb (16) N/A N/A 3.0 μg/m3 (13) 16.0
 
Oct. 13, 2021, 9 p.m. 0.9 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 19.0 ppb (18) N/A N/A 2.2 μg/m3 (10) 18.0
 
Oct. 13, 2021, 8 p.m. 0.8 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 19.0 ppb (18) N/A N/A 1.8 μg/m3 (8) 18.0
 
Oct. 13, 2021, 7 p.m. 0.8 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 1.7 μg/m3 (8) 17.0
 
Oct. 13, 2021, 6 p.m. 0.8 ppb (1) 0.5 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 17.0 ppb (16) N/A N/A 1.8 μg/m3 (8) 16.0
 
Oct. 13, 2021, 5 p.m. 0.7 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 1.4 μg/m3 (6) 15.0
 
Oct. 13, 2021, 4 p.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 1.3 μg/m3 (6) 15.0
 
Oct. 13, 2021, 3 p.m. 1.9 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 15.0 ppb (14) N/A N/A 1.6 μg/m3 (7) 14.0
 
Oct. 13, 2021, 2 p.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 15.0 ppb (14) N/A N/A 2.5 μg/m3 (11) 14.0
 
Oct. 13, 2021, 1 p.m. 1.9 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 15.0 ppb (14) N/A N/A 3.0 μg/m3 (13) 14.0
 
Oct. 13, 2021, noon 1.9 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 15.0 ppb (14) N/A N/A 4.1 μg/m3 (18) 18.0
 
Oct. 13, 2021, 11 a.m. 1.4 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 6.3 μg/m3 (27) 27.0
 
Oct. 13, 2021, 10 a.m. 1.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 17.0 ppb (16) N/A N/A 5.2 μg/m3 (22) 22.0
 
Oct. 13, 2021, 9 a.m. 1.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 4.2 μg/m3 (18) 18.0
 
Oct. 13, 2021, 8 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 19.0 ppb (18) N/A N/A 3.7 μg/m3 (16) 18.0
 
Oct. 13, 2021, 7 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 20.0 ppb (19) N/A N/A 3.8 μg/m3 (16) 19.0
 
Oct. 13, 2021, 6 a.m. 1.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 19.0 ppb (18) N/A N/A 4.1 μg/m3 (18) 18.0
 
Oct. 13, 2021, 5 a.m. 1.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 20.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
Oct. 13, 2021, 4 a.m. 1.6 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 21.0 ppb (20) N/A N/A 4.5 μg/m3 (19) 20.0
 
Oct. 13, 2021, 3 a.m. 2.4 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 21.0 ppb (20) N/A N/A 5.4 μg/m3 (23) 23.0
 
Oct. 13, 2021, 2 a.m. 2.4 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 7.5 μg/m3 (32) 32.0
 
Oct. 13, 2021, 1 a.m. 2.9 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 24.0 ppb (23) N/A N/A 10.2 μg/m3 (43) 43.0
 
Oct. 13, 2021, midnight 1.3 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 6.9 μg/m3 (29) 29.0
 
Oct. 12, 2021, 11 p.m. 2.0 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 24.0 ppb (23) N/A N/A 3.1 μg/m3 (13) 23.0
 
Oct. 12, 2021, 10 p.m. 3.3 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 3.0 ppb (5) 24.0 ppb (23) N/A N/A 3.0 μg/m3 (13) 23.0
 
Oct. 12, 2021, 9 p.m. 4.3 ppb (5) 1.3 ppb (2) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 24.0 ppb (23) N/A N/A 3.2 μg/m3 (14) 23.0
 
Oct. 12, 2021, 8 p.m. 3.6 ppb (4) 1.3 ppb (2) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 26.0 ppb (25) N/A N/A 3.0 μg/m3 (13) 25.0
 
Oct. 12, 2021, 7 p.m. 3.8 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 26.0 ppb (25) N/A N/A 2.6 μg/m3 (11) 25.0
 
Oct. 12, 2021, 6 p.m. 3.2 ppb (4) 1.5 ppb (2) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 24.0 ppb (23) N/A N/A 2.0 μg/m3 (9) 23.0
 
Oct. 12, 2021, 5 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) N/A N/A N/A 1.4 μg/m3 (6) 6.0
 
Oct. 12, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Oct. 12, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 1.7 μg/m3 (8) 23.0
 
Oct. 12, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 2.1 μg/m3 (9) 22.0
 
Oct. 12, 2021, 1 p.m. 2.2 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 22.0 ppb (21) N/A N/A 2.6 μg/m3 (11) 21.0
 
Oct. 12, 2021, noon 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 2.6 μg/m3 (11) 23.0
 
