ID: 69

AQSQID: 010730023

Site Name: No. Bham

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

Updated: April 21, 2021, 7:45 p.m.

Location: Birmingham (N Birmingham), AL

Reporting: True, Located: True

Current AQI: 42.0

Birmingham (N Birmingham) AL, US: 33.5531, -86.815

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 23.0 μg/m3 (22) N/A 42.0
 
April 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 17.6 μg/m3 (17) N/A 38.0
 
April 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 12.3 μg/m3 (12) N/A 34.0
 
April 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 11.8 μg/m3 (11) N/A 33.0
 
April 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 12.0 μg/m3 (12) N/A 33.0
 
April 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 10.3 μg/m3 (10) N/A 36.0
 
April 21, 2021, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 10.6 μg/m3 (10) N/A 33.0
 
April 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 14.8 μg/m3 (14) N/A 27.0
 
April 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 16.6 μg/m3 (16) N/A 26.0
 
April 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 25.5 μg/m3 (24) N/A 25.0
 
April 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 27.7 μg/m3 (26) N/A 26.0
 
April 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 29.0 μg/m3 (27) N/A 28.0
 
April 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 35.3 μg/m3 (33) N/A 33.0
 
April 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 32.0 μg/m3 (30) N/A 30.0
 
April 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 28.9 μg/m3 (27) N/A 27.0
 
April 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 21.8 μg/m3 (21) N/A 21.0
 
April 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 24.6 μg/m3 (23) N/A 29.0
 
April 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 18.4 μg/m3 (18) N/A 41.0
 
April 21, 2021, midnight N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 18.0 μg/m3 (17) N/A 45.0
 
April 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 17.0 μg/m3 (16) N/A 50.0
 
April 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A 19.3 μg/m3 (18) N/A 68.0
 
April 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A 20.4 μg/m3 (19) N/A 81.0
 
April 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A 20.6 μg/m3 (20) N/A 74.0
 
April 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A 22.7 μg/m3 (22) N/A 65.0
 
April 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A 20.8 μg/m3 (20) N/A 68.0
 
April 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A 21.1 μg/m3 (20) N/A 61.0
 
April 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 28.6 μg/m3 (27) N/A 50.0
 
April 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 19.5 μg/m3 (19) N/A 46.0
 
April 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 45.9 μg/m3 (43) N/A 43.0
 
April 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 67.5 μg/m3 (58) N/A 58.0
 
April 20, 2021, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 74.4 μg/m3 (61) N/A 61.0
 
April 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 96.5 μg/m3 (72) N/A 72.0
 
April 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 65.7 μg/m3 (57) N/A 57.0
 
April 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 60.5 μg/m3 (54) N/A 54.0
 
April 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 51.8 μg/m3 (48) N/A 48.0
 
April 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 49.6 μg/m3 (46) N/A 46.0
 
April 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 43.0 μg/m3 (40) N/A 40.0
 
April 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 39.8 μg/m3 (37) N/A 37.0
 
April 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 30.2 μg/m3 (28) N/A 28.0
 
April 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 35.1 μg/m3 (33) N/A 33.0
 
April 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 24.6 μg/m3 (23) N/A 23.0
 
April 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 16.6 μg/m3 (16) N/A 28.0
 
April 20, 2021, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 14.4 μg/m3 (14) N/A 35.0
 
April 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 12.7 μg/m3 (12) N/A 44.0
 
April 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 11.1 μg/m3 (11) N/A 46.0
 
April 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 14.4 μg/m3 (14) N/A 45.0
 
April 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 14.0 μg/m3 (13) N/A 44.0
 
April 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 16.1 μg/m3 (15) N/A 43.0
 
April 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 16.1 μg/m3 (15) N/A 42.0
 
April 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 16.9 μg/m3 (16) N/A 41.0
 
April 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 17.2 μg/m3 (16) N/A 39.0
 
April 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 18.7 μg/m3 (18) N/A 37.0
 
