ID: 645

AQSQID: 380650002

Site Name: Hannover

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

Updated: Jan. 24, 2022, 9:34 a.m.

Location: Stanton (N Dakota Hwy 31), ND

Reporting: True, Located: True

Current AQI: 33.0

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
Jan. 24, 2022, 7 a.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 5.6 μg/m3 (24) 33.0
 
Jan. 24, 2022, 6 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 6.2 μg/m3 (26) 33.0
 
Jan. 24, 2022, 5 a.m. 1.3 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 4.3 μg/m3 (18) 35.0
 
Jan. 24, 2022, 4 a.m. 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 3.0 μg/m3 (13) 36.0
 
Jan. 24, 2022, 3 a.m. 2.2 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 5.4 μg/m3 (23) 35.0
 
Jan. 24, 2022, 2 a.m. 2.9 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 8.3 μg/m3 (35) 35.0
 
Jan. 24, 2022, 1 a.m. 1.9 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 2.9 μg/m3 (13) 35.0
 
Jan. 24, 2022, midnight 1.6 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 39.0 ppb (37) N/A N/A 2.2 μg/m3 (10) 37.0
 
Jan. 23, 2022, 11 p.m. 1.8 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 36.0 ppb (34) N/A N/A 2.3 μg/m3 (10) 34.0
 
Jan. 23, 2022, 10 p.m. 1.8 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 2.2 μg/m3 (10) 32.0
 
Jan. 23, 2022, 9 p.m. 2.0 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 2.3 μg/m3 (10) 31.0
 
Jan. 23, 2022, 8 p.m. 2.6 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 34.0 ppb (32) N/A N/A 2.2 μg/m3 (10) 32.0
 
Jan. 23, 2022, 7 p.m. 5.4 ppb (6) 2.3 ppb (3) N/A 3.0 ppb (3) N/A 6.0 ppb (9) 30.0 ppb (28) N/A N/A 2.3 μg/m3 (10) 28.0
 
Jan. 23, 2022, 6 p.m. 4.0 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A 4.0 ppb (6) 29.0 ppb (27) N/A N/A 3.5 μg/m3 (15) 27.0
 
Jan. 23, 2022, 5 p.m. 3.3 ppb (4) 1.2 ppb (2) N/A 2.0 ppb (2) N/A 3.0 ppb (5) 28.0 ppb (26) N/A N/A 5.9 μg/m3 (25) 26.0
 
Jan. 23, 2022, 4 p.m. 2.3 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 10.7 μg/m3 (45) 45.0
 
Jan. 23, 2022, 3 p.m. 2.1 ppb (2) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 11.3 μg/m3 (48) 48.0
 
Jan. 23, 2022, 2 p.m. 1.9 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 8.7 μg/m3 (37) 37.0
 
Jan. 23, 2022, 1 p.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 7.9 μg/m3 (33) 33.0
 
Jan. 23, 2022, noon 3.5 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 30.0 ppb (28) N/A N/A 7.4 μg/m3 (31) 31.0
 
Jan. 23, 2022, 11 a.m. 5.5 ppb (6) 0.3 ppb (1) N/A 5.0 ppb (5) N/A 3.0 ppb (5) 29.0 ppb (27) N/A N/A 7.3 μg/m3 (31) 31.0
 
Jan. 23, 2022, 10 a.m. 1.8 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 35.0 ppb (33) N/A N/A 5.6 μg/m3 (24) 33.0
 
Jan. 23, 2022, 9 a.m. 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 36.0 ppb (34) N/A N/A 4.8 μg/m3 (20) 34.0
 
Jan. 23, 2022, 8 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 4.5 μg/m3 (19) 34.0
 
Jan. 23, 2022, 7 a.m. 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 4.2 μg/m3 (18) 34.0
 
Jan. 23, 2022, 6 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 3.9 μg/m3 (17) 34.0
 
Jan. 23, 2022, 5 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 4.2 μg/m3 (18) 33.0
 
