AQSQID: 530530024

Site Name: Tacoma-S 36th St

Location: Tacoma (S End), WA

Reporting: True, Located: True

Current AQI: 23.0

Tacoma (S End) WA, US: 47.22634, -122.46256

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 30, 2020, 2 p.m. 25.3 ppb (23) 9.5 ppb (9) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 23.0
 
March 30, 2020, 1 p.m. 19.3 ppb (18) 8.1 ppb (8) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 18.0
 
March 30, 2020, noon 11.1 ppb (10) 5.4 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 10.0
 
March 30, 2020, 11 a.m. 10.4 ppb (10) 4.3 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 10.0
 
March 30, 2020, 10 a.m. 6.8 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A -2.0 μg/m3 (0) 6.0
 
March 30, 2020, 9 a.m. 2.1 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 2.0
 
March 30, 2020, 8 a.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 30, 2020, 7 a.m. 2.4 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 30, 2020, 6 a.m. 2.5 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 2.0
 
March 30, 2020, 5 a.m. 3.3 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 30, 2020, 4 a.m. 5.5 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 30, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 30, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 30, 2020, 1 a.m. 10.6 ppb (10) 4.1 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 10.0
 
March 30, 2020, midnight 10.1 ppb (9) 4.7 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 9.0
 
March 29, 2020, 11 p.m. 10.7 ppb (10) 5.3 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A -4.0 μg/m3 (0) 10.0
 
March 29, 2020, 10 p.m. 9.9 ppb (9) 5.6 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A -4.0 μg/m3 (0) 9.0
 
March 29, 2020, 9 p.m. 8.7 ppb (8) 5.0 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A -2.0 μg/m3 (0) 8.0
 
March 29, 2020, 8 p.m. 8.3 ppb (8) 4.9 ppb (5) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 8.0
 
March 29, 2020, 7 p.m. 8.3 ppb (8) 4.5 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 29, 2020, 6 p.m. 9.2 ppb (9) 5.0 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
March 29, 2020, 5 p.m. 8.0 ppb (7) 3.7 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 29, 2020, 4 p.m. 10.7 ppb (10) 3.8 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 10.0
 
March 29, 2020, 3 p.m. 8.4 ppb (8) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 29, 2020, 2 p.m. 7.0 ppb (6) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 29, 2020, 1 p.m. 6.6 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 29, 2020, noon 4.4 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A -4.0 μg/m3 (0) 4.0
 
March 29, 2020, 11 a.m. 5.9 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A -3.0 μg/m3 (0) 5.0
 
March 29, 2020, 10 a.m. 2.4 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 2.0
 
March 29, 2020, 9 a.m. 3.3 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 3.0
 
March 29, 2020, 8 a.m. 5.8 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 5.0
 
March 29, 2020, 7 a.m. 5.5 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 29, 2020, 6 a.m. 6.8 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 29, 2020, 5 a.m. 8.5 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 29, 2020, 4 a.m. 9.7 ppb (9) 2.1 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 29, 2020, 3 a.m. 9.6 ppb (9) 2.1 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 9.0
 
March 29, 2020, 2 a.m. 10.3 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 10.0
 
March 29, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 29, 2020, midnight 8.6 ppb (8) 3.5 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 28, 2020, 11 p.m. 9.5 ppb (9) 3.5 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 9.0
 
March 28, 2020, 10 p.m. 8.8 ppb (8) 3.5 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 8.0
 
March 28, 2020, 9 p.m. 8.7 ppb (8) 3.6 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 28, 2020, 8 p.m. 10.1 ppb (9) 3.6 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 9.0
 
March 28, 2020, 7 p.m. 12.9 ppb (12) 4.5 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 12.0
 
March 28, 2020, 6 p.m. 16.4 ppb (15) 5.7 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 15.0
 
March 28, 2020, 5 p.m. 17.6 ppb (16) 5.8 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 16.0
 
March 28, 2020, 4 p.m. 15.9 ppb (15) 5.5 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 15.0
 
