ID: 2918

AQSQID: 381010003

Site Name: Ryder

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

Updated: Feb. 26, 2021, 3:32 p.m.

Location: Ryder (184th St Swest), ND

Reporting: True, Located: True

Current AQI: 28.0

Ryder (184th St Swest) ND, US: 47.940861, -101.571583

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Feb. 26, 2021, 1 p.m. 6.0 ppb (6) 5.0 ppb (5) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 1.2 μg/m3 (5) 28.0
 
Feb. 26, 2021, noon 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 1.5 μg/m3 (7) 27.0
 
Feb. 26, 2021, 11 a.m. 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 1.7 μg/m3 (8) 28.0
 
Feb. 26, 2021, 10 a.m. 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 1.8 μg/m3 (8) 30.0
 
Feb. 26, 2021, 9 a.m. 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 1.8 μg/m3 (8) 31.0
 
Feb. 26, 2021, 8 a.m. 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 1.6 μg/m3 (7) 31.0
 
Feb. 26, 2021, 7 a.m. 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 1.5 μg/m3 (7) 32.0
 
Feb. 26, 2021, 6 a.m. 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 1.4 μg/m3 (6) 35.0
 
Feb. 26, 2021, 5 a.m. 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 1.4 μg/m3 (6) 34.0
 
Feb. 26, 2021, 4 a.m. 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 1.3 μg/m3 (6) 32.0
 
Feb. 26, 2021, 3 a.m. 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 1.2 μg/m3 (5) 32.0
 
Feb. 26, 2021, 2 a.m. 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 1.1 μg/m3 (5) 33.0
 
Feb. 26, 2021, 1 a.m. 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 1.1 μg/m3 (5) 34.0
 
Feb. 26, 2021, midnight 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 1.2 μg/m3 (5) 34.0
 
Feb. 25, 2021, 11 p.m. 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 1.1 μg/m3 (5) 35.0
 
Feb. 25, 2021, 10 p.m. 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 1.1 μg/m3 (5) 36.0
 
Feb. 25, 2021, 9 p.m. 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 1.1 μg/m3 (5) 37.0
 
Feb. 25, 2021, 8 p.m. 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 1.1 μg/m3 (5) 36.0
 
Feb. 25, 2021, 7 p.m. 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 1.3 μg/m3 (6) 34.0
 
Feb. 25, 2021, 6 p.m. 5.0 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 1.8 μg/m3 (8) 32.0
 
Feb. 25, 2021, 5 p.m. 5.0 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 2.4 μg/m3 (10) 30.0
 
Feb. 25, 2021, 4 p.m. 5.0 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 3.3 μg/m3 (14) 28.0
 
Feb. 25, 2021, 3 p.m. 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 3.9 μg/m3 (17) 26.0
 
Feb. 25, 2021, 2 p.m. 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 4.2 μg/m3 (18) 26.0
 
Feb. 25, 2021, 1 p.m. 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 4.1 μg/m3 (18) 26.0
 
Feb. 25, 2021, noon 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 4.2 μg/m3 (18) 27.0
 
Feb. 25, 2021, 11 a.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 4.3 μg/m3 (18) 27.0
 
Feb. 25, 2021, 10 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 4.6 μg/m3 (20) 26.0
 
Feb. 25, 2021, 9 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 5.1 μg/m3 (22) 25.0
 
Feb. 25, 2021, 8 a.m. 6.0 ppb (6) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
Feb. 25, 2021, 7 a.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 5.1 μg/m3 (22) 25.0
 
Feb. 25, 2021, 6 a.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 5.5 μg/m3 (23) 26.0
 
Feb. 25, 2021, 5 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 4.9 μg/m3 (21) 26.0
 
Feb. 25, 2021, 4 a.m. 4.0 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 4.7 μg/m3 (20) 28.0
 
Feb. 25, 2021, 3 a.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 4.4 μg/m3 (19) 29.0
 
Feb. 25, 2021, 2 a.m. 4.0 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 4.9 μg/m3 (21) 31.0
 