Jan. 23, 2022, 4 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 4.3 μg/m3 (18) 33.0
 
Jan. 23, 2022, 3 a.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 36.0 ppb (34) N/A N/A 4.2 μg/m3 (18) 34.0
 
Jan. 23, 2022, 2 a.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 36.0 ppb (34) N/A N/A 4.2 μg/m3 (18) 34.0
 
Jan. 23, 2022, 1 a.m. 2.3 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 36.0 ppb (34) N/A N/A 5.8 μg/m3 (25) 34.0
 
Jan. 23, 2022, midnight 2.9 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 35.0 ppb (33) N/A N/A 8.6 μg/m3 (36) 36.0
 
Jan. 22, 2022, 11 p.m. 3.4 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 33.0 ppb (31) N/A N/A 8.6 μg/m3 (36) 36.0
 
Jan. 22, 2022, 10 p.m. 2.4 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 7.2 μg/m3 (31) 33.0
 
Jan. 22, 2022, 9 p.m. 2.3 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 6.9 μg/m3 (29) 32.0
 
Jan. 22, 2022, 8 p.m. 2.4 ppb (3) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 30.0 ppb (28) N/A N/A 4.7 μg/m3 (20) 28.0
 
Jan. 22, 2022, 7 p.m. 2.2 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 29.0 ppb (27) N/A N/A 3.7 μg/m3 (16) 27.0
 
Jan. 22, 2022, 6 p.m. 1.8 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 5.7 μg/m3 (24) 29.0
 
Jan. 22, 2022, 5 p.m. 1.6 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 5.9 μg/m3 (25) 30.0
 
Jan. 22, 2022, 4 p.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 5.4 μg/m3 (23) 32.0
 
Jan. 22, 2022, 3 p.m. 1.3 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 4.5 μg/m3 (19) 33.0
 
Jan. 22, 2022, 2 p.m. 1.7 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 3.8 μg/m3 (16) 35.0
 
Jan. 22, 2022, 1 p.m. 1.3 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 3.9 μg/m3 (17) 35.0
 
Jan. 22, 2022, noon 2.0 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 35.0 ppb (33) N/A N/A 4.6 μg/m3 (20) 33.0
 
Jan. 22, 2022, 11 a.m. 2.5 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 34.0 ppb (32) N/A N/A 6.2 μg/m3 (26) 32.0
 
Jan. 22, 2022, 10 a.m. 2.0 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 5.6 μg/m3 (24) 33.0
 
Jan. 22, 2022, 9 a.m. 2.2 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 5.9 μg/m3 (25) 32.0
 
Jan. 22, 2022, 8 a.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 5.7 μg/m3 (24) 32.0
 
Jan. 22, 2022, 7 a.m. 1.6 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 5.4 μg/m3 (23) 33.0
 
Jan. 22, 2022, 6 a.m. 1.6 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 5.2 μg/m3 (22) 33.0
 
Jan. 22, 2022, 5 a.m. 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
Jan. 22, 2022, 4 a.m. 1.5 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 4.8 μg/m3 (20) 35.0
 
Jan. 22, 2022, 3 a.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 4.2 μg/m3 (18) 36.0
 
Jan. 22, 2022, 2 a.m. 0.9 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 3.8 μg/m3 (16) 38.0
 
Jan. 22, 2022, 1 a.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 41.0 ppb (38) N/A N/A 2.8 μg/m3 (12) 38.0
 
Jan. 22, 2022, midnight 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 41.0 ppb (38) N/A N/A 2.4 μg/m3 (10) 38.0
 
Jan. 21, 2022, 11 p.m. 1.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 2.4 μg/m3 (10) 38.0
 
Jan. 21, 2022, 10 p.m. 1.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 41.0 ppb (38) N/A N/A 2.5 μg/m3 (11) 38.0
 
Jan. 21, 2022, 9 p.m. 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 2.0 μg/m3 (9) 38.0
 
Jan. 21, 2022, 8 p.m. 1.4 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 39.0 ppb (37) N/A N/A 1.8 μg/m3 (8) 37.0
 
