AQSQID: 020200018

Site Name: Garden

Location: Anchorage (Airport Heights), AK

Reporting: True, Located: True

Current AQI: 4.0

Anchorage (Airport Heights) AK, US: 61.205861, -149.8246

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Feb. 26, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 4.0 μg/m3 (4) -1.0 μg/m3 (0) 4.0
 
Feb. 26, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
Feb. 26, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 12.0
 
Feb. 26, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 7.0
 
Feb. 26, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
Feb. 26, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 8.0
 
Feb. 26, 2020, midnight N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 4.0
 
Feb. 25, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A N/A 4.0
 
Feb. 25, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
Feb. 25, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 1.0 ppb (11) 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Feb. 25, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 2.0 ppb (22) 19.0 μg/m3 (17) 17.0 μg/m3 (61) 61.0
 
Feb. 25, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 2.8 ppb (31) 27.0 μg/m3 (25) 23.0 μg/m3 (73) 73.0
 
Feb. 25, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 3.6 ppb (40) 24.0 μg/m3 (22) 17.0 μg/m3 (61) 61.0
 
Feb. 25, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 3.4 ppb (38) 20.0 μg/m3 (18) 11.0 μg/m3 (46) 46.0
 
Feb. 25, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 2.1 ppb (23) 13.0 μg/m3 (12) 11.0 μg/m3 (46) 46.0
 
Feb. 25, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 1.1 ppb (12) 2.0 μg/m3 (2) 1.0 μg/m3 (4) 12.0
 
Feb. 25, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) 3.0 μg/m3 (3) 3.0 μg/m3 (12) 12.0
 
Feb. 25, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 12.0
 
Feb. 25, 2020, noon N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 4.0 μg/m3 (4) 2.0 μg/m3 (8) 8.0
 
Feb. 25, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 12.0
 
Feb. 25, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.9 ppb (10) 9.0 μg/m3 (8) 8.0 μg/m3 (33) 33.0
 
Feb. 25, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 14.0 μg/m3 (13) 14.0 μg/m3 (54) 54.0
 
Feb. 25, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 1.0 ppb (11) 16.0 μg/m3 (15) 16.0 μg/m3 (59) 59.0
 
Feb. 25, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 1.1 ppb (12) 16.0 μg/m3 (15) 20.0 μg/m3 (67) 67.0
 
Feb. 25, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 1.2 ppb (13) 17.0 μg/m3 (15) 18.0 μg/m3 (63) 63.0
 
Feb. 25, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 1.3 ppb (14) 24.0 μg/m3 (22) 23.0 μg/m3 (73) 73.0
 
Feb. 25, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 1.2 ppb (13) 19.0 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
Feb. 25, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 1.1 ppb (12) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
Feb. 25, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 17.0
 
Feb. 25, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 8.0
 
Feb. 25, 2020, midnight N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 4.0
 
Feb. 24, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 1.0 μg/m3 (1) 1.0 μg/m3 (4) 4.0
 
Feb. 24, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 2.0 μg/m3 (2) 1.0 μg/m3 (4) 4.0
 
Feb. 24, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 4.0
 
Feb. 24, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 8.0
 
Feb. 24, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 5.0 μg/m3 (5) 7.0 μg/m3 (29) 29.0
 
Feb. 24, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 1.8 ppb (20) 23.0 μg/m3 (21) 13.0 μg/m3 (52) 52.0
 
Feb. 24, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 2.2 ppb (24) 12.0 μg/m3 (11) 8.0 μg/m3 (33) 33.0
 
Feb. 24, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 2.4 ppb (27) 9.0 μg/m3 (8) 9.0 μg/m3 (38) 38.0
 
Feb. 24, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 1.0 ppb (11) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 11.0
 
Feb. 24, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 17.0
 
Feb. 24, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) 8.0 μg/m3 (7) 7.0 μg/m3 (29) 29.0
 
Feb. 24, 2020, noon N/A N/A N/A N/A N/A N/A N/A 2.7 ppb (30) 8.0 μg/m3 (7) 11.0 μg/m3 (46) 46.0
 
Feb. 24, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) 14.0 μg/m3 (13) 12.0 μg/m3 (50) 50.0
 
Feb. 24, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.9 ppb (10) 17.0 μg/m3 (15) 15.0 μg/m3 (56) 56.0
 
Feb. 24, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) 18.0 μg/m3 (16) 20.0 μg/m3 (67) 67.0
 
Feb. 24, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 1.4 ppb (16) 31.0 μg/m3 (28) 39.0 μg/m3 (109) 109.0
 
Feb. 24, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 1.4 ppb (16) 22.0 μg/m3 (20) 21.0 μg/m3 (69) 69.0
 
Feb. 24, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 1.7 ppb (19) 32.0 μg/m3 (29) 26.0 μg/m3 (80) 80.0
 
Feb. 24, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 1.5 ppb (17) 32.0 μg/m3 (29) 35.0 μg/m3 (99) 99.0
 