Feb. 25, 2021, 1 a.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
Feb. 25, 2021, midnight 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 6.1 μg/m3 (26) 31.0
 
Feb. 24, 2021, 11 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 7.5 μg/m3 (32) 33.0
 
Feb. 24, 2021, 10 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 10.4 μg/m3 (44) 44.0
 
Feb. 24, 2021, 9 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 9.9 μg/m3 (42) 42.0
 
Feb. 24, 2021, 8 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 9.1 μg/m3 (38) 38.0
 
Feb. 24, 2021, 7 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 7.1 μg/m3 (30) 30.0
 
Feb. 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 7.0 μg/m3 (30) 36.0
 
Feb. 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A N/A 33.0
 
Feb. 24, 2021, 3 p.m. 6.0 ppb (6) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 7.3 μg/m3 (31) 35.0
 
Feb. 24, 2021, 2 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 6.8 μg/m3 (29) 38.0
 
Feb. 24, 2021, 1 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 7.7 μg/m3 (33) 38.0
 
Feb. 24, 2021, noon 4.0 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 9.4 μg/m3 (40) 40.0
 
Feb. 24, 2021, 11 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 12.3 μg/m3 (52) 52.0
 
Feb. 24, 2021, 10 a.m. 6.0 ppb (6) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 14.2 μg/m3 (56) 56.0
 
Feb. 24, 2021, 9 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 14.2 μg/m3 (56) 56.0
 
Feb. 24, 2021, 8 a.m. 6.0 ppb (6) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 12.8 μg/m3 (53) 53.0
 
Feb. 24, 2021, 7 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 11.7 μg/m3 (49) 49.0
 
Feb. 24, 2021, 6 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 11.2 μg/m3 (47) 47.0
 
Feb. 24, 2021, 5 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 10.1 μg/m3 (43) 43.0
 
Feb. 24, 2021, 4 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 6.7 μg/m3 (28) 32.0
 
Feb. 24, 2021, 3 a.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 5.1 μg/m3 (22) 34.0
 
Feb. 24, 2021, 2 a.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 4.8 μg/m3 (20) 35.0
 
Feb. 24, 2021, 1 a.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 4.2 μg/m3 (18) 34.0
 
Feb. 24, 2021, midnight 4.0 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 3.2 μg/m3 (14) 36.0
 
Feb. 23, 2021, 11 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 4.1 μg/m3 (18) 35.0
 
Feb. 23, 2021, 10 p.m. 5.0 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 5.3 μg/m3 (23) 30.0
 
Feb. 23, 2021, 9 p.m. 5.0 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
Feb. 23, 2021, 8 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 3.0 μg/m3 (13) 37.0
 
Feb. 23, 2021, 7 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 2.6 μg/m3 (11) 37.0
 
Feb. 23, 2021, 6 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 1.4 μg/m3 (6) 37.0
 
Feb. 23, 2021, 5 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 3.7 μg/m3 (16) 33.0
 
Feb. 23, 2021, 4 p.m. 5.0 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 2.8 μg/m3 (12) 33.0
 
Feb. 23, 2021, 3 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 2.8 μg/m3 (12) 28.0
 
Feb. 23, 2021, 2 p.m. 5.0 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 1.4 μg/m3 (6) 28.0
 
Feb. 23, 2021, 1 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 0.6 μg/m3 (3) 35.0
 
Feb. 23, 2021, noon 4.0 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 0.7 μg/m3 (3) 36.0
 
Feb. 23, 2021, 11 a.m. 4.0 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 0.8 μg/m3 (4) 34.0
 
Feb. 23, 2021, 10 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 1.4 μg/m3 (6) 23.0
 
Feb. 23, 2021, 9 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 1.5 μg/m3 (7) 24.0
 
Feb. 23, 2021, 8 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 1.5 μg/m3 (7) 26.0
 
Feb. 23, 2021, 7 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 1.7 μg/m3 (8) 25.0
 
Feb. 23, 2021, 6 a.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 1.4 μg/m3 (6) 27.0
 