Oct. 12, 2021, 11 a.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 2.9 μg/m3 (13) 24.0
 
Oct. 12, 2021, 10 a.m. 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 3.4 μg/m3 (15) 22.0
 
Oct. 12, 2021, 9 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 24.0 ppb (23) N/A N/A 3.5 μg/m3 (15) 23.0
 
Oct. 12, 2021, 8 a.m. 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 26.0 ppb (25) N/A N/A 3.7 μg/m3 (16) 25.0
 
Oct. 12, 2021, 7 a.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 27.0 ppb (25) N/A N/A 3.8 μg/m3 (16) 25.0
 
Oct. 12, 2021, 6 a.m. 1.8 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 26.0 ppb (25) N/A N/A 4.4 μg/m3 (19) 25.0
 
Oct. 12, 2021, 5 a.m. 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 28.0 ppb (26) N/A N/A 4.2 μg/m3 (18) 26.0
 
Oct. 12, 2021, 4 a.m. 1.8 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 28.0 ppb (26) N/A N/A 3.7 μg/m3 (16) 26.0
 
Oct. 12, 2021, 3 a.m. 2.2 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 3.0 ppb (5) 27.0 ppb (25) N/A N/A 3.8 μg/m3 (16) 25.0
 
Oct. 12, 2021, 2 a.m. 2.3 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 27.0 ppb (25) N/A N/A 4.4 μg/m3 (19) 25.0
 
Oct. 12, 2021, 1 a.m. 2.4 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 4.9 μg/m3 (21) 27.0
 
Oct. 12, 2021, midnight 2.5 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 4.8 μg/m3 (20) 29.0
 
Oct. 11, 2021, 11 p.m. 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 4.1 μg/m3 (18) 35.0
 
Oct. 11, 2021, 10 p.m. 1.6 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 4.2 μg/m3 (18) 38.0
 
Oct. 11, 2021, 9 p.m. 1.8 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 41.0 ppb (38) N/A N/A 4.4 μg/m3 (19) 38.0
 
Oct. 11, 2021, 8 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 3.7 μg/m3 (16) 38.0
 
Oct. 11, 2021, 7 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 3.5 μg/m3 (15) 36.0
 
Oct. 11, 2021, 6 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 3.1 μg/m3 (13) 35.0
 
Oct. 11, 2021, 5 p.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 3.2 μg/m3 (14) 31.0
 
Oct. 11, 2021, 4 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 3.6 μg/m3 (16) 28.0
 
Oct. 11, 2021, 3 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
Oct. 11, 2021, 2 p.m. 2.2 ppb (3) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 4.5 μg/m3 (19) 26.0
 
Oct. 11, 2021, 1 p.m. 2.9 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
Oct. 11, 2021, noon 2.6 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
Oct. 11, 2021, 11 a.m. 2.5 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 4.6 μg/m3 (20) 24.0
 
Oct. 11, 2021, 10 a.m. 3.2 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 22.0 ppb (21) N/A N/A 4.5 μg/m3 (19) 21.0
 
Oct. 11, 2021, 9 a.m. 2.8 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 23.0 ppb (22) N/A N/A 4.3 μg/m3 (18) 22.0
 
Oct. 11, 2021, 8 a.m. 2.7 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 3.0 ppb (5) 24.0 ppb (23) N/A N/A 4.2 μg/m3 (18) 23.0
 
Oct. 11, 2021, 7 a.m. 2.3 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 24.0 ppb (23) N/A N/A 4.2 μg/m3 (18) 23.0
 
Oct. 11, 2021, 6 a.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 4.3 μg/m3 (18) 25.0
 
Oct. 11, 2021, 5 a.m. 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 30.0 ppb (28) N/A N/A 4.4 μg/m3 (19) 28.0
 
Oct. 11, 2021, 4 a.m. 2.2 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 32.0 ppb (30) N/A N/A 4.8 μg/m3 (20) 30.0
 
Oct. 11, 2021, 3 a.m. 1.8 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 5.1 μg/m3 (22) 29.0
 
Oct. 11, 2021, 2 a.m. 1.9 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 4.9 μg/m3 (21) 32.0
 
Oct. 11, 2021, 1 a.m. 2.1 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 5.9 μg/m3 (25) 34.0
 
Oct. 11, 2021, midnight 2.2 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 6.8 μg/m3 (29) 35.0
 
Oct. 10, 2021, 11 p.m. 2.6 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 38.0 ppb (36) N/A N/A 8.5 μg/m3 (36) 36.0
 