April 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A N/A 29.0
 
April 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) N/A 23.0
 
April 19, 2021, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 19.7 μg/m3 (19) N/A 19.0
 
April 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 15.9 μg/m3 (15) N/A 16.0
 
April 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 15.9 μg/m3 (15) N/A 18.0
 
April 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 13.6 μg/m3 (13) N/A 22.0
 
April 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 13.7 μg/m3 (13) N/A 25.0
 
April 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 12.7 μg/m3 (12) N/A 25.0
 
April 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 13.6 μg/m3 (13) N/A 25.0
 
April 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 13.5 μg/m3 (13) N/A 27.0
 
April 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 13.6 μg/m3 (13) N/A 26.0
 
April 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 15.2 μg/m3 (15) N/A 28.0
 
April 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 15.1 μg/m3 (14) N/A 30.0
 
April 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 14.3 μg/m3 (14) N/A 33.0
 
April 19, 2021, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 14.3 μg/m3 (14) N/A 34.0
 
April 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 13.8 μg/m3 (13) N/A 40.0
 
April 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 14.6 μg/m3 (14) N/A 42.0
 
April 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 14.9 μg/m3 (14) N/A 44.0
 
April 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 16.4 μg/m3 (16) N/A 44.0
 
April 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 17.8 μg/m3 (17) N/A 46.0
 
April 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 17.3 μg/m3 (17) N/A 44.0
 
April 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 16.6 μg/m3 (16) N/A 43.0
 
April 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 16.8 μg/m3 (16) N/A 44.0
 
April 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 22.6 μg/m3 (21) N/A 41.0
 
April 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 25.5 μg/m3 (24) N/A 33.0
 
April 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 20.2 μg/m3 (19) N/A 28.0
 
April 18, 2021, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 18.1 μg/m3 (17) N/A 21.0
 
April 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 16.5 μg/m3 (16) N/A 16.0
 
April 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 17.4 μg/m3 (17) N/A 17.0
 
April 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 16.5 μg/m3 (16) N/A 21.0
 
April 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 17.2 μg/m3 (16) N/A 25.0
 
April 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 16.5 μg/m3 (16) N/A 30.0
 
April 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 16.5 μg/m3 (16) N/A 33.0
 
April 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 17.5 μg/m3 (17) N/A 35.0
 
April 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 16.8 μg/m3 (16) N/A 35.0
 
April 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 17.9 μg/m3 (17) N/A 35.0
 
April 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 17.6 μg/m3 (17) N/A 37.0
 
April 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 17.1 μg/m3 (16) N/A 39.0
 
April 18, 2021, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 14.8 μg/m3 (14) N/A 41.0
 
April 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 13.0 μg/m3 (13) N/A 44.0
 
April 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 13.2 μg/m3 (13) N/A 46.0
 
April 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 13.3 μg/m3 (13) N/A 47.0
 
April 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 12.5 μg/m3 (12) N/A 48.0
 
April 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 12.7 μg/m3 (12) N/A 46.0
 
April 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 15.9 μg/m3 (15) N/A 45.0
 
April 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 15.5 μg/m3 (15) N/A 41.0
 
April 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 15.3 μg/m3 (15) N/A 38.0
 
April 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 18.5 μg/m3 (18) N/A 35.0
 
April 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 22.7 μg/m3 (22) N/A 22.0
 
April 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 21.2 μg/m3 (20) N/A 20.0
 
April 17, 2021, noon N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 22.4 μg/m3 (21) N/A 21.0
 
April 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 23.7 μg/m3 (22) N/A 22.0
 
April 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 26.2 μg/m3 (25) N/A 25.0
 
April 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 20.5 μg/m3 (19) N/A 19.0
 
April 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 21.1 μg/m3 (20) N/A 20.0
 
April 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 22.3 μg/m3 (21) N/A 21.0
 
April 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 24.2 μg/m3 (23) N/A 23.0
 
April 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 21.3 μg/m3 (20) N/A 20.0
 
April 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 21.4 μg/m3 (20) N/A 20.0
 