Jan. 21, 2022, 7 p.m. 2.0 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 2.0 μg/m3 (9) 34.0
 
Jan. 21, 2022, 6 p.m. 2.6 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 33.0 ppb (31) N/A N/A 3.7 μg/m3 (16) 31.0
 
Jan. 21, 2022, 5 p.m. 2.1 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 4.5 μg/m3 (19) 30.0
 
Jan. 21, 2022, 4 p.m. 2.3 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 5.6 μg/m3 (24) 27.0
 
Jan. 21, 2022, 3 p.m. 2.3 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 5.7 μg/m3 (24) 27.0
 
Jan. 21, 2022, 2 p.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 5.8 μg/m3 (25) 26.0
 
Jan. 21, 2022, 1 p.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 26.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
Jan. 21, 2022, noon 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 5.1 μg/m3 (22) 24.0
 
Jan. 21, 2022, 11 a.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 5.9 μg/m3 (25) 25.0
 
Jan. 21, 2022, 10 a.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 6.3 μg/m3 (27) 27.0
 
Jan. 21, 2022, 9 a.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 6.1 μg/m3 (26) 26.0
 
Jan. 21, 2022, 8 a.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A 5.6 μg/m3 (24) 25.0
 
Jan. 21, 2022, 7 a.m. 1.2 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 5.0 μg/m3 (21) 25.0
 
Jan. 21, 2022, 6 a.m. 1.0 ppb (1) 0.3 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
 
Jan. 21, 2022, 5 a.m. 0.8 ppb (1) 0.3 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 4.1 μg/m3 (18) 27.0
 
Jan. 21, 2022, 4 a.m. 0.8 ppb (1) 0.3 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 3.7 μg/m3 (16) 28.0
 
Jan. 21, 2022, 3 a.m. 0.8 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 3.6 μg/m3 (16) 28.0
 
Jan. 21, 2022, 2 a.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 3.5 μg/m3 (15) 29.0
 
Jan. 21, 2022, 1 a.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 3.6 μg/m3 (16) 29.0
 
Jan. 21, 2022, midnight 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 3.5 μg/m3 (15) 30.0
 
Jan. 20, 2022, 11 p.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 3.2 μg/m3 (14) 32.0
 
Jan. 20, 2022, 10 p.m. 1.2 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 3.2 μg/m3 (14) 33.0
 
Jan. 20, 2022, 9 p.m. 1.4 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 3.1 μg/m3 (13) 33.0
 
Jan. 20, 2022, 8 p.m. 1.1 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 3.2 μg/m3 (14) 32.0
 
Jan. 20, 2022, 7 p.m. 1.1 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 3.3 μg/m3 (14) 32.0
 
Jan. 20, 2022, 6 p.m. 1.2 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 3.3 μg/m3 (14) 31.0
 
Jan. 20, 2022, 5 p.m. 1.8 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 3.7 μg/m3 (16) 29.0
 
Jan. 20, 2022, 4 p.m. 2.6 ppb (3) 1.4 ppb (2) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 4.2 μg/m3 (18) 26.0
 
Jan. 20, 2022, 3 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 4.2 μg/m3 (18) 26.0
 
Jan. 20, 2022, 2 p.m. 1.9 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 4.2 μg/m3 (18) 26.0
 
Jan. 20, 2022, 1 p.m. 2.5 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
Jan. 20, 2022, noon 2.2 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 29.0 ppb (27) N/A N/A 5.2 μg/m3 (22) 27.0
 
Jan. 20, 2022, 11 a.m. 1.8 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 32.0 ppb (30) N/A N/A 4.3 μg/m3 (18) 30.0
 
Jan. 20, 2022, 10 a.m. 2.6 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 30.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
Jan. 20, 2022, 9 a.m. 2.7 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 6.3 μg/m3 (27) 29.0
 
Jan. 20, 2022, 8 a.m. 2.8 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 33.0 ppb (31) N/A N/A 5.1 μg/m3 (22) 31.0
 