March 28, 2020, 3 p.m. 17.3 ppb (16) 6.3 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 16.0
 
March 28, 2020, 2 p.m. 14.4 ppb (13) 4.2 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 13.0
 
March 28, 2020, 1 p.m. 11.4 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 11.0
 
March 28, 2020, noon 16.0 ppb (15) 4.1 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 15.0
 
March 28, 2020, 11 a.m. 16.4 ppb (15) 4.6 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 15.0
 
March 28, 2020, 10 a.m. 9.5 ppb (9) 2.3 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 9.0
 
March 28, 2020, 9 a.m. 7.5 ppb (7) 2.2 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 8 a.m. 5.7 ppb (5) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
March 28, 2020, 7 a.m. 9.3 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 9.0
 
March 28, 2020, 6 a.m. 12.0 ppb (11) 2.3 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 11.0
 
March 28, 2020, 5 a.m. 15.0 ppb (14) 3.9 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 14.0
 
March 28, 2020, 4 a.m. 14.3 ppb (13) 3.4 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 13.0
 
March 28, 2020, 3 a.m. 14.7 ppb (14) 3.7 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 14.0
 
March 28, 2020, 2 a.m. 18.7 ppb (17) 5.4 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 17.0
 
March 28, 2020, 1 a.m. 17.7 ppb (16) 7.0 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 16.0
 
March 28, 2020, midnight 18.9 ppb (18) 6.8 ppb (6) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 18.0
 
March 27, 2020, 11 p.m. 22.8 ppb (21) 9.5 ppb (9) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 21.0
 
March 27, 2020, 10 p.m. 25.6 ppb (24) 10.5 ppb (10) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
March 27, 2020, 9 p.m. 27.7 ppb (26) 11.6 ppb (11) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 26.0
 
March 27, 2020, 8 p.m. 19.6 ppb (18) 7.6 ppb (7) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 18.0
 
March 27, 2020, 6 p.m. 24.9 ppb (23) 11.7 ppb (11) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 5 p.m. 33.7 ppb (31) 16.3 ppb (15) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 4 p.m. 44.5 ppb (41) 21.9 ppb (20) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 41.0
 
March 27, 2020, 3 p.m. 55.8 ppb (52) 27.6 ppb (26) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 52.0
 
March 27, 2020, 2 p.m. 55.4 ppb (51) 28.7 ppb (27) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 51.0
 
March 27, 2020, 1 p.m. 41.5 ppb (38) 18.5 ppb (17) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
March 27, 2020, noon 52.5 ppb (49) 23.8 ppb (22) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 49.0
 
March 27, 2020, 11 a.m. 32.7 ppb (30) 12.6 ppb (12) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 30.0
 
March 27, 2020, 10 a.m. 19.1 ppb (18) 4.9 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 9 a.m. 14.8 ppb (14) 2.9 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
March 27, 2020, 8 a.m. 11.2 ppb (10) 1.4 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 7 a.m. 13.2 ppb (12) 2.1 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
March 27, 2020, 6 a.m. 12.6 ppb (12) 2.5 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
March 27, 2020, 5 a.m. 15.5 ppb (14) 3.1 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 27, 2020, 4 a.m. 13.1 ppb (12) 2.8 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 3 a.m. 13.6 ppb (13) 4.1 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
March 27, 2020, 2 a.m. 17.3 ppb (16) 5.8 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
March 27, 2020, 1 a.m. 17.1 ppb (16) 7.2 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, midnight 20.1 ppb (19) 8.4 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 26, 2020, 11 p.m. 23.9 ppb (22) 10.6 ppb (10) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
March 26, 2020, 10 p.m. 24.0 ppb (22) 11.8 ppb (11) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 26, 2020, 9 p.m. 24.4 ppb (23) 12.3 ppb (11) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
March 26, 2020, 8 p.m. 22.5 ppb (21) 11.2 ppb (10) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 26, 2020, 7 p.m. 20.5 ppb (19) 10.5 ppb (10) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 19.0
 