April 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 17.6 μg/m3 (17) N/A 17.0
 
April 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 18.3 μg/m3 (17) N/A 17.0
 
April 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 21.8 μg/m3 (21) N/A 25.0
 
April 17, 2021, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 12.7 μg/m3 (12) N/A 31.0
 
April 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 19.7 μg/m3 (19) N/A 33.0
 
April 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 14.7 μg/m3 (14) N/A 38.0
 
April 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 15.4 μg/m3 (15) N/A 45.0
 
April 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 15.5 μg/m3 (15) N/A 47.0
 
April 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 15.1 μg/m3 (14) N/A 46.0
 
April 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 11.7 μg/m3 (11) N/A 43.0
 
April 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 14.9 μg/m3 (14) N/A 39.0
 
April 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 16.7 μg/m3 (16) N/A 36.0
 
April 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 16.5 μg/m3 (16) N/A 33.0
 
April 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 13.5 μg/m3 (13) N/A 31.0
 
April 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 18.9 μg/m3 (18) N/A 23.0
 
April 16, 2021, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 17.7 μg/m3 (17) N/A 18.0
 
April 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 15.3 μg/m3 (15) N/A 15.0
 
April 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 15.7 μg/m3 (15) N/A 27.0
 
April 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 15.6 μg/m3 (15) N/A 25.0
 
April 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 16.6 μg/m3 (16) N/A 29.0
 
April 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 14.6 μg/m3 (14) N/A 27.0
 
April 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 14.7 μg/m3 (14) N/A 29.0
 
April 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 15.9 μg/m3 (15) N/A 31.0
 
April 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 15.6 μg/m3 (15) N/A 33.0
 
April 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 16.2 μg/m3 (15) N/A 36.0
 
April 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 16.4 μg/m3 (16) N/A 38.0
 
April 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 16.6 μg/m3 (16) N/A 41.0
 
April 16, 2021, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 16.8 μg/m3 (16) N/A 40.0
 
April 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 18.2 μg/m3 (17) N/A 45.0
 
April 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 19.4 μg/m3 (18) N/A 50.0
 
April 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 22.5 μg/m3 (21) N/A 49.0
 
April 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 19.0 μg/m3 (18) N/A 50.0
 
April 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 18.9 μg/m3 (18) N/A 49.0
 
April 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 17.8 μg/m3 (17) N/A 49.0
 
April 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 16.0 μg/m3 (15) N/A 46.0
 
April 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 19.3 μg/m3 (18) N/A 40.0
 
April 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 17.0 μg/m3 (16) N/A 38.0
 
April 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 14.3 μg/m3 (14) N/A 33.0
 
April 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 15.4 μg/m3 (15) N/A 26.0
 
April 15, 2021, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 18.8 μg/m3 (18) N/A 18.0
 
April 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 20.3 μg/m3 (19) N/A 20.0
 
April 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 18.2 μg/m3 (17) N/A 26.0
 
April 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 20.1 μg/m3 (19) N/A 31.0
 
April 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 15.7 μg/m3 (15) N/A 28.0
 
April 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 12.3 μg/m3 (12) N/A 27.0
 
April 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 15.0 μg/m3 (14) N/A 26.0
 
April 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 15.9 μg/m3 (15) N/A 27.0
 
April 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 17.2 μg/m3 (16) N/A 29.0
 
April 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 18.2 μg/m3 (17) N/A 38.0
 
April 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 17.0 μg/m3 (16) N/A 39.0
 
April 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 19.7 μg/m3 (19) N/A 38.0
 
April 15, 2021, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 20.5 μg/m3 (19) N/A 35.0
 
April 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 22.0 μg/m3 (21) N/A 34.0
 
April 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 25.3 μg/m3 (24) N/A 37.0
 
April 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 28.0 μg/m3 (26) N/A 38.0
 
April 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 25.6 μg/m3 (24) N/A 40.0
 
April 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 23.4 μg/m3 (22) N/A 38.0