Feb. 23, 2021, 5 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
Feb. 23, 2021, 4 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 0.9 μg/m3 (4) 31.0
 
Feb. 23, 2021, 3 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 0.8 μg/m3 (4) 33.0
 
Feb. 23, 2021, 2 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 0.7 μg/m3 (3) 34.0
 
Feb. 23, 2021, 1 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 0.8 μg/m3 (4) 35.0
 
Feb. 23, 2021, midnight 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 0.7 μg/m3 (3) 37.0
 
Feb. 22, 2021, 11 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 0.9 μg/m3 (4) 38.0
 
Feb. 22, 2021, 10 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 1.1 μg/m3 (5) 38.0
 
Feb. 22, 2021, 9 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 1.3 μg/m3 (6) 38.0
 
Feb. 22, 2021, 8 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 1.3 μg/m3 (6) 38.0
 
Feb. 22, 2021, 7 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 1.3 μg/m3 (6) 33.0
 
Feb. 22, 2021, 6 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 1.5 μg/m3 (7) 32.0
 
Feb. 22, 2021, 5 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 2.4 μg/m3 (10) 30.0
 
Feb. 22, 2021, 4 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 2.4 μg/m3 (10) 30.0
 
Feb. 22, 2021, 3 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 2.8 μg/m3 (12) 30.0
 
Feb. 22, 2021, 2 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 2.5 μg/m3 (11) 29.0
 
Feb. 22, 2021, 1 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 1.8 μg/m3 (8) 29.0
 
Feb. 22, 2021, noon 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 1.1 μg/m3 (5) 29.0
 
Feb. 22, 2021, 11 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 0.9 μg/m3 (4) 28.0
 
Feb. 22, 2021, 10 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 0.9 μg/m3 (4) 28.0
 
Feb. 22, 2021, 9 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 1.0 μg/m3 (5) 27.0
 
Feb. 22, 2021, 8 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 1.1 μg/m3 (5) 28.0
 
Feb. 22, 2021, 7 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 1.2 μg/m3 (5) 28.0
 
Feb. 22, 2021, 6 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 1.0 μg/m3 (5) 29.0
 
Feb. 22, 2021, 5 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 1.2 μg/m3 (5) 28.0
 
Feb. 22, 2021, 4 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 1.3 μg/m3 (6) 28.0
 
Feb. 22, 2021, 3 a.m. 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 1.8 μg/m3 (8) 28.0
 
Feb. 22, 2021, 2 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 2.0 μg/m3 (9) 28.0
 
Feb. 22, 2021, 1 a.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 2.4 μg/m3 (10) 28.0
 
Feb. 22, 2021, midnight 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 2.0 μg/m3 (9) 29.0
 
Feb. 21, 2021, 11 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 1.9 μg/m3 (8) 34.0
 
Feb. 21, 2021, 10 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 2.1 μg/m3 (9) 35.0
 
Feb. 21, 2021, 9 p.m. 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 1.9 μg/m3 (8) 35.0
 
Feb. 21, 2021, 8 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 1.8 μg/m3 (8) 34.0
 
Feb. 21, 2021, 7 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 1.4 μg/m3 (6) 33.0
 
Feb. 21, 2021, 6 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 1.5 μg/m3 (7) 32.0
 
Feb. 21, 2021, 5 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 1.2 μg/m3 (5) 32.0
 
Feb. 21, 2021, 4 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
Feb. 21, 2021, 3 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 0.8 μg/m3 (4) 29.0
 
Feb. 21, 2021, 2 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 0.9 μg/m3 (4) 27.0
 
Feb. 21, 2021, 1 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 1.0 μg/m3 (5) 25.0
 
Feb. 21, 2021, noon 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 1.0 μg/m3 (5) 25.0
 
Feb. 21, 2021, 11 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 0.9 μg/m3 (4) 26.0
 
Feb. 21, 2021, 10 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 1.3 μg/m3 (6) 25.0
 