March 26, 2020, 6 p.m. 27.6 ppb (26) 13.9 ppb (13) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 26.0
 
March 26, 2020, 5 p.m. 24.4 ppb (23) 12.6 ppb (12) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 26, 2020, 4 p.m. 30.5 ppb (28) 16.4 ppb (15) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 28.0
 
March 26, 2020, 3 p.m. 41.6 ppb (39) 23.8 ppb (22) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 39.0
 
March 26, 2020, 2 p.m. 50.4 ppb (47) 30.8 ppb (29) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 47.0
 
March 26, 2020, 1 p.m. 54.3 ppb (50) 31.9 ppb (30) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 50.0
 
March 26, 2020, noon 40.5 ppb (38) 20.8 ppb (19) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 38.0
 
March 26, 2020, 11 a.m. 27.1 ppb (25) 11.9 ppb (11) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 25.0
 
March 26, 2020, 10 a.m. 19.8 ppb (18) 5.1 ppb (5) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 18.0
 
March 26, 2020, 9 a.m. 17.7 ppb (16) 5.6 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 16.0
 
March 26, 2020, 8 a.m. 13.5 ppb (12) 3.6 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 12.0
 
March 26, 2020, 7 a.m. 15.4 ppb (14) 4.2 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 14.0
 
March 26, 2020, 6 a.m. 13.4 ppb (12) 3.2 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 12.0
 
March 26, 2020, 5 a.m. 16.4 ppb (15) 2.7 ppb (3) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 15.0
 
March 26, 2020, 4 a.m. 19.4 ppb (18) 5.6 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 18.0
 
March 26, 2020, 3 a.m. 20.2 ppb (19) 6.8 ppb (6) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 19.0
 
March 26, 2020, 2 a.m. 15.7 ppb (15) 5.0 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 26, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 26, 2020, midnight 15.7 ppb (15) 5.9 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 25, 2020, 11 p.m. 14.4 ppb (13) 6.9 ppb (6) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 13.0
 
March 25, 2020, 10 p.m. 13.8 ppb (13) 6.3 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 13.0
 
March 25, 2020, 9 p.m. 25.5 ppb (24) 13.2 ppb (12) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 24.0
 
March 25, 2020, 8 p.m. 17.8 ppb (16) 8.4 ppb (8) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 25, 2020, 7 p.m. 44.7 ppb (41) 26.4 ppb (24) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 41.0
 
March 25, 2020, 6 p.m. 44.3 ppb (41) 25.6 ppb (24) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 41.0
 
March 25, 2020, 5 p.m. 52.0 ppb (48) 28.1 ppb (26) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 48.0
 
March 25, 2020, 4 p.m. 49.5 ppb (46) 25.1 ppb (23) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 46.0
 
March 25, 2020, 3 p.m. 56.8 ppb (53) 29.3 ppb (27) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 53.0
 
March 25, 2020, 2 p.m. 51.9 ppb (48) 26.8 ppb (25) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 48.0
 
March 25, 2020, 1 p.m. 49.4 ppb (46) 24.8 ppb (23) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A -2.0 μg/m3 (0) 46.0
 
March 25, 2020, noon 10.2 ppb (9) 0.1 ppb (0) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A -2.0 μg/m3 (0) 9.0
 
March 25, 2020, 11 a.m. 26.5 ppb (25) 10.5 ppb (10) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 25.0
 
March 25, 2020, 10 a.m. 19.6 ppb (18) 7.8 ppb (7) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 18.0
 
March 25, 2020, 9 a.m. 9.9 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 9.0
 
March 25, 2020, 8 a.m. 10.2 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 25, 2020, 7 a.m. 13.7 ppb (13) 1.2 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 25, 2020, 6 a.m. 18.9 ppb (18) 4.3 ppb (4) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 25, 2020, 5 a.m. 10.3 ppb (10) 1.7 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 25, 2020, 4 a.m. 4.5 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 25, 2020, 3 a.m. 16.1 ppb (15) 3.7 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 25, 2020, 2 a.m. 7.8 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 7.0
 