Jan. 20, 2022, 7 a.m. 3.3 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 7.4 μg/m3 (31) 31.0
 
Jan. 20, 2022, 6 a.m. 3.2 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 32.0 ppb (30) N/A N/A 5.8 μg/m3 (25) 30.0
 
Jan. 20, 2022, 5 a.m. 3.3 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 4.7 μg/m3 (20) 30.0
 
Jan. 20, 2022, 4 a.m. 3.2 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 4.6 μg/m3 (20) 31.0
 
Jan. 20, 2022, 3 a.m. 3.1 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 4.8 μg/m3 (20) 31.0
 
Jan. 20, 2022, 2 a.m. 3.5 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 4.5 μg/m3 (19) 31.0
 
Jan. 20, 2022, 1 a.m. 2.7 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 4.1 μg/m3 (18) 32.0
 
Jan. 20, 2022, midnight 2.8 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 3.9 μg/m3 (17) 32.0
 
Jan. 19, 2022, 11 p.m. 2.7 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 3.8 μg/m3 (16) 33.0
 
Jan. 19, 2022, 10 p.m. 2.9 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 4.5 μg/m3 (19) 34.0
 
Jan. 19, 2022, 9 p.m. 4.9 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 35.0 ppb (33) N/A N/A 11.5 μg/m3 (48) 48.0
 
Jan. 19, 2022, 8 p.m. 4.3 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 3.0 ppb (5) 35.0 ppb (33) N/A N/A 8.6 μg/m3 (36) 36.0
 
Jan. 19, 2022, 7 p.m. 2.3 ppb (3) 1.2 ppb (2) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
Jan. 19, 2022, 6 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 33.0
 
Jan. 19, 2022, 5 p.m. 2.1 ppb (2) 1.1 ppb (2) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
Jan. 19, 2022, 4 p.m. 2.4 ppb (3) 1.1 ppb (2) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
Jan. 19, 2022, 3 p.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 6.5 μg/m3 (28) 29.0
 
Jan. 19, 2022, 2 p.m. 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 4.7 μg/m3 (20) 29.0
 
Jan. 19, 2022, 1 p.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 4.1 μg/m3 (18) 32.0
 
Jan. 19, 2022, noon 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 4.1 μg/m3 (18) 32.0
 
Jan. 19, 2022, 11 a.m. 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 3.9 μg/m3 (17) 33.0
 
Jan. 19, 2022, 10 a.m. 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 33.0
 
Jan. 19, 2022, 9 a.m. 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 4.1 μg/m3 (18) 33.0
 
Jan. 19, 2022, 8 a.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 4.2 μg/m3 (18) 33.0
 
Jan. 19, 2022, 7 a.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 4.2 μg/m3 (18) 34.0
 
Jan. 19, 2022, 6 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 4.4 μg/m3 (19) 33.0
 
Jan. 19, 2022, 5 a.m. 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 4.6 μg/m3 (20) 33.0
 
Jan. 19, 2022, 4 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 4.2 μg/m3 (18) 34.0
 
Jan. 19, 2022, 3 a.m. 1.2 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
 
Jan. 19, 2022, 2 a.m. 1.3 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 4.5 μg/m3 (19) 35.0
 
Jan. 19, 2022, 1 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 5.3 μg/m3 (23) 33.0
 
Jan. 19, 2022, midnight 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 5.3 μg/m3 (23) 33.0
 
Jan. 18, 2022, 11 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 5.6 μg/m3 (24) 33.0
 
Jan. 18, 2022, 10 p.m. 1.3 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 5.7 μg/m3 (24) 32.0
 
Jan. 18, 2022, 9 p.m. 1.2 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 5.8 μg/m3 (25) 33.0
 
Jan. 18, 2022, 8 p.m. 1.5 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 6.6 μg/m3 (28) 32.0
 
Jan. 18, 2022, 7 p.m. 1.6 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 18, 2022, 6 p.m. 1.4 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) N/A N/A N/A 6.6 μg/m3 (28) 28.0
 