Feb. 24, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) 25.0 μg/m3 (23) 20.0 μg/m3 (67) 67.0
 
Feb. 24, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) 3.0 μg/m3 (3) 6.0 μg/m3 (25) 25.0
 
Feb. 24, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 2.0 μg/m3 (2) 1.0 μg/m3 (4) 4.0
 
Feb. 24, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 2.0 μg/m3 (2) -1.0 μg/m3 (0) 2.0
 
Feb. 24, 2020, midnight N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 8.0
 
Feb. 23, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 3.0 μg/m3 (3) 4.0 μg/m3 (17) 17.0
 
Feb. 23, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 4.0
 
Feb. 23, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 4.0
 
Feb. 23, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 2.0 μg/m3 (2) 1.0 μg/m3 (4) 4.0
 
Feb. 23, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 4.0
 
Feb. 23, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 5.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
Feb. 23, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 8.0
 
Feb. 23, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 2.0 μg/m3 (2) 0.0 μg/m3 (0) 2.0
 
Feb. 23, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 2.0 μg/m3 (2) -1.0 μg/m3 (0) 2.0
 
Feb. 23, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 0.0 μg/m3 (0) 0.0 μg/m3 (0) 2.0
 
Feb. 23, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 3.0 μg/m3 (3) 3.0 μg/m3 (12) 12.0
 
Feb. 23, 2020, noon N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 4.0 μg/m3 (4) 2.0 μg/m3 (8) 8.0
 
Feb. 23, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 4.0
 
Feb. 23, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 3.0 μg/m3 (3) 1.0 μg/m3 (4) 4.0
 
Feb. 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 8.0
 
Feb. 23, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 1.0 μg/m3 (1) 2.0 μg/m3 (8) 8.0
 
Feb. 23, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 3.0 μg/m3 (3) 4.0 μg/m3 (17) 17.0
 
Feb. 23, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 2.0 μg/m3 (2) 3.0 μg/m3 (12) 12.0
 
Feb. 23, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 2.0 μg/m3 (2) 1.0 μg/m3 (4) 4.0
 
Feb. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 3.0 μg/m3 (3) 0.0 μg/m3 (0) 3.0
 
Feb. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 0.0 μg/m3 (0) 2.0 μg/m3 (8) 8.0
 
Feb. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 1.0 μg/m3 (1) 3.0 μg/m3 (12) 12.0
 
Feb. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 17.0
 
Feb. 23, 2020, midnight N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 5.0 μg/m3 (21) 21.0
 
Feb. 22, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 5.0 μg/m3 (21) 21.0
 
Feb. 22, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 3.0 μg/m3 (3) 4.0 μg/m3 (17) 17.0
 
Feb. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 3.0 μg/m3 (3) 5.0 μg/m3 (21) 21.0
 
Feb. 22, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 17.0
 
Feb. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 5.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
Feb. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 2.0 μg/m3 (8) 8.0
 
Feb. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 17.0
 
Feb. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
Feb. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 5.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
Feb. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 8.0
 
Feb. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 2.0 μg/m3 (2) 2.0 μg/m3 (8) 8.0
 
Feb. 22, 2020, noon N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 17.0
 
Feb. 22, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) 6.0 μg/m3 (5) 7.0 μg/m3 (29) 29.0
 
Feb. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 1.0 ppb (11) 11.0 μg/m3 (10) 11.0 μg/m3 (46) 46.0
 
Feb. 22, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) 12.0 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
Feb. 22, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) 13.0 μg/m3 (12) 14.0 μg/m3 (54) 54.0
 
Feb. 22, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 19.0 μg/m3 (17) 17.0 μg/m3 (61) 61.0
 
Feb. 22, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) 13.0 μg/m3 (12) 8.0 μg/m3 (33) 33.0
 
Feb. 22, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 4.0 μg/m3 (4) 5.0 μg/m3 (21) 21.0
 
Feb. 22, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Feb. 22, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 1.0 ppb (11) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 11.0
 
Feb. 22, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 2.0 μg/m3 (8) 8.0
 
Feb. 22, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 1.5 ppb (17) 3.0 μg/m3 (3) 1.0 μg/m3 (4) 17.0
 
Feb. 22, 2020, midnight N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 2.0 μg/m3 (2) -1.0 μg/m3 (0) 7.0
 
Feb. 21, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 3.0 μg/m3 (3) -1.0 μg/m3 (0) 3.0
 
Feb. 21, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) -2.0 μg/m3 (0) 5.0
 
Feb. 21, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) 3.0 μg/m3 (3) -2.0 μg/m3 (0) 9.0
 
Feb. 21, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) 1.0 μg/m3 (1) -1.0 μg/m3 (0) 6.0
 
Feb. 21, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 1.0 μg/m3 (1) -1.0 μg/m3 (0) 3.0
 
Feb. 21, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.9 ppb (10) 3.0 μg/m3 (3) 4.0 μg/m3 (17) 17.0
 