March 25, 2020, 1 a.m. 15.7 ppb (15) 3.8 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 15.0
 
March 25, 2020, midnight 22.4 ppb (21) 9.0 ppb (8) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 21.0
 
March 24, 2020, 11 p.m. 30.9 ppb (29) 18.5 ppb (17) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 29.0
 
March 24, 2020, 10 p.m. 29.8 ppb (28) 17.4 ppb (16) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 28.0
 
March 24, 2020, 9 p.m. 41.1 ppb (38) 24.4 ppb (23) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 38.0
 
March 24, 2020, 8 p.m. 26.0 ppb (24) 14.4 ppb (13) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 24.0
 
March 24, 2020, 7 p.m. 36.0 ppb (33) 21.3 ppb (20) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 33.0
 
March 24, 2020, 6 p.m. 32.7 ppb (30) 18.1 ppb (17) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 30.0
 
March 24, 2020, 5 p.m. 37.2 ppb (34) 20.3 ppb (19) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 34.0
 
March 24, 2020, 4 p.m. 48.6 ppb (45) 26.7 ppb (25) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 45.0
 
March 24, 2020, 3 p.m. 61.1 ppb (58) 36.9 ppb (34) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 58.0
 
March 24, 2020, 2 p.m. 70.3 ppb (67) 44.0 ppb (41) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 67.0
 
March 24, 2020, 1 p.m. 62.0 ppb (59) 35.6 ppb (33) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 59.0
 
March 24, 2020, noon 20.5 ppb (19) 7.3 ppb (7) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 19.0
 
March 24, 2020, 11 a.m. 15.3 ppb (14) 2.3 ppb (2) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 24, 2020, 10 a.m. 22.3 ppb (21) 6.6 ppb (6) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 21.0
 
March 24, 2020, 9 a.m. 9.9 ppb (9) 2.1 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 9.0
 
March 24, 2020, 8 a.m. 10.0 ppb (9) 1.6 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 9.0
 
March 24, 2020, 7 a.m. 9.5 ppb (9) 2.6 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 9.0
 
March 24, 2020, 6 a.m. 15.6 ppb (14) 4.4 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 14.0
 
March 24, 2020, 5 a.m. 15.4 ppb (14) 3.8 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 14.0
 
March 24, 2020, 4 a.m. 14.8 ppb (14) 3.2 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 14.0
 
March 24, 2020, 3 a.m. 19.0 ppb (18) 4.9 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 18.0
 
March 24, 2020, 2 a.m. 18.7 ppb (17) 7.5 ppb (7) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 17.0
 
March 24, 2020, 1 a.m. 22.5 ppb (21) 8.2 ppb (8) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 21.0
 
March 24, 2020, midnight 22.8 ppb (21) 11.8 ppb (11) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 21.0
 
March 23, 2020, 11 p.m. 26.1 ppb (24) 14.2 ppb (13) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 24.0
 
March 23, 2020, 10 p.m. 28.6 ppb (26) 16.5 ppb (15) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 26.0
 
March 23, 2020, 9 p.m. 22.4 ppb (21) 11.7 ppb (11) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 21.0
 
March 23, 2020, 8 p.m. 29.9 ppb (28) 16.0 ppb (15) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 28.0
 
March 23, 2020, 7 p.m. 22.0 ppb (20) 11.7 ppb (11) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 20.0
 
March 23, 2020, 6 p.m. 33.2 ppb (31) 18.4 ppb (17) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 31.0
 
March 23, 2020, 5 p.m. 27.2 ppb (25) 13.9 ppb (13) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 25.0
 
March 23, 2020, 4 p.m. 32.1 ppb (30) 16.9 ppb (16) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 30.0
 
March 23, 2020, 3 p.m. 29.3 ppb (27) 14.9 ppb (14) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 27.0
 
March 23, 2020, 2 p.m. 31.6 ppb (29) 15.5 ppb (14) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 29.0