Jan. 18, 2022, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A N/A 2.0
 
Jan. 18, 2022, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A N/A 2.0
 
Jan. 18, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 13.4 μg/m3 (54) 54.0
 
Jan. 18, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 21.6 μg/m3 (71) 71.0
 
Jan. 18, 2022, 1 p.m. 1.9 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 5.2 μg/m3 (22) 28.0
 
Jan. 18, 2022, noon 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 1.6 μg/m3 (7) 33.0
 
Jan. 18, 2022, 11 a.m. 3.0 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 3.0 ppb (5) 34.0 ppb (32) N/A N/A 1.3 μg/m3 (6) 32.0
 
Jan. 18, 2022, 10 a.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 34.0 ppb (32) N/A N/A 1.3 μg/m3 (6) 32.0
 
Jan. 18, 2022, 9 a.m. 1.1 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 1.4 μg/m3 (6) 31.0
 
Jan. 18, 2022, 8 a.m. 1.4 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 1.3 μg/m3 (6) 31.0
 
Jan. 18, 2022, 7 a.m. 1.4 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 1.4 μg/m3 (6) 30.0
 
Jan. 18, 2022, 6 a.m. 1.5 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 1.7 μg/m3 (8) 28.0
 
Jan. 18, 2022, 5 a.m. 1.8 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 2.5 μg/m3 (11) 25.0
 
Jan. 18, 2022, 4 a.m. 2.8 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 22.0 ppb (21) N/A N/A 4.0 μg/m3 (17) 21.0
 
Jan. 18, 2022, 3 a.m. 2.7 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 4.7 μg/m3 (20) 22.0
 
Jan. 18, 2022, 2 a.m. 2.9 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 4.6 μg/m3 (20) 22.0
 
Jan. 18, 2022, 1 a.m. 11.9 ppb (12) 1.3 ppb (2) N/A 11.0 ppb (11) N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 18, 2022, midnight 11.2 ppb (11) 1.1 ppb (2) N/A 10.0 ppb (10) N/A 2.0 ppb (3) 17.0 ppb (16) N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 17, 2022, 11 p.m. 4.5 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 25.0 ppb (24) N/A N/A 4.8 μg/m3 (20) 24.0
 
Jan. 17, 2022, 10 p.m. 3.2 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 26.0 ppb (25) N/A N/A 4.7 μg/m3 (20) 25.0
 
Jan. 17, 2022, 9 p.m. 2.8 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 4.5 μg/m3 (19) 25.0
 
Jan. 17, 2022, 8 p.m. 3.6 ppb (4) 1.5 ppb (2) 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
 
Jan. 17, 2022, 7 p.m. 2.5 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 3.5 μg/m3 (15) 25.0
 
Jan. 17, 2022, 6 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A 3.4 μg/m3 (15) 25.0
 
Jan. 17, 2022, 5 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A 3.2 μg/m3 (14) 25.0
 
Jan. 17, 2022, 4 p.m. 2.6 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 3.5 μg/m3 (15) 23.0
 
Jan. 17, 2022, 3 p.m. 5.3 ppb (5) 1.4 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 4.2 μg/m3 (18) 22.0
 
Jan. 17, 2022, 2 p.m. 6.3 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 21.0 ppb (20) N/A N/A 4.2 μg/m3 (18) 20.0
 
Jan. 17, 2022, 1 p.m. 2.0 ppb (2) 0.7 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
 
Jan. 17, 2022, noon 1.8 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 3.9 μg/m3 (17) 25.0
 
Jan. 17, 2022, 11 a.m. 1.6 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 4.1 μg/m3 (18) 26.0
 
Jan. 17, 2022, 10 a.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 4.2 μg/m3 (18) 27.0
 
Jan. 17, 2022, 9 a.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 3.9 μg/m3 (17) 30.0
 
Jan. 17, 2022, 8 a.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 2.8 μg/m3 (12) 32.0