Oct. 10, 2021, 10 p.m. 2.9 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 4.0 ppb (6) 41.0 ppb (38) N/A N/A 11.6 μg/m3 (49) 49.0
 
Oct. 10, 2021, 9 p.m. 2.8 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 4.0 ppb (6) 45.0 ppb (42) N/A N/A 16.1 μg/m3 (60) 60.0
 
Oct. 10, 2021, 8 p.m. 3.3 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 4.0 ppb (6) 46.0 ppb (43) N/A N/A 16.1 μg/m3 (60) 60.0
 
Oct. 10, 2021, 7 p.m. 2.4 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 45.0 ppb (42) N/A N/A 19.0 μg/m3 (66) 66.0
 
Oct. 10, 2021, 6 p.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 43.0 ppb (40) N/A N/A 16.9 μg/m3 (62) 62.0
 
Oct. 10, 2021, 5 p.m. 3.6 ppb (4) 1.1 ppb (2) N/A 3.0 ppb (3) N/A 3.0 ppb (5) 38.0 ppb (36) N/A N/A 21.4 μg/m3 (71) 71.0
 
Oct. 10, 2021, 4 p.m. 4.5 ppb (5) 1.2 ppb (2) N/A 3.0 ppb (3) N/A 3.0 ppb (5) 32.0 ppb (30) N/A N/A 16.2 μg/m3 (60) 60.0
 
Oct. 10, 2021, 3 p.m. 4.0 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 29.0 ppb (27) N/A N/A 15.0 μg/m3 (58) 58.0
 
Oct. 10, 2021, 2 p.m. 3.0 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 19.4 μg/m3 (67) 67.0
 
Oct. 10, 2021, 1 p.m. 2.2 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 22.9 μg/m3 (74) 74.0
 
Oct. 10, 2021, noon 2.0 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 21.4 μg/m3 (71) 71.0
 
Oct. 10, 2021, 11 a.m. 1.6 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 19.4 μg/m3 (67) 67.0
 
Oct. 10, 2021, 10 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 18.2 μg/m3 (64) 64.0
 
Oct. 10, 2021, 9 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 10.9 μg/m3 (46) 46.0
 
Oct. 10, 2021, 8 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 9.3 μg/m3 (39) 39.0
 
Oct. 10, 2021, 7 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 11.6 μg/m3 (49) 49.0
 
Oct. 10, 2021, 6 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 22.0 ppb (21) N/A N/A 12.0 μg/m3 (50) 50.0
 
Oct. 10, 2021, 5 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 10.0 μg/m3 (42) 42.0
 
Oct. 10, 2021, 4 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 7.7 μg/m3 (33) 33.0
 
Oct. 10, 2021, 3 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 6.4 μg/m3 (27) 28.0
 
Oct. 10, 2021, 2 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 8.3 μg/m3 (35) 35.0
 
Oct. 10, 2021, 1 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 5.8 μg/m3 (25) 25.0
 
Oct. 10, 2021, midnight 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 5.4 μg/m3 (23) 23.0
 
Oct. 9, 2021, 11 p.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 20.0 ppb (19) N/A N/A 6.2 μg/m3 (26) 26.0
 
Oct. 9, 2021, 10 p.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 14.0 ppb (13) N/A N/A 6.9 μg/m3 (29) 29.0
 
Oct. 9, 2021, 9 p.m. 2.2 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 12.0 ppb (12) N/A N/A 7.8 μg/m3 (33) 33.0
 
Oct. 9, 2021, 8 p.m. 2.0 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 5.9 μg/m3 (25) 25.0
 
Oct. 9, 2021, 7 p.m. 4.5 ppb (5) 1.5 ppb (2) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 12.0 ppb (12) N/A N/A 8.7 μg/m3 (37) 37.0
 
Oct. 9, 2021, 6 p.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 14.0 ppb (13) N/A N/A 6.0 μg/m3 (25) 25.0
 
Oct. 9, 2021, 5 p.m. 1.8 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 12.0 ppb (12) N/A N/A 6.5 μg/m3 (28) 28.0
 
Oct. 9, 2021, 4 p.m. 1.8 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 6.4 μg/m3 (27) 27.0
 
Oct. 9, 2021, 3 p.m. 1.9 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 8.0 μg/m3 (34) 34.0
 
Oct. 9, 2021, 2 p.m. 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 8.7 μg/m3 (37) 37.0
 
Oct. 9, 2021, 1 p.m. 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 15.2 μg/m3 (58) 58.0
 
Oct. 9, 2021, noon 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 10.7 μg/m3 (45) 45.0
 
Oct. 9, 2021, 11 a.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 30.5 μg/m3 (90) 90.0