Feb. 21, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 1.1 ppb (12) 4.0 μg/m3 (4) 6.0 μg/m3 (25) 25.0
 
Feb. 21, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Feb. 21, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.9 ppb (10) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 17.0
 
Feb. 21, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 1.0 μg/m3 (1) 3.0 μg/m3 (12) 12.0
 
Feb. 21, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 2.0 μg/m3 (2) 2.0 μg/m3 (8) 8.0
 
Feb. 21, 2020, noon N/A N/A N/A N/A N/A N/A N/A 3.2 ppb (36) 3.0 μg/m3 (3) 4.0 μg/m3 (17) 36.0
 
Feb. 21, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.9 ppb (10) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Feb. 21, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 12.0
 
Feb. 21, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
Feb. 21, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 17.0
 
Feb. 21, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 21.0 μg/m3 (19) 18.0 μg/m3 (63) 63.0
 
Feb. 21, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Feb. 21, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 5.0 μg/m3 (5) 5.0 μg/m3 (21) 21.0
 
Feb. 21, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Feb. 21, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
Feb. 21, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 4.0 μg/m3 (4) -1.0 μg/m3 (0) 4.0
 
Feb. 21, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 8.0
 
Feb. 21, 2020, midnight N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 17.0
 
Feb. 20, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 4.0
 
Feb. 20, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 3.0 μg/m3 (3) 1.0 μg/m3 (4) 4.0
 
Feb. 20, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 2.0 μg/m3 (2) 3.0 μg/m3 (12) 12.0
 
Feb. 20, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 8.0
 
Feb. 20, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 5.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
Feb. 20, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 5.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
Feb. 20, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) 2.0 μg/m3 (2) 1.0 μg/m3 (4) 8.0
 
Feb. 20, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 1.0 μg/m3 (1) 0.0 μg/m3 (0) 2.0
 
Feb. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) 1.0 μg/m3 (1) -2.0 μg/m3 (0) 6.0
 
Feb. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 2.0 μg/m3 (2) -1.0 μg/m3 (0) 3.0
 
Feb. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 4.0
 
Feb. 20, 2020, noon N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 4.0 μg/m3 (4) 2.0 μg/m3 (8) 8.0
 
Feb. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 2.0 μg/m3 (2) 3.0 μg/m3 (12) 12.0
 
Feb. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 3.0 μg/m3 (3) 5.0 μg/m3 (21) 21.0
 
Feb. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 4.0 μg/m3 (4) 7.0 μg/m3 (29) 29.0
 
Feb. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 12.0
 
Feb. 20, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 3.0 μg/m3 (3) 4.0 μg/m3 (17) 17.0
 
Feb. 20, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 1.0 μg/m3 (1) 3.0 μg/m3 (12) 12.0
 
Feb. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 2.0 μg/m3 (2) 2.0 μg/m3 (8) 8.0
 
Feb. 20, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 3.0 μg/m3 (3) 1.0 μg/m3 (4) 4.0
 
Feb. 20, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 2.0 μg/m3 (2) 1.0 μg/m3 (4) 4.0
 
Feb. 20, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 1.0 μg/m3 (1) 1.0 μg/m3 (4) 4.0
 
Feb. 20, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 0.0 μg/m3 (0) 0.0 μg/m3 (0) 7.0
 
Feb. 20, 2020, midnight N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) 2.0 μg/m3 (2) 0.0 μg/m3 (0) 9.0
 
Feb. 19, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 2.0 μg/m3 (2) 2.0 μg/m3 (8) 8.0
 
Feb. 19, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 12.0
 
Feb. 19, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 1.3 ppb (14) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 14.0
 
Feb. 19, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 7.0
 
Feb. 19, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 7.0
 
Feb. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) 3.0 μg/m3 (3) 1.0 μg/m3 (4) 8.0
 
Feb. 19, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) -2.0 μg/m3 (0) 2.0 μg/m3 (8) 8.0
 
Feb. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 1.5 ppb (17) 2.0 μg/m3 (2) 2.0 μg/m3 (8) 17.0
 
Feb. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 1.2 ppb (13) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 13.0
 
Feb. 19, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) 1.0 μg/m3 (1) 2.0 μg/m3 (8) 8.0
 
Feb. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) -2.0 μg/m3 (0) 3.0 μg/m3 (12) 12.0
 
Feb. 19, 2020, noon N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) -2.0 μg/m3 (0) 1.0 μg/m3 (4) 4.0
 
Feb. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 0.0 μg/m3 (0) 2.0 μg/m3 (8) 8.0
 
Feb. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 1.0 μg/m3 (1) 3.0 μg/m3 (12) 12.0
 
Feb. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 2.0 μg/m3 (2) -1.0 μg/m3 (0) 2.0
 
Feb. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) 1.0 μg/m3 (1) 1.0 μg/m3 (4) 4.0
 
Feb. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 0.0 μg/m3 (0) 2.0 μg/m3 (8) 8.0