Feb. 21, 2021, 9 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
Feb. 21, 2021, 8 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 2.2 μg/m3 (10) 25.0
 
Feb. 21, 2021, 7 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 2.0 μg/m3 (9) 26.0
 
Feb. 21, 2021, 6 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 2.1 μg/m3 (9) 26.0
 
Feb. 21, 2021, 5 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 2.6 μg/m3 (11) 26.0
 
Feb. 21, 2021, 4 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 3.3 μg/m3 (14) 27.0
 
Feb. 21, 2021, 3 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 3.9 μg/m3 (17) 26.0
 
Feb. 21, 2021, 2 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 3.9 μg/m3 (17) 29.0
 
Feb. 21, 2021, 1 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 3.8 μg/m3 (16) 31.0
 
Feb. 21, 2021, midnight 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 4.6 μg/m3 (20) 34.0
 
Feb. 20, 2021, 11 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 3.3 μg/m3 (14) 34.0
 
Feb. 20, 2021, 10 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 3.6 μg/m3 (16) 37.0
 
Feb. 20, 2021, 9 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 4.2 μg/m3 (18) 37.0
 
Feb. 20, 2021, 8 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 3.8 μg/m3 (16) 34.0
 
Feb. 20, 2021, 7 p.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 34.0 ppb (32) N/A N/A 3.9 μg/m3 (17) 32.0
 
Feb. 20, 2021, 6 p.m. 7.0 ppb (7) 3.0 ppb (3) N/A 4.0 ppb (4) N/A 3.0 ppb (5) 32.0 ppb (30) N/A N/A 3.7 μg/m3 (16) 30.0
 
Feb. 20, 2021, 5 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 3.3 μg/m3 (14) 29.0
 
Feb. 20, 2021, 4 p.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 3.7 μg/m3 (16) 28.0
 
Feb. 20, 2021, 3 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
Feb. 20, 2021, 2 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 4.6 μg/m3 (20) 25.0
 
Feb. 20, 2021, 1 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 3.9 μg/m3 (17) 25.0
 
Feb. 20, 2021, noon 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 3.5 μg/m3 (15) 27.0
 
Feb. 20, 2021, 11 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 3.6 μg/m3 (16) 26.0
 
Feb. 20, 2021, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 3.9 μg/m3 (17) 27.0
 
Feb. 20, 2021, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 4.3 μg/m3 (18) 26.0
 
Feb. 20, 2021, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 4.7 μg/m3 (20) 25.0
 
Feb. 20, 2021, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 4.7 μg/m3 (20) 26.0
 
Feb. 20, 2021, 6 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 4.8 μg/m3 (20) 27.0
 
Feb. 20, 2021, 5 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 5.5 μg/m3 (23) 28.0
 
Feb. 20, 2021, 4 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 6.5 μg/m3 (28) 29.0
 
Feb. 20, 2021, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 7.5 μg/m3 (32) 32.0
 
Feb. 20, 2021, 2 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 9.1 μg/m3 (38) 38.0
 
Feb. 20, 2021, 1 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 20, 2021, midnight 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 9.8 μg/m3 (41) 41.0
 
Feb. 19, 2021, 11 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 9.6 μg/m3 (40) 40.0
 
Feb. 19, 2021, 10 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 9.2 μg/m3 (39) 39.0
 
Feb. 19, 2021, 9 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 8.5 μg/m3 (36) 38.0
 
Feb. 19, 2021, 8 p.m. 7.0 ppb (7) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 5.0 ppb (8) 38.0 ppb (36) N/A N/A 8.7 μg/m3 (37) 37.0
 
Feb. 19, 2021, 7 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 10.3 μg/m3 (43) 43.0
 
Feb. 19, 2021, 6 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 14.1 μg/m3 (56) 56.0
 
Feb. 19, 2021, 5 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 13.4 μg/m3 (54) 54.0
 
Feb. 19, 2021, 4 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 19, 2021, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 9.1 μg/m3 (38) 38.0
 
Feb. 19, 2021, 2 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 8.2 μg/m3 (35